Remaining needle protection connector

Abstract

The utility model discloses an indwelling needle protective joint, which belongs to the technical field of medical instruments and comprises an extension tube, a positive pressure joint and a heparin cap, the top end of the extension tube is connected with an indwelling needle, a tube sealing clamp is arranged on the extension tube, and the indwelling needle protective joint further comprises a protective joint. The protective joint is composed of a main protective tube and an auxiliary protective tube, and a detachable blood sampling protector is arranged at the bottom end of the main protective tube; the auxiliary protection pipe is arranged on the main protection pipe, the top end of the auxiliary protection pipe extends into the main protection pipe and is fixedly connected with the main protection pipe, so that the interior of the auxiliary protection pipe is communicated with the interior of the main protection pipe, and the heparin cap is arranged at the bottom end of the auxiliary protection pipe. In the process that a blood collection tube extends into the cylindrical groove from the bottom end of the blood collection protector, the blood collection protector can cover and protect the blood collection needle, so that the hand of a medical worker is protected by the blood collection protector and cannot make contact with the blood collection needle, and the situation that the blood collection needle pricks the hand of the medical worker can be effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a protective connector for indwelling needles. Background Technology

[0002] For patients who require long-term intravenous infusion or have difficulty with venipuncture, indwelling needles can alleviate patient pain and reduce the puncture burden on medical staff. Indwelling needles have good flexibility, cause little stimulation to blood vessels, protect veins, avoid vascular damage caused by repeated punctures, and provide patients with multiple treatment pathways, which is beneficial for treatment and emergency care.

[0003] The indwelling needle used in clinical practice consists of a steel needle, an indwelling catheter, an extension tube, and a sealing clamp. The steel needle is used to guide the indwelling catheter puncture, and the sealing clamp on the extension tube opens or closes the infusion passage. The bottom end of the extension tube has a heparin cap. However, this type of indwelling needle cannot meet the function of blood collection. Because the indwelling needle does not have a blood collection structure that can be connected to the blood collection tube, when it is necessary to collect blood from the patient, a blood collection needle can be used to connect to the blood collection tube for puncture and blood collection. However, medical staff are prone to puncture injuries due to operational errors when using the blood collection needle for blood collection, which can cause harm to medical staff. Utility Model Content

[0004] This utility model provides an indwelling needle protective connector to solve the aforementioned technical problems.

[0005] The present invention adopts the following technical solution: including an extension tube, a positive pressure connector and a heparin cap, wherein an indwelling needle is connected to the top end of the extension tube, a sealing clamp is provided on the extension tube, and a protective connector is also included.

[0006] The protective connector consists of a main protective tube and a secondary protective tube. The main protective tube is hollow inside. The bottom end of the extension tube extends from the top of the main protective tube and is connected to the inside of the main protective tube. A detachable blood collection protector is provided at the bottom end of the main protective tube.

[0007] The secondary protective tube is installed on the main protective tube. The interior of the secondary protective tube is hollow. The top end of the secondary protective tube extends into the interior of the main protective tube and is fixedly connected to the main protective tube, so that the interior of the secondary protective tube is in communication with the interior of the main protective tube. The heparin cap is installed at the bottom end of the secondary protective tube.

[0008] Preferably, the outer wall of the bottom end of the main protective tube is provided with a first thread for threaded connection with a positive pressure connector, and the outer wall of the bottom end of the secondary protective tube is provided with a second thread for threaded connection with a heparin cap.

[0009] Preferably, the blood collection protector has a cylindrical structure, and a cylindrical groove for inserting a blood collection tube is provided inside the blood collection protector. The cylindrical groove extends through the bottom end of the blood collection protector, and a through hole is provided at the top end of the blood collection protector. The through hole is connected to the cylindrical groove inside the blood collection protector.

[0010] A baffle is provided at the bottom of the through hole at the top of the blood collection device. The baffle is fixedly connected to the inner wall of the through hole of the blood collection device. A fine hole is fixedly provided at the center of the baffle. A blood collection needle that can be inserted into the blood collection tube is provided at the fine hole. The tip of the blood collection needle passes through the baffle and extends to the through hole area of ​​the blood collection device. The bottom puncture part of the blood collection needle passes through the baffle and extends downward a distance inside the blood collection device.

[0011] Preferably, the inner wall of the through hole at the top of the blood collection device is provided with a threaded groove that matches the first thread on the outer wall of the bottom end of the main protective tube.

[0012] Preferably, the blood collection protector is entirely transparent.

[0013] The above-mentioned technical solutions adopted in the embodiments of this utility model can achieve the following beneficial effects:

[0014] Firstly, the blood collection protector in this utility model can be used for blood collection tube insertion. During the process of inserting the blood collection tube from the bottom end of the blood collection protector into the cylindrical groove, the blood collection protector will cover and protect the blood collection needle, so that the hands of medical staff are protected by the blood collection protector and cannot come into contact with the blood collection needle, which can effectively prevent the blood collection needle from pricking the hands of medical staff.

[0015] Secondly, by creating a threaded groove on the inner wall of the through hole at the top of the blood collection device, a threaded connection is formed between the blood collection device and the bottom of the main protective tube, which facilitates the installation and connection of the blood collection device and the main protective tube by medical personnel. Attached Figure Description

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the protective connector in this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the protective connector, blood collection protector, and heparin cap in this utility model;

[0021] Figure 5 This is a cross-sectional view of the blood collection protector in the installation state of this utility model;

[0022] Figure 6 This is a cross-sectional view of the blood collection protector in this utility model.

[0023] Figure Labels

[0024] Extension tube 1, positive pressure connector 12, heparin cap 13, indwelling needle 14, sealing clamp 15, protective connector 2, main protective tube 21, secondary protective tube 22, first thread 23, second thread 24, blood collection protector 3, cylindrical groove 31, through hole 32, baffle 33, blood collection needle 34, threaded groove 35. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] The technical solutions provided by the various embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0027] This utility model provides a protective connector for an indwelling needle, including an extension tube 1, a positive pressure connector 12 and a heparin cap 13. The top end of the extension tube 1 is connected to an indwelling needle 14, and a sealing clamp 15 is provided on the extension tube 1. It also includes a protective connector 2.

[0028] The protective connector 2 consists of a main protective tube 21 and a secondary protective tube 22. The main protective tube 21 is hollow inside. The bottom end of the extension tube 1 extends from the top of the main protective tube 21 and is connected to the inside of the main protective tube 21. A detachable blood collection protector 3 is provided at the bottom end of the main protective tube 21.

[0029] The secondary protective tube 22 is disposed on the main protective tube 21. The interior of the secondary protective tube 22 is hollow. The top end of the secondary protective tube 22 extends into the interior of the main protective tube 21 and is fixedly connected to the main protective tube 21, so that the interior of the secondary protective tube 22 and the interior of the main protective tube 21 are interconnected. The heparin cap 13 is disposed at the bottom end of the secondary protective tube 22.

[0030] Furthermore, the outer wall of the bottom end of the main protective tube 21 is provided with a first thread 23 that can be threaded to the positive pressure connector 12, and the outer wall of the bottom end of the secondary protective tube 22 is provided with a second thread 24 that can be threaded to the heparin cap 13.

[0031] In clinical practice, blood needs to be drawn from patients with indwelling needle 14 first. Before inserting indwelling needle 14, blood collection protector 3 can be installed at the bottom of main protective tube 21.

[0032] Then, the end of the heparin cap 13 is fitted onto the outside of the bottom end of the auxiliary protective tube 22, and the heparin cap 13 is rotated so that the internal thread inside the end of the heparin cap 13 and the second thread 24 on the outer side wall of the bottom end of the auxiliary protective tube 22 form a threaded engagement, thereby completing the installation of the blood collection protector 3 and the heparin cap 13 with the entire protective connector 2.

[0033] When collecting blood, the sealing clamp 15 on the extension tube 1 should be opened, and then the blood collection tube should be placed into the blood collection protector 3 to collect blood. After the blood collection is completed, the sealing clamp 15 can be closed to prevent blood from continuing to flow into the extension tube 1 through the indwelling needle 14.

[0034] After blood collection is completed, the blood collection protector 3 is removed from the bottom end of the main protective tube 21, and the end of the positive pressure connector 12 is fitted onto the outside of the bottom end of the main protective tube 21. The positive pressure connector 12 is rotated so that the internal thread inside the end of the positive pressure connector 12 forms a thread engagement with the first thread 23 on the outer side wall of the bottom end of the main protective tube 21. This allows the positive pressure connector 12 to be installed on the main protective tube 21, so that the protective connector 2 can be used as a dual-channel pipeline for multiple and repeated punctures for infusion and drug injection.

[0035] Furthermore, the blood collection protector 3 has a cylindrical structure, and a cylindrical groove 31 for inserting a blood collection tube is provided inside the blood collection protector 3. The cylindrical groove 31 penetrates the bottom end of the blood collection protector 3, and a through hole 32 is provided at the top end of the blood collection protector 3. The through hole 32 is connected to the cylindrical groove 31 inside the blood collection protector 3.

[0036] A baffle 33 is provided at the bottom of the through hole 32 at the top of the blood collection protector 3. The baffle 33 is fixedly connected to the inner wall of the through hole 32 of the blood collection protector 3. A fine hole is fixedly provided at the center of the baffle 33. A blood collection needle 34 that can be inserted into the blood collection tube is provided at the fine hole. The top of the blood collection needle 34 passes through the baffle 33 and extends to the through hole 32 area of ​​the blood collection protector 3. The bottom puncture part of the blood collection needle 34 passes through the baffle 33 and extends downward a distance inside the blood collection protector 3.

[0037] The inner wall of the through hole 32 at the top of the blood collection protector 3 is provided with a threaded groove 35 that matches the first thread 23 on the outer wall of the bottom end of the main protective tube 21.

[0038] When installing the blood collection protector 3 to the bottom end of the main protective tube 21, the through hole 32 at the top of the blood collection protector 3 can be sleeved on the outer side wall of the bottom end of the main protective tube 21. During the sleeved connection, the blood collection protector needs to be rotated so that the threaded groove 35 on the inner side of the through hole 32 of the blood collection protector sleeves on the first thread 23 on the outer side wall of the bottom end of the main protective tube 21 and forms a threaded connection. This completes the installation operation of the blood collection protector 3 and the main protective tube 21.

[0039] When blood collection is required, hold the blood collection protector 3 with one hand and the blood collection tube with the other hand, and then point the top collection end of the blood collection tube toward the blood collection protector 3. Insert the blood collection tube into the cylindrical groove 31 from the bottom end of the blood collection protector 3. As the blood collection tube is inserted, the bottom puncture part of the blood collection needle 34 on the baffle 33 will contact the top collection end of the blood collection tube and pierce into the collection tube. Then open the sealing clamp 15 to make the inside of the extension tube 1 unobstructed. At this time, the blood in the blood vessel will flow into the protective connector 2 through the indwelling needle 14 and the extension tube 1, and then flow into the blood collection tube through the blood collection needle 34 on the blood collection protector 3. This completes the blood collection operation.

[0040] Throughout the entire operation, the medical staff's hands only come into contact with the outside of the blood collection protector 3 and the outside of the blood collection tube. As the blood collection tube is inserted from the bottom of the blood collection protector 3 into the cylindrical groove 31, the blood collection protector 3 will cover and protect the blood collection needle 34, thus protecting the medical staff's hands and preventing them from coming into contact with the blood collection needle 34. This avoids the situation in the prior art where the blood collection needle 34 is connected to the blood collection tube to perform puncture blood collection on the patient, which is prone to causing the blood collection needle 34 to come into contact with the medical staff's hands due to operational errors.

[0041] Furthermore, the blood collection protector 3 is made entirely of transparent material. After the blood collection tube is inserted into the cylindrical groove 31 of the blood collection protector 3, medical personnel can observe the blood collection needle 34 inside through the transparent blood collection protector 3 to determine whether the blood collection needle 34 has reached the appropriate depth after piercing the blood collection tube.

[0042] The above description is merely an embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of the claims of the present invention.

Claims

1. A protective connector for an indwelling needle, comprising an extension tube (1), a positive pressure connector (12), and a heparin cap (13), wherein an indwelling needle (14) is connected to the top end of the extension tube (1), and a sealing clamp (15) is provided on the extension tube (1), characterized in that, It also includes a protective connector (2); The protective connector (2) consists of a main protective tube (21) and a secondary protective tube (22). The interior of the main protective tube (21) is hollow. The bottom end of the extension tube (1) extends from the top of the main protective tube (21) and communicates with the interior of the main protective tube (21). A detachable blood collection protector (3) is provided at the bottom end of the main protective tube (21). The secondary protective tube (22) is disposed on the main protective tube (21). The interior of the secondary protective tube (22) is hollow. The top end of the secondary protective tube (22) extends into the interior of the main protective tube (21) and is fixedly connected to the main protective tube (21), so that the interior of the secondary protective tube (22) is interconnected with the interior of the main protective tube (21). The heparin cap (13) is disposed at the bottom end of the secondary protective tube (22). The blood collection protector (3) has a cylindrical structure. Inside the blood collection protector (3) is a cylindrical groove (31) for inserting blood collection tubes. The cylindrical groove (31) penetrates the bottom end of the blood collection protector (3). The top end of the blood collection protector (3) is provided with a through hole (32), which is connected to the cylindrical groove (31) inside the blood collection protector (3). A baffle (33) is provided at the bottom of the through hole (32) at the top of the blood collection protector (3). The baffle (33) is fixedly connected to the inner wall of the through hole (32) of the blood collection protector (3). A fine hole is fixedly provided at the center of the baffle (33). A blood collection needle (34) that can be inserted into the blood collection tube is provided at the fine hole. The top of the blood collection needle (34) passes through the baffle (33) and extends to the through hole (32) of the blood collection protector (3). The bottom puncture part of the blood collection needle (34) passes through the baffle (33) and extends downward a distance inside the blood collection protector (3).

2. The indwelling needle protective connector according to claim 1, characterized in that, The bottom outer wall of the main protective tube (21) is provided with a first thread (23) that can be threadedly connected to the positive pressure connector (12).

3. The indwelling needle protective connector according to claim 1, characterized in that, The outer wall of the bottom end of the secondary protective tube (22) is provided with a second thread (24) that can be threadedly connected to the heparin cap (13).

4. The indwelling needle protective connector according to claim 1, characterized in that, The inner wall of the through hole (32) at the top of the blood collection protector (3) is provided with a threaded groove (35) that matches the first thread (23) on the outer wall of the bottom end of the main protective tube (21).

5. The indwelling needle protective connector according to claim 1, characterized in that, The blood collection protector (3) is entirely transparent.

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