Puncture needle for department of hematology

Abstract

The utility model discloses a puncture needle for the department of hematology, belongs to the technical field of bone marrow puncture needles, and aims to solve the problem of parts. Comprising a needle tube and a solid column, the end, away from the head, of the needle tube is provided with a first tube opening, the side wall face of the needle tube is provided with a second tube opening, the second tube opening is provided with a connector, and the connector is used for being connected with an injector. The end, away from the head, of the solid column is provided with a rotary knob, and the end, away from the head, of the solid column is in threaded connection with the end, away from the head, of the needle tube. The radius of the solid column is smaller than the inner diameter of the wall of the needle tube; an arc-shaped plate is arranged on the outer wall of the end, close to the head, of the solid column, the central angle of the arc-shaped plate is smaller than 360 degrees, the solid column can move back and forth between a first position and a second position, the arc-shaped plate is located in a tube body of the needle tube at the first position, and the arc-shaped plate is flush with the head at the second position; the utility model can prevent the needle tube from being blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of bone marrow puncture needles, in particular to a puncture needle for hematology department. Background Technique

[0002] Puncture needles are commonly used medical devices, which can be used to puncture organs, tissues or inject drugs. The range of use of puncture needles is relatively wide. For example, in the hematology department, puncture needles are used for blood drawing, drainage and other operations. Sometimes in the hematology department, puncture needles are also used to puncture the bone marrow for bone marrow extraction or other operations.

[0003] In the related art, most of the bone marrow puncture needles have a puncture end similar to an obliquely cut triangular surface, which is convenient for the puncture of the puncture needle. However, this structure has a sharp edge and has a cutting effect on the body. In actual operation, the tube orifice of the puncture needle is easily blocked by the cut body tissue, which brings inconvenience to the work of medical staff.

[0004] The disclosure of the above background technical content is only used to assist in understanding the concept and technical solution of the present utility model, and it does not necessarily belong to the prior art of this patent application. Without clear evidence showing that the above content was publicly available on the filing date of this patent application, the above background technology should not be used to evaluate the novelty and creativity of this application. Content of the Utility Model

[0005] This application provides a puncture needle for hematology department, which can prevent the needle tube from being blocked and is beneficial for medical staff to treat and rescue patients.

[0006] To achieve the above object, this application adopts the following technical solution: A puncture needle for hematology department, comprising: a needle tube and a solid column. The head of the needle tube is an oblique needle tip; one end of the needle tube away from the head has a first tube orifice, and a second tube orifice is provided on the side wall surface of the needle tube. A connector is provided at the second tube orifice for connecting with a syringe; the solid column is inserted into the needle tube from the first tube orifice, a knob is provided at one end of the solid column away from the head, and one end of the solid column away from the head is threadedly connected with one end of the needle tube away from the head; the radius of the solid column is smaller than the inner diameter of the tube wall of the needle tube; an arc-shaped plate is provided on the outer wall of one end of the solid column close to the head, and the central angle of the arc-shaped plate is less than 360°. The solid column can move back and forth between a first position and a second position. In the first position, the arc-shaped plate is located inside the tube body of the needle tube, and in the second position, the arc-shaped plate is flush with the head.

[0007] In the embodiment of the present application, the solid column is in the first position under normal conditions. When the head of the syringe needle is blocked, the solid column can be rotated by turning the knob to move from the first position towards the direction close to the second position. During the movement, the arc-shaped plate can contact the blockage in the syringe needle and stir and extrude it. When the solid column switches to the second position, the blockage can be pushed out of the syringe needle. Therefore, the syringe needle can be prevented from being blocked. In addition, by rotating the knob clockwise or counterclockwise, the solid column can be switched back and forth between the first position and the second position to improve the cleaning effect. When the blockage in the syringe needle is cleared, the syringe is connected to the connector to perform bone marrow extraction.

[0008] In addition, since the second nozzle is provided, it is not necessary to withdraw the solid column from the syringe needle, and bone marrow extraction can be performed. Compared with the method of withdrawing the solid column from the syringe needle and then connecting the syringe to the first nozzle for bone marrow extraction, the risk of contamination can be reduced.

[0009] In some possible implementation manners, the central angle range of the arc-shaped plate is greater than or equal to 10° and less than or equal to 30°. In this way, the gap is large enough to facilitate bone marrow extraction, and the arc-shaped plate can have a certain stiffness and is not easily damaged.

[0010] In some possible implementation manners, the outer diameter of the arc-shaped plate is equal to the inner diameter of the tube wall of the syringe needle. In this way, the cleaning effect of the arc-shaped plate on the blockage can be improved.

[0011] In some possible implementation manners, there is an external thread on the wall surface of the end of the solid column far from the head, and an internal thread is provided on the inner wall surface of the end of the syringe needle far from the head.

[0012] In some possible implementation manners, the connector is configured with a rubber stopper. In this way, the connector can be guaranteed to be sealed in the normal state, reducing the risk of contamination.

[0013] In some possible implementation manners, the puncture needle for hematology department further includes a puncture assistance structure, and the puncture assistance structure includes a fixing ring, a finger plate, and two groups of finger grooves. The fixing ring is fixedly sleeved on the syringe needle and is arranged far from the head. The finger plate is fixedly connected to the fixing ring, and the two groups of finger grooves are symmetrically opened on the side wall of the finger plate close to the head. In this way, when using the device for puncture operation, the four fingers of the medical staff are respectively inserted into the two groups of finger grooves, and the palm contacts the knob, then the device can be firmly held to perform the puncture operation on the patient, with good puncture stability and improved safety performance of the device. Description of the Drawings

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the description of the embodiments or the prior art. It should be understood that in all the drawings, the same reference numerals represent the same elements. In the drawings, for the sake of clarity and convenience of understanding, the dimensions of some features may be deformed.

[0015] Figure 1 Structural schematic diagram of a puncture needle for hematology department provided in some embodiments of the present application;

[0016] Figure 2 is Figure 1 Internal structural schematic diagram of the puncture needle for hematology department shown;

[0017] Figure 3 is Figure 2 Enlarged view of the circled part at portion A of the structure shown;

[0018] Figure 4 is Figure 2 Enlarged view of the circled part at portion B of the structure shown.

[0019] Description of reference numerals:

[0020] 1. Syringe tube; 11. Head; 12. First nozzle; 13. Second nozzle; 14. Connector; 141. Rubber stopper; 15. Internal thread; 2. Solid column; 21. Knob; 22. Arc-shaped plate; 23. External thread; 3. Puncture assistance structure; 31. Fixed ring; 32. Finger plate; 33. Finger groove. Detailed implementation manners

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] It should be noted that in the description of the present invention, the terms indicating directions or positional relationships such as "in", "on", "under", "horizontal", "inside", etc. are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present invention.

[0023] In addition, it should be noted that in the description of the present utility model, unless otherwise clearly specified and defined, the terms "set", "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0024] Please refer to Figures 1-4 , an embodiment of the present application provides a puncture needle for hematology department, including: a needle tube 1 and a solid column 2. The head 11 of the needle tube 1 is an inclined needle tip; one end of the needle tube 1 away from the head 11 has a first tube orifice 12, and a second tube orifice 13 is provided on the side wall surface of the needle tube 1. A connector 14 is provided at the second tube orifice 13, and the connector 14 is used to connect with a syringe; the solid column 2 is inserted into the needle tube 1 from the first tube orifice 12. A knob 21 is provided at one end of the solid column 2 away from the head 11, and one end of the solid column 2 away from the head 11 is threadedly connected to one end of the needle tube 1 away from the head 11.

[0025] The radius of the solid column 2 is smaller than the inner diameter of the tube wall of the needle tube 1; thus, there is a gap between the solid column 2 and the needle tube 1. An arc-shaped plate 22 is provided on the outer wall of one end of the solid column 2 close to the head 11, and the central angle of the arc-shaped plate 22 is less than 360°. The solid column 2 can move back and forth between a first position and a second position. When in the first position, the arc-shaped plate 22 is located inside the tube body of the needle tube 1, and when in the second position, the arc-shaped plate 22 is flush with the head 11.

[0026] During use, the solid column 2 is normally in the first position. When the head 11 of the needle tube 1 is blocked, the solid column 2 can be rotated by rotating the knob 21 to move from the first position towards the direction close to the second position. During the movement, the arc-shaped plate 22 can contact the blockage in the needle tube 1 and stir and extrude it. When the solid column 2 is switched to the second position, the blockage can be pushed out of the needle tube 1. Therefore, the needle tube 1 can be prevented from being blocked. In addition, by rotating the knob 21 clockwise or counterclockwise, the solid column 2 can be switched back and forth between the first position and the second position to improve the cleaning effect. When the blockage in the needle tube 1 is cleared, the syringe is connected to the connector 14 for bone marrow extraction.

[0027] In addition, due to the provision of the second tube orifice 13, bone marrow extraction can be carried out without removing the solid column 2 from the needle tube 1. Compared with the method of removing the solid column 2 from the needle tube 1 and then connecting the syringe to the first orifice for bone marrow extraction, the risk of contamination can be reduced.

[0028] Please refer to Figure 1, in some embodiments, the connector 14 is configured with a rubber plug 141. In this way, the connector 14 can be sealed in the normal state, reducing the risk of contamination.

[0029] Please refer to Figure 1 , in some embodiments, the puncture needle for hematology department further includes a puncture assisting structure 3. The puncture assisting structure 3 includes a fixing ring 31, a finger plate 32 and two groups of finger grooves 33. The fixing ring 31 is fixedly sleeved on the needle tube 1 and is arranged away from the head 11. The fixing ring 31 and the needle tube 1 can be fixedly connected by means of clamping, welding, etc.; or the fixing ring 31 and the needle tube 1 are integrally formed.

[0030] The finger plate 32 is fixedly connected to the fixing ring 31. The connection mode between the finger plate 32 and the fixing ring 31 can be designed with reference to the connection mode between the fixing ring 31 and the needle tube 1, which will not be elaborated here. The two groups of finger grooves 33 are symmetrically arranged on the side wall of the finger plate 32 close to the head 11. In this way, when using the device for puncture operation, the four fingers of the medical staff are respectively inserted into the two groups of finger grooves 33, and the palm contacts the knob 21, then the device can be firmly held to perform the puncture operation on the patient. The puncture stability is good, and the safety performance of the device is improved.

[0031] Please refer to Figure 2 and Figure 3 , in some embodiments, there is an external thread 23 on the wall surface of one end of the solid column 2 away from the head 11, and an internal thread 15 is arranged on the inner wall surface of one end of the needle tube 1 away from the head 11.

[0032] In some embodiments, the central angle range of the arc-shaped plate 22 is greater than or equal to 10° and less than or equal to 30°. In this way, the gap is large enough to facilitate bone marrow extraction, and the arc-shaped plate 22 can have a certain stiffness and is not easily damaged.

[0033] Please refer to Figure 4 , in some embodiments, the outer diameter of the arc-shaped plate 22 is equal to the inner diameter of the tube wall of the needle tube 1. In this way, the cleaning effect of the arc-shaped plate 22 on the blockage can be improved.

[0034] The above describes the present invention and its implementation manners. Such description is not restrictive. What is shown throughout the text is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and without departing from the creative concept of the present invention, they design similar structural manners and embodiments without creative efforts, which should all fall within the protection scope of the present invention.

Claims

1. A puncture needle for hematology department, characterized in that, Comprising: A syringe needle (1), the head (11) of the syringe needle (1) being an inclined needle tip; One end of the syringe needle (1) away from the head (11) has a first nozzle (12), a second nozzle (13) is provided on the side wall surface of the syringe needle (1), and a connector (14) is provided at the second nozzle (13), and the connector (14) is used to connect with a syringe; A solid column (2), the solid column (2) is inserted into the syringe needle (1) from the first nozzle (12), a knob (21) is provided at one end of the solid column (2) away from the head (11), and one end of the solid column (2) away from the head (11) is threadedly connected to one end of the syringe needle (1) away from the head (11); the radius of the solid column (2) is smaller than the inner diameter of the tube wall of the syringe needle (1); an arc-shaped plate (22) is provided on the outer wall of one end of the solid column (2) close to the head (11), the central angle of the arc-shaped plate (22) is less than 360°, and the solid column (2) can move back and forth between a first position and a second position. In the first position, the arc-shaped plate (22) is located inside the tube body of the syringe needle (1), and in the second position, the arc-shaped plate (22) is flush with the head (11).

2. The puncture needle for hematology department according to claim 1, wherein, The range of the central angle of the arc-shaped plate (22) is greater than or equal to 10° and less than or equal to 30°.

3. The puncture needle for hematology department according to claim 2, characterized in that, The outer diameter of the arc-shaped plate (22) is equal to the inner diameter of the tube wall of the syringe needle (1).

4. The puncture needle for hematology according to any one of claims 1-3, characterized in that, External threads (23) are provided on the wall surface of one end of the solid column (2) away from the head (11), and internal threads (15) are provided on the inner wall surface of one end of the syringe needle (1) away from the head (11).

5. The puncture needle for hematology according to any one of claims 1-3, characterized in that, The connector (14) is configured with a rubber stopper (141).

6. The puncture needle for hematology according to any one of claims 1-3, characterized in that, The puncture needle for hematology department further includes a puncture assistance structure (3), and the puncture assistance structure (3) includes a fixing ring (31), a finger plate (32) and two groups of finger grooves (33). The fixing ring (31) is fixedly sleeved on the syringe needle (1) and is arranged away from the head (11), the finger plate (32) is fixedly connected to the fixing ring (31), and the two groups of finger grooves (33) are symmetrically opened on the side wall of the finger plate (32) close to the head (11).

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