Port flushing pipe needle for intravenous infusion

Abstract

The utility model relates to the technical field of medical instruments, in particular to an intravenous infusion port flushing pipe needle which comprises a driver, the whole driver is cylindrical, a cylindrical cavity is coaxially formed in the driver, a hose communicated with the cavity is arranged on the side face of the driver, an outer sleeve is fixed to the bottom end of the driver and communicated with the cavity, and the outer sleeve is connected with the driver. A needle tube is coaxially inserted in the outer sleeve, the top end of the needle tube extends into the cavity, the bottom end of the needle tube extends out of the outer sleeve, a rotor is coaxially and fixedly installed at the top end of the needle tube, the top end of the needle tube penetrates through the rotor, a plugging block is fixed to the bottom end of the outer sleeve, and a side hole is formed in the needle tube between the plugging block and the outer sleeve in a penetrating mode. According to the utility model, the rotor is driven to drive the needle tube to rotate automatically by utilizing the impact force of the flushing fluid injected by the injector, and the inside of the infusion port can be flushed in all directions by matching with the side hole formed in the needle tube.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a flushing needle for a venous infusion port. Background Art

[0002] During the long-term use of the intravenous infusion port, since the port seat and the catheter are completely buried under the skin and cannot be directly observed, some complications will occur. One of the most common complications is catheter blockage. Once it occurs, the common manifestations are no blood return during aspiration or increased resistance to injection, and the infusion cannot be smoothly or cannot be infused, which will affect the patient's treatment progress and cause economic losses and reduced quality of life. The infusion port is different from other liquid infusion devices. It is composed of a port seat and a catheter. The space inside the port seat is large, which can easily lead to a slow flow rate of liquid. Long-term infusion of plasma, nutrient solution, fat emulsion, and drug-drug interaction lead to the formation of various precipitates, which are the main causes of catheter blockage. The conventional prevention method is to strictly standardize the operation and correctly flush the tube. The therapeutic effect of the flushing and sealing operation will vary due to different operating techniques and strengths of different people. In order to reduce the blockage rate of the infusion port, medical staff will use the "rotating pulse flushing method" to flush the intravenous infusion port during maintenance. However, this method requires professional training and repeated practice to master, and it is easy for the infusion port to be blocked due to different flushing techniques. Therefore, it is very necessary to invent a port needle that can effectively flush in all directions without manual rotation of the port needle to prevent infusion port blockage. Utility Model Content

[0003] The utility model aims to solve the defect that the port needle needs to be rotated manually in the process of flushing and sealing the tube in the prior art, and proposes a venous infusion port flushing needle.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A intravenous infusion port flushing needle is designed, including a driver, which is cylindrical as a whole, and has a cylindrical cavity coaxially opened inside the driver. A hose connected to the cavity is arranged on the side of the driver, and an outer sleeve is fixed to the bottom end of the driver, and the outer sleeve is connected to the cavity. A needle tube is coaxially inserted into the outer sleeve, and the top end of the needle tube extends into the cavity, and the bottom end of the needle tube extends out of the outer sleeve. A rotor is coaxially fixedly installed on the top end of the needle tube, and the top end of the needle tube passes through the rotor. A sealing block is fixed to the bottom end of the outer sleeve, and a side hole is penetrated through the needle tube between the sealing block and the outer sleeve.

[0006] Preferably, a connector is provided at one end of the hose away from the driver.

[0007] Preferably, the center line of the side hole is inclined downwardly of the needle tube.

[0008] Preferably, a guide slope corresponding to the side hole is provided on the top of the blocking block.

[0009] Preferably, the rotor is an impeller.

[0010] The utility model provides a intravenous infusion port flushing needle, which has the beneficial effect of utilizing the impact force of the flushing liquid injected by the syringe to drive the rotor to drive the needle tube to rotate automatically, and cooperate with the side hole opened on the needle tube to flush the inside of the infusion port in all directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of a venous infusion port flushing needle proposed by the utility model. Figure 1 ;

[0012] Figure 2 This is a schematic diagram of the structure of a venous infusion port flushing needle proposed by the utility model. Figure 2 ;

[0013] Figure 3 This is a schematic diagram of the internal structure of a venous infusion port flushing needle proposed by the utility model;

[0014] Figure 4 The utility model is a cross-sectional schematic diagram of a venous infusion port flushing needle.

[0015] In the figure: 1, driver; 2, hose; 3, connector; 4, outer sleeve; 5, needle tube; 6, rotor; 7, side hole; 8, blocking block. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0017] Example 1

[0018] Reference Figure 1-4, a intravenous infusion port flushing needle, including a driver 1, the driver 1 is cylindrical as a whole, a cylindrical cavity is coaxially opened inside the driver 1, a hose 2 connected to the cavity is arranged on the side of the driver 1, and a connector 3 is arranged at the end of the hose 2 away from the driver 1. When the connector 3 is in use, it is only necessary to directly insert the front end of the syringe into the connector 3, and the friction between the two is used to achieve the docking of the two. An outer sleeve 4 is fixed at the bottom end of the driver 1, and the outer sleeve 4 is connected to the cavity. A needle tube 5 is coaxially inserted in the outer sleeve 4, the top end of the needle tube 5 extends into the cavity, and the bottom end of the needle tube 5 extends out of the outer sleeve 4. A rotor 6 is coaxially fixedly installed at the top end of the needle tube 5, and the top end of the needle tube 5 passes through the rotor 6. A blocking block 8 is fixed at the bottom end of the outer sleeve 4. The blocking block 8 is wedge-shaped as a whole, and the blocking block 8 is welded and fixed to the needle tube 5, and the weld is polished and smoothed. A side hole 7 is opened on the needle tube 5 between the blocking block 8 and the outer sleeve 4. The outer sleeve 4 is used to limit the needle tube 5 so that the needle tube 5 can rotate stably. The needle tube 5 is made of stainless steel, and its diameter is preferably 1.5 mm. The rotor 6 is an impeller. The blades on the surface of the impeller can interact with the incoming flushing liquid, thereby making it easier to rotate.

[0019] When the utility model is in use, the bottom end of the needle tube 5 is inserted into the port seat, and then the syringe is connected to the hose 2 through the joint 3. Then the syringe is pushed to inject the flushing liquid in the syringe into the inner cavity of the driver 1 through the hose 2. The flushing liquid entering the inner cavity flows to the rotor 6, pushing the rotor 6 to rotate. Since the needle tube 5 is fixed to the rotor 6, the needle tube 5 will rotate in the outer sleeve 4 with the rotation of the rotor 6. Since the lower part of the needle tube 5 is provided with an oblique side hole 7, the flushing liquid will flow out from the side hole 7. During the rotation of the needle tube 5, the port seat is flushed in all directions.

[0020] Example 2

[0021] Reference Figure 4 As another preferred embodiment of the utility model, the difference from embodiment 1 is that the center line of the side hole 7 is inclined downwardly toward the needle tube 5. The downwardly inclined setting allows the liquid sprayed from the side hole 7 to directly impact the bottom and side wall of the port seat, resulting in a better flushing effect.

[0022] The top of the blocking block 8 is provided with a guide slope corresponding to the side hole 7. The guide slope can guide the liquid to the side hole 7 more smoothly, avoiding the fluid from being weakened by the blocking block 8, so that the liquid flowing out of the side hole 7 is faster and more impactful.

[0023] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A venous infusion port flushing needle, comprising a driver (1), characterized in that: The driver (1) is cylindrical in shape as a whole. A cylindrical cavity is coaxially formed inside the driver (1). A hose (2) communicating with the cavity is provided on the side of the driver (1). An outer sleeve (4) is fixed at the bottom end of the driver (1). The outer sleeve (4) is communicated with the cavity. A needle tube (5) is coaxially inserted into the outer sleeve (4). The top end of the needle tube (5) extends into the cavity. The bottom end of the needle tube (5) extends out of the outer sleeve (4). A rotor (6) is coaxially fixedly mounted at the top end of the needle tube (5). The top end of the needle tube (5) passes through the rotor (6). A blocking block (8) is fixed at the bottom end of the outer sleeve (4). A side hole (7) is formed through the needle tube (5) between the blocking block (8) and the outer sleeve (4).

2. The intravenous infusion port flushing needle according to claim 1, characterized in that: A connector (3) is provided at one end of the hose (2) away from the driver (1).

3. The intravenous infusion port flushing needle according to claim 1, characterized in that: The center line of the side hole (7) is arranged to be inclined downwardly of the needle tube (5).

4. The intravenous infusion port flushing needle according to claim 1, characterized in that: The top of the blocking block (8) is provided with a guide slope corresponding to the side hole (7).

5. The intravenous infusion port flushing needle according to claim 1, characterized in that: The rotor (6) is an impeller.

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