Disposable puncture suction needle with side hole

Abstract

The utility model provides a disposable puncture suction needle with side holes, which belongs to the technical field of medical instruments and comprises a hollow needle core and a needle sheath sleeved outside the hollow needle core, the outer wall of one end of the hollow needle core is provided with a plurality of side holes, and an included angle is formed between the axis of each side hole and the axis of the hollow needle core; one end of the hollow needle core is connected with the needle sheath, the other end of the hollow needle core is connected with a connector, the needle sheath is connected with a fixing plate, the fixing plate is provided with a through hole for the hollow needle core to penetrate through, and the connector is connected with the fixing plate through an elastic reset part; the needle core is hollow and is provided with a plurality of side holes, so that the needle core does not need to be removed during puncture, and direct suction is realized; a plurality of side holes are easy to suck fester and facilitate fester cavity flushing; the needle core is directly withdrawn when the needle is set, and the needle passage is pollution-free; and compared with the traditional re-insertion of the needle core, the pricking injury danger of medical personnel is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a disposable puncture and aspiration needle with a side hole. Background Art

[0002] Cyst is a common disease. Currently, the cyst fluid is mostly aspirated with a suction needle and a suction device under real-time ultrasound guidance. The main defects are as follows: after the suction needle is inserted into the cyst, as the cyst fluid in the cyst decreases, the needle tip will be exposed in the cyst. At this time, if the operation is improper, the suction needle will pierce the inner wall of the cyst, increasing the patient's pain. If it pierces the surrounding blood vessels, it will endanger the patient's life. Therefore, when the cyst fluid in the cyst is less, the medical staff will remove the suction needle from the patient's body and stop aspirating the cyst fluid, which will cause cyst fluid to remain in the cyst and the treatment effect is poor;

[0003] In order to solve the above technical problems, for example, the patent with patent number 201420109377.6 proposes a cyst aspiration needle, which is suitable for physical treatment of various types of cysts and belongs to the field of medical device technology; the aspiration needle includes a hollow aspiration needle, a connector connected to the hollow aspiration needle, the outer sleeve of the hollow aspiration needle is provided with a protective sleeve, the upper end of the protective sleeve is equipped with a limiting device that can push the needle tip of the aspiration needle to the outside of the protective sleeve or drive the needle tip to retract into the protective sleeve, the limiting device includes a hollow desktop limiting part fixed to the upper end of the protective sleeve, a spring that is sleeved on the outside of the hollow aspiration needle and one end of which is fixed in the hollow desktop limiting part, the other end of the spring is in contact with the inner end of the connector, and a travel switch that limits the spring. The utility model has a reasonable structural design, which can prevent the puncture needle from piercing the cyst wall and blood vessels, and can completely drain the cystic fluid in the cyst;

[0004] The applicant has found the following technical problems in the above-mentioned prior art in combination with clinical practicality:

[0005] First, the axial through hole can only suction the corresponding area, and cannot achieve comprehensive and multi-angle suction at the same time, resulting in a technical problem of low pus suction efficiency; second, after suction, when the abscess cavity is flushed, the axial through hole cannot directly flush the side wall of the abscess cavity, resulting in a technical problem of poor abscess cavity flushing effect. Summary of the invention

[0006] The utility model provides a disposable puncture and aspiration needle with a side hole, which solves the problems of low pus aspiration efficiency and poor pus cavity flushing effect during surgery.

[0007] The utility model provides a disposable puncture and aspiration needle with a side hole, comprising a hollow needle core and a needle sheath sleeved on the outside of the hollow needle core, a plurality of side holes are provided on the outer wall of one end of the hollow needle core, and an angle is formed between the axis of the side holes and the axis of the hollow needle core; the other end of the hollow needle core is connected to a connector, the needle sheath is connected to a fixing plate, a through hole is provided on the fixing plate for the hollow needle core to pass through, and the connector is connected to the fixing plate via an elastic reset portion.

[0008] Preferably, one end of the hollow needle core is a curved structure or a linear structure.

[0009] Preferably, a plurality of the side holes are evenly distributed on the outer wall of the hollow needle core.

[0010] Preferably, the angle between the axis of the side hole and the axis of the hollow needle core is 90°.

[0011] Preferably, the diameter of the side hole becomes smaller as it is closer to one end of the hollow needle core.

[0012] Preferably, the cross-section of the side hole is a conical structure, and the large diameter end of the conical structure faces the interior of the hollow needle core.

[0013] Preferably, the elastic reset portion is a retractable resin jacket.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The needle core of the utility model is hollow and has multiple side holes. During puncture, there is no need to remove the needle core and suction can be directly performed. The multiple side holes are easy to suction pus and are beneficial to flushing the pus cavity. When the needle is removed, the needle core is directly retracted and the needle tract is not contaminated. Compared with the traditional method of reinserting the needle core, the risk of needlestick injuries to medical personnel is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the overall structure of a disposable puncture and aspiration needle with a side hole in the utility model;

[0018] Figure 2 It is a schematic diagram of a linear structure;

[0019] Figure 3 It is a schematic diagram of the bending structure;

[0020] Among them: a hollow needle core 1, a needle outer sheath 2, a fixing plate 3, an elastic reset part 4, a connecting head 5, and a side hole 6. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solution of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of them. 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.

[0022] In the description of the utility model, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the 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 operate in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, if the terms "first", "second", "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0024] like Figures 1 to 3As shown, the utility model provides a disposable puncture and aspiration needle with a side hole, comprising a hollow needle core 1 and a needle sheath 2 sleeved on the outside of the hollow needle core 1, wherein one end of the hollow needle core 1 (i.e., the needle tip) is a curved structure or a straight structure, and a plurality of side holes 6 are provided on the outer wall of one end of the hollow needle core 1. Preferably, the side holes 6 are evenly distributed, and an angle is formed between the axis of the side holes 6 and the axis of the hollow needle core 1. Preferably, the angle is perpendicular to the axis of the hollow needle core 1, i.e., the angle is 90°; the other end of the hollow needle core 1 is connected to a connector 5, the needle sheath 2 is connected to a fixing plate 3, a through hole is provided on the fixing plate 3 for the hollow needle core 1 to pass through, and the connector 5 is connected to the fixing plate 3 via an elastic reset portion 4, and the elastic reset portion 4 only needs to have an elastic reset function. The needle core is hollow and has multiple side holes 6. During puncture, there is no need to remove the needle core, and suction can be directly performed. Since the side holes 6 are opposite to the side walls of the abscess cavity, the multiple side holes 6 are easy to aspirate pus and are conducive to flushing the abscess cavity. When removing the needle, the needle core is directly withdrawn, and the needle channel is not contaminated. Compared with the traditional method of reinserting the needle core, the risk of needlestick injuries to medical personnel is reduced. The bendable needle tip is convenient for multi-directional puncture and flushing in the cavity. The elastic reset part 4 is a retractable resin jacket. During chemical ablation, there is no need to change the outer sheath needle channel, and multi-point injection can be achieved by rotation. It should be noted here that if the elastic reset part 4 is a spring, the rotation effect will be greatly reduced. Usage: After puncturing the target abscess cavity or liquid cavity, directly push the needle core and fix it with the needle sheath to aspirate or flush. At the end of treatment, the puncture needle can be removed after the needle core is withdrawn. If the bending direction of the needle tip needs to be changed, the puncture needle needs to be rotated after the needle core is withdrawn and the needle core needs to be pushed forward again and fixed.

[0025] As an extension / expansion of a technical solution, the diameter of the side hole 6 in the utility model becomes smaller as it is closer to one end of the hollow needle core 1, thereby fully ensuring that the side hole 6 away from the axial opening end has sufficient pumping capacity, thereby improving the overall pumping efficiency.

[0026] As an extension / expansion of a technical solution, the cross-section of the side hole 6 in the utility model is a conical structure, and the large diameter end of the conical structure faces the interior of the hollow needle core 1, so that when cleaning the abscess cavity, there is a better cleaning effect.

[0027] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications should also be regarded as the protection scope of the utility model.

Claims

1. A disposable puncture and aspiration needle with a side hole, characterized in that: It includes a hollow needle core and a needle sheath sleeved on the outside of the hollow needle core, a plurality of side holes are opened on the outer wall of one end of the hollow needle core, and an angle is formed between the axis of the side holes and the axis of the hollow needle core; the other end of the hollow needle core is connected to a connector, the needle sheath is connected to a fixed plate, a through hole is opened on the fixed plate for the hollow needle core to pass through, and the connector is connected to the fixed plate via an elastic reset portion.

2. A disposable puncture and aspiration needle with a side hole according to claim 1, characterized in that: One end of the hollow needle core is a curved structure or a linear structure.

3. A disposable puncture and aspiration needle with a side hole according to claim 1 or 2, characterized in that: A plurality of side holes are evenly distributed on the outer wall of the hollow needle core.

4. A disposable puncture and aspiration needle with a side hole according to claim 3, characterized in that: The angle between the axis of the side hole and the axis of the hollow needle core is 90°.

5. A disposable puncture and aspiration needle with a side hole according to claim 4, characterized in that: The diameter of the side hole is smaller as it is closer to one end of the hollow needle core.

6. A disposable puncture and aspiration needle with a side hole according to claim 4, characterized in that: The cross section of the side hole is a conical structure, and the large diameter end of the conical structure faces the interior of the hollow needle core.

7. A disposable puncture and aspiration needle with a side hole according to claim 6, characterized in that: The elastic reset portion is a retractable resin jacket.

8. A disposable puncture and aspiration needle with a side hole according to claim 1 or 2, characterized in that: The elastic reset portion is a retractable resin jacket.

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