CN212166143U

CN212166143U - Dispensing needle

Info

Publication number: CN212166143U
Application number: CN201922378158.3U
Authority: CN
Inventors: 蒋超; 董鹏飞; 饶利平; 孙强强; 唐政; 高云峰
Original assignee: Han's Precision Mechatronics Co ltd; Han s Laser Technology Industry Group Co Ltd
Current assignee: Han's Precision Mechatronics Co ltd; Han s Laser Technology Industry Group Co Ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-12-18
Anticipated expiration: 2029-12-24

Abstract

The utility model provides a dispensing needle head, which comprises a needle tube, a needle tube seat fixedly arranged at one end of the needle tube and a needle point fixedly arranged at the other end of the needle tube; the peripheral wall of one end of the needle tube close to the needle point is provided with a communicating hole; the communicating hole communicates the inner cavity of the needle tube with the outside, the width of the hole of the communicating hole is not more than 0.2mm, and the axial length of the communicating hole from one end close to the needle point to one end far away from the needle point is more than that of the sealing rubber plug of the medicine bottle. The utility model provides a dispensing needle head sets up the intercommunicating pore that width is no greater than 0.2mm on the needle tubing and forms the passageway of absorption or injection liquid medicine, when the closure rubber buffer of puncture medicine bottle, the part of closure rubber buffer is difficult to squeeze into the intercommunicating pore, cuts the closure rubber buffer when avoiding pushing and pulling the dispensing needle head, avoids producing rubber granule and blocks up the needle tubing, makes absorption or injection of liquid medicine more smooth and easy, prevents to pollute the liquid medicine; meanwhile, the intercommunicating pore can automatically balance the air pressure inside and outside the medicine bottle during puncture, simplify the medicine dispensing operation and improve the medicine dispensing efficiency.

Description

Dispensing needle

Technical Field

The utility model belongs to the technical field of medical instrument, more specifically say, relate to a syringe needle dispenses.

Background

The existing needles used for intravenous injection and dispensation in hospitals are side-hole needles and bevel needles; one end of the needle point of the bevel needle is provided with a bevel opening, and the bevel opening directly cuts a sealing rubber plug to generate rubber particles when the bevel needle punctures the sealing rubber plug of the medicine bottle; the needle hole size of side hole needle is great, and rubber passes through the pinhole extrusion to the needle tubing when the side hole needle punctures and seals the rubber buffer, forms cutting force cutting rubber granule when leading to pierce or pull out the side hole needle. Consequently, current needle utensil cuts when the puncture seals the rubber buffer and seals the rubber buffer, produces rubber granules and gets into in the syringe, resistance grow when not only causing the extraction liquid medicine, blocks up the syringe and leads to the unable use of needle utensil to need to change again, causes the medicament to pollute moreover, needs dispense again, extravagant liquid medicine, the increase work load of dispensing.

Disclosure of Invention

An object of the utility model is to provide a syringe needle dispenses to produce rubber particle and cause the transfusion hole to block up and pollute the technical problem of liquid medicine when solving the syringe needle utensil that dispenses that exists among the prior art and impales the rubber buffer that seals of medicine bottle.

In order to achieve the above object, the utility model adopts the following technical scheme: providing a dispensing needle head, which comprises a needle tube, a needle tube seat fixedly arranged at one end of the needle tube and a needle point fixedly arranged at the other end of the needle tube; the peripheral wall of one end of the needle tube close to the needle point is provided with a communicating hole; the intercommunicating pore will the inner chamber and the external intercommunication of needle tubing, the pore width of intercommunicating pore is not more than 0.2mm, the intercommunicating pore is from being close to the one end of needle point is to keeping away from the axial length of the one end of needle point is greater than the axial length of the rubber buffer that seals of medicine bottle

Further, the width of the aperture of the communicating hole is 0.1-0.2 mm.

Furthermore, the communication holes are arranged in a plurality, and the communication holes are uniformly distributed around the central axis of the needle tube.

Further, the communication hole is a slit hole.

Further, the length direction of the slit hole is parallel to the central axis of the needle tube.

Further, the communicating holes are a row of axially arranged micropores.

Further, the axial length of the communication hole from the end close to the needle point to the end far away from the needle point is 1-2mm larger than that of the sealing rubber plug.

The utility model provides a dispensing needle head's beneficial effect lies in: compared with the prior art, the utility model discloses the intercommunicating pore that the width is no more than 0.2mm that the syringe needle of dispensing sets up on the needle tubing forms the passageway of absorption or injection liquid medicine, when the closure rubber buffer of puncture medicine bottle, the local of closure rubber buffer is difficult to squeeze into the intercommunicating pore, cuts the closure rubber buffer when avoiding pushing and pulling the syringe needle of dispensing, avoids producing rubber granule and blocks up the needle tubing, makes the absorption or the injection of liquid medicine more smooth and easy, prevents to pollute the liquid medicine, reduces the liquid medicine waste, reduces the repeated work that personnel dispense again; simultaneously the intercommunicating pore can automatically balance the air pressure inside and outside the medicine bottle during puncture, does not need to exhaust or bleed the medicine bottle inside alone manually before and after absorbing or injecting the liquid medicine, simplifies the operation of dispensing, and improves the dispensing efficiency.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic structural view of a dispensing needle provided in an embodiment of the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is a reference view of the dispensing needle of FIG. 1 in use;

FIG. 4 is an enlarged sectional view taken along line B-B of FIG. 3;

fig. 5 is a schematic structural view of a dispensing needle according to another embodiment of the present invention;

FIG. 6 is an enlarged view of FIG. 5 at C;

wherein, in the figures, the respective reference numerals:

1. a needle tube base; 2. a needle tube; 21. a communicating hole; 3. a needle tip.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to 6 together, the dispensing needle of the present invention will now be described. The dispensing needle comprises a needle tube 2, a needle tube seat 1 fixedly arranged at one end of the needle tube 2 and a needle point 3 fixedly arranged at the other end of the needle tube 2, wherein a communication hole 21 is formed in the peripheral wall of one end, close to the needle point 3, of the needle tube 2; the inner cavity of the needle tube 2 is communicated with the outside through the communicating hole 21, the width of a hole of the communicating hole 21 is not more than 0.2mm, the axial length from one end close to the needle point 3 to one end far away from the needle point 3 of the communicating hole 21 is more than that of a sealing rubber plug of a medicine bottle, so that when the medicine dispensing needle penetrates through the sealing rubber plug of the medicine bottle, one end of the communicating hole 21 is positioned outside the medicine bottle, and the other end of the communicating hole 21 is positioned in the medicine bottle.

The needle point 3 of the dispensing needle is pushed to puncture a sealing rubber plug of the medicine bottle, one end of the communicating hole 21 is communicated with the interior of the medicine bottle, the other end of the communicating hole 21 is communicated with the external air pressure, the dispensing needle is stopped being pushed, and the communicating hole 21 can balance the internal air pressure and the external air pressure of the medicine bottle; then the dispensing needle head is continuously pushed until the communicating hole 21 is completely positioned in the medicine bottle, and then the medicine liquid is sucked or injected; after the suction or injection is finished, the dispensing needle head is pulled out, one end of the communicating hole 21 is communicated with the interior of the medicine bottle, the other end of the communicating hole 21 is communicated with the external air pressure, and then the dispensing needle head is continuously pulled out after the pause is carried out, so that the communicating hole 21 can balance the air pressure inside and outside the medicine bottle.

The utility model provides a dispensing needle head, compared with the prior art, the utility model discloses dispensing needle head sets up the intercommunicating pore 21 that the width is no greater than 0.2mm on needle tubing 2 and forms the passageway of absorption or injection liquid medicine, when puncturing the sealing rubber plug of medicine bottle, the local of sealing rubber plug is difficult to squeeze into intercommunicating pore 21, cutting sealing rubber plug when avoiding pushing and pulling the dispensing needle head, avoid producing rubber granule and block up needle tubing 2, make absorption or injection of liquid medicine more smooth and easy, prevent to pollute the liquid medicine, reduce the liquid medicine waste, reduce the repetitive labor that personnel dispensed medicine again; the intercommunicating pore 21 can automatically balance the air pressure inside and outside the medicine bottle during puncturing, does not need to exhaust or bleed the inside of the medicine bottle manually and independently before and after absorbing or injecting liquid medicine, simplifies the medicine dispensing operation and improves the medicine dispensing efficiency.

Preferably, the width of the aperture of the communication hole 21 is 0.1 to 0.2 mm; not only can avoid the local extrusion of the sealing rubber plug into the intercommunicating pore 21 to generate rubber particles, but also can ensure the normal absorption or injection of the dispensing needle head, and reduce the processing difficulty.

Preferably, the axial length of the communication hole 21 from the end close to the needle point 3 to the end far from the needle point 3 is 1-2mm larger than that of the sealing rubber plug; not only can guarantee that the intercommunicating pore 21 can balance the air pressure in the medicine bottle, but also can avoid the intercommunicating pore 21 from overlong to influence the strength of the needle tube 2, thereby increasing the processing cost.

Specifically, the communication hole 21 is formed by laser processing; the edge of the intercommunicating pore 21 formed by laser processing is smooth and mellow, so that the sealing rubber plug is prevented from being scraped; meanwhile, the laser processing can accurately control the size of the communicating hole 21.

Further, referring to fig. 1 to 6, as a specific embodiment of the dispensing needle of the present invention, a plurality of communication holes 21 are provided, and the plurality of communication holes 21 are uniformly distributed around the central axis of the needle tube 2; the channel for sucking or injecting the liquid medicine is added, so that the liquid medicine can be sucked or injected quickly, and the dispensing efficiency is improved.

Further, please refer to fig. 1 and fig. 2 together, as a specific embodiment of the dispensing needle of the present invention, the communication hole 21 is a slit hole; the channel for sucking or injecting the liquid medicine is enlarged, and the flow of the liquid medicine is improved; the air pressure in the medicine bottle can be balanced, the structure is simple, and the processing is convenient.

Preferably, the length direction of the slit hole is parallel to the central axis of the needle tube 2; strengthen the intensity of needle tubing 2, reduce the processing degree of difficulty, the processing of being convenient for.

Further, please refer to fig. 5 and fig. 6 together, as another embodiment of the dispensing needle of the present invention, the communication hole 21 is a row of axially arranged micropores; further avoiding the partial extrusion of the sealing rubber plug into the communicating hole 21 and preventing the rubber particles from blocking the needle tube 2 and polluting the liquid medicine.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The syringe needle of making up a prescription, including the needle tubing, set firmly in the needle tube seat of needle tubing one end with set firmly in the needle point of the needle tubing other end, its characterized in that: the peripheral wall of one end of the needle tube close to the needle point is provided with a communicating hole; the intercommunicating pore will the inner chamber and the external intercommunication of needle tubing, the pore width of intercommunicating pore is not more than 0.2mm, the intercommunicating pore is from being close to the one end of needle point is to keeping away from the axial length of the one end of needle point is greater than the axial length of the rubber buffer that seals of medicine bottle.

2. A dispensing needle according to claim 1, wherein: the width of the pore of the communicating pore is 0.1-0.2 mm.

3. A dispensing needle according to claim 1, wherein: the needle tube is characterized in that the needle tube is provided with a plurality of communicating holes which are uniformly distributed around the central shaft of the needle tube.

4. A dispensing needle according to claim 1, wherein: the communicating hole is a slit hole.

5. A dispensing needle according to claim 4, wherein: the length direction of the slit hole is parallel to the central axis of the needle tube.

6. A dispensing needle according to claim 1, wherein: the communicating holes are a row of micropores which are axially arranged.

7. A dispensing needle according to claim 1, wherein: the axial length of intercommunicating pore from one end near the needle point to one end far away from the needle point is 1-2mm greater than that of the sealing rubber plug.