Convenient and practical puncture drainage needle

Abstract

The utility model relates to a convenient and practical puncture drainage needle, which comprises a puncture needle and a drainage tube, a drainage cavity channel used for being communicated with the puncture needle and a dosing cavity channel used for dosing are arranged in the drainage tube, the puncture needle is movably sleeved in the drainage cavity channel, and a dosing port communicated with the dosing cavity channel is arranged on the side wall of the front end of the drainage tube. The puncture needle comprises a needle head capable of movably shuttling inside and outside the drainage cavity channel, a needle body communicated with the needle head and a connector arranged at the rear end of the needle body, the tail end of the needle head is sleeved with a spring, the rear end of the drainage cavity channel is provided with an annular cavity provided with the spring, and the end, sleeved with the spring, of the needle body is fixedly connected with the connector; one end of the spring abuts against the lower end of the annular cavity, a limiting block used for limiting the spring is arranged at the upper end of the annular cavity, and the needle head and the needle body are both hollow. The utility model aims to solve the problem of low working efficiency caused by tedious operation procedures and unsafe operation when a doctor uses a drainage needle in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a convenient and practical puncture and drainage needle. Background Art

[0002] Abscesses, including breast abscesses, are common diseases. Conventional treatment methods in the prior art include surgically opening the abscess cavity and removing the pus or adopting minimally invasive treatment.

[0003] In the existing traditional minimally invasive treatment of breast abscess, puncture and catheter drainage are performed separately, that is, other auxiliary puncture equipment must be used to puncture the abscess cavity tissue and open a channel, and then the drainage tube is inserted into the abscess cavity with the support of the insertion rod to achieve puncture and drainage. This increases the steps and time of the operation and increases the patient's pain. Moreover, when the puncture is completed, there is no drainage tube to follow up, so the pus will be directly discharged from the body in large quantities, polluting the ward environment and increasing the occurrence of hospital-acquired infections. Utility Model Content

[0004] The purpose of the utility model is to provide a convenient and practical puncture and drainage needle to solve the problem of low work efficiency caused by cumbersome operation procedures and insufficient safety when doctors use the drainage needles in the prior art.

[0005] The utility model is realized by the following technical scheme: a convenient and practical puncture and drainage needle, comprising a puncture needle and a drainage tube, wherein the puncture needle is movably arranged in the drainage tube;

[0006] The puncture needle comprises a needle, a needle body connected with the needle, and a connector sleeved on the rear end of the needle body. A spring is sleeved on the end of the needle body. An annular cavity for accommodating the spring is provided at the rear end of the drainage tube. One end of the spring sleeved on the needle body is fixedly connected to the connector, and the other end abuts against the lower end of the annular cavity. A limit block for limiting the spring is provided at the upper end of the annular cavity. Both the needle and the needle body are hollow.

[0007] The connector includes a push rod movably arranged in the annular cavity for fixing a connecting spring, and a hollow lug arranged outside the annular cavity and connected to one end of the push rod for advancing the push rod; the hollow lug is connected to a guide tube, and the other end of the guide tube is connected to a negative pressure suction bag.

[0008] Furthermore, the drainage tube wall is also provided with a drug delivery cavity, and the outer wall is provided with a drug delivery port connected with the drug delivery cavity; and the drug delivery cavity is provided with a drug inlet at one end away from the drug delivery port.

[0009] Furthermore, a flow rate regulating valve is provided on the flow guide pipe.

[0010] Furthermore, the drug inlet is connected to a drug delivery tube, and a one-way valve is provided on the drug delivery tube.

[0011] Compared with the previous technology, the beneficial effects of the utility model are:

[0012] 1. The utility model sets the needle telescopically on the drainage cavity and connects it through a spring. During puncture, the needle can be exposed by pressing the lug to squeeze the spring. After puncture, the needle automatically retracts into the needle cover so that its tip is not exposed. Then, drainage is performed through negative pressure, which effectively avoids damage to tissues during the drainage process. It has the advantages of being easy to use and safe, and greatly reduces the occurrence of complications.

[0013] 2. The utility model is provided with a drug delivery cavity and a drug delivery port, the drug delivery cavity is connected to a drug delivery tube, a one-way valve is connected to the drug delivery tube, and injection is performed after drainage is completed. The functions of drainage and thoracic and abdominal cavity injection are integrated into one device, which is convenient to use and suitable for clinical use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the needle retraction structure of the utility model;

[0016] Figure 3 It is a cross-sectional view of the utility model.

[0017] Label Description: 1-puncture needle, 2-drainage tube, 3-drug delivery cavity, 4-drug inlet, 5-drainage tube, 6-negative pressure suction bag, 7-drug delivery tube,

[0018] 11-needle, 12-needle body, 13-connector, 14-spring, 15-annular cavity, 16-limiting block, 21-opening, 31-dose port, 51-regulating valve, 71-check valve,

[0019] 131 - push rod, 132 - hollow lug. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] The utility model provides a convenient and practical puncture and drainage needle, such as Figure 1-3 The device shown includes a puncture needle 1 and a drainage tube 2, wherein the puncture needle 1 is movably arranged in the drainage tube 2;

[0022] The puncture needle 1 comprises a needle 11, a needle body 12 connected to the needle 11, and a connector 13 sleeved on the rear end of the needle body 12. A spring 14 is sleeved on the end of the needle body 11. An annular cavity 15 for installing the spring 14 is provided at the rear end of the drainage tube 2. One end of the spring 14 sleeved on the needle body 12 is fixedly connected to the connector 13, and the other end abuts against the lower end of the annular cavity 15. A limit block 16 for limiting the spring 14 is provided at the upper end of the annular cavity 15. Both the needle 11 and the needle body 12 are hollow.

[0023] The connector 13 includes a push rod 131 movably disposed in the annular cavity 15 for fixing the connection spring 14 and a hollow lug 132 disposed outside the annular cavity 15 and connected to one end of the push rod 131 for pushing the push rod 131; the hollow lug 132 is connected to the guide tube 5, and the other end of the guide tube 5 is connected to the negative pressure suction bag 6. The guide tube 5 is provided with a flow rate regulating valve 51.

[0024] The drainage tube 2 is also provided with a drug delivery cavity 3, and a drug delivery port 21 connected to the drug delivery cavity 4 is provided on the outer wall; a drug delivery port 4 is provided at one end of the drug delivery cavity 3 away from the drug delivery port 31. The drug delivery port 4 is connected to a drug delivery tube 7, and a one-way valve 71 is provided on the drug delivery tube 7.

[0025] Working principle and process: When using the utility model, first push the lug 132 so that the push rod 131 pushes the needle 11 forward, so that the needle 11 is pushed out of the drainage tube 2, and the puncture action is performed at this time. When the puncture is completed, the force acting on the hollow lug 132 is cancelled, so that the needle automatically retracts into the needle cover after puncture, so that its tip is not exposed, and the drainage action is performed again at this time. During drainage, by adjusting the flow rate regulating valve 51 on the drainage tube 5, the accumulated fluid in the patient's body is drained to the negative pressure suction bag 6. When the drainage is completed, the drug solution can be injected into the drug delivery cavity 3 to achieve the purpose of drug delivery without replacing the indwelling needle.

[0026] Although the utility model uses specific embodiments and their alternatives to illustrate and describe the utility model, it should be understood that various changes and modifications can be implemented as long as they do not deviate from the spirit and scope of the utility model. In the above-mentioned embodiments, unless otherwise clearly specified and limited, the terms "connection", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances. In addition, the orientation or position relationship indicated by the terms "up and down", "left and right" and the like are based on the orientation or position relationship shown in the drawings, which is only for the convenience of description and simplified description, and does not indicate or imply a specific orientation.

[0027] Therefore, it should be understood that the present invention is not limited in any sense except by the appended claims and their equivalents.

Claims

1. A convenient and practical puncture and drainage needle, characterized by: It comprises a puncture needle (1) and a drainage tube (2), wherein the puncture needle (1) is movably arranged in the drainage tube (2); The puncture needle (1) comprises a needle head (11), a needle body (12) connected to the needle head (11), and a connector (13) sleeved on the rear end of the needle body (12); a spring (14) is sleeved on the end of the needle body (12); an annular cavity (15) for accommodating the spring (14) is provided at the rear end of the drainage tube (2); one end of the spring (14) sleeved on the needle body (12) is fixedly connected to the connector (13), and the other end abuts against the lower end of the annular cavity (15); a limit block (16) for limiting the spring (14) is provided at the upper end of the annular cavity (15); the needle head (11) and the needle body (12) are both hollow; The connecting head (13) comprises a push rod (131) movably arranged in the annular cavity (15) for fixing the connecting spring (14), and a hollow lug (132) arranged outside the annular cavity (15) and connected to one end of the push rod (131) for pushing the push rod (131); the hollow lug (132) is connected to a guide tube (5), and the other end of the guide tube (5) is connected to a negative pressure suction bag (6).

2. The convenient and practical puncture and drainage needle according to claim 1, characterized in that: The wall of the drainage tube (2) is also provided with a drug delivery cavity (3), and the outer wall is provided with a drug delivery port (31) connected to the drug delivery cavity (3); the drug delivery cavity (3) is provided with a drug inlet (4) at one end away from the drug delivery port (31).

3. The convenient and practical puncture and drainage needle according to claim 1 is characterized in that: The flow guide pipe (5) is provided with a flow rate regulating valve (51).

4. The convenient and practical puncture and drainage needle according to claim 2 is characterized in that: The drug inlet (4) is connected to a drug delivery tube (7), and a one-way valve (71) is provided on the drug delivery tube (7).

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