CN216566248U

CN216566248U - Novel central vein puncture needle

Info

Publication number: CN216566248U
Application number: CN202120484930.4U
Authority: CN
Inventors: 黄葱葱; 连春微; 李军; 吴碧云
Original assignee: Second Affiliated Hospital and Yuying Childrens Hospital of Wenzhou Medical University
Current assignee: Second Affiliated Hospital and Yuying Childrens Hospital of Wenzhou Medical University
Priority date: 2021-03-06
Filing date: 2021-03-06
Publication date: 2022-05-20
Anticipated expiration: 2031-03-06

Abstract

The utility model discloses a novel central venous puncture needle, which comprises a puncture needle body, wherein the puncture needle body is sequentially composed of a needle seat, a needle body and a needle head, one end of the needle head, which is far away from the needle body, is provided with a puncture needle tip part, a blood return port is arranged between the puncture needle tip part and the needle body, and the blood return port is arranged on one side of the puncture needle tip part. The thickness of the puncture needle tube wall can be reduced, and the rigidity of the puncture needle tube wall can be kept. The needle is modified to make the vein wall more easily punctured rather than stressed.

Description

Novel central vein puncture needle

Technical Field

The utility model relates to the technical field of puncture needles, in particular to a novel central venous puncture needle.

Background

Central venous catheterization plays a central role in mass blood transfusion, rescue of critically ill patients and chemotherapy drug infusion.

The puncture success rate is related to the skill level of operators and the vein dissection deformation and filling degree of patients. The previous clinical experience and literature reports consistently suggest that the puncture success rate of the 22G fine needle is higher than that of the coarse needle. Since the thick needle (guide puncture needle) needs to be convenient for the guide steel wire to smoothly enter, the caliber of the thick needle is 18G, the vein wall is easily crushed due to the thick cross section of the thick needle, but the thick needle does not puncture the vein wall, the thick needle frequently crushes the tissues of the front wall and the back wall of the vein to be pressed to deeper parts, and finally the front wall and the back wall are punctured and penetrated. Therefore, the puncture needle is easy to cause larger damage, increases the puncture difficulty and reduces the puncture success rate.

Disclosure of Invention

In view of this, the utility model provides a novel central venous puncture needle.

In order to achieve the purpose, the utility model provides the following technical scheme:

including the pjncture needle body, the pjncture needle is originally constituteed by body needle body and syringe needle, the syringe needle is kept away from needle body one end and is set up the pjncture needle point portion, set up the mouth of returning blood between pjncture needle point portion and the needle body, the setting of the mouth of returning blood is in pjncture needle point portion one side, the central axis in the needle body divide into the cross-section of puncture needle point left part and puncture needle point right part, the central axis of needle body and the angle between the central axis of puncture needle point left part and the puncture needle point right part more than or equal to angle between the central axis and the puncture needle point right part.

Preferably, a sharp part is formed between the blood returning opening and the puncture needle tip, and the sharp part is arranged at the right part of the puncture needle tip.

Preferably, the angle of the puncture needle tip is 40 degrees, and the angle between the central axis and the left part of the puncture needle tip is larger than the angle between the central axis and the right part of the puncture needle tip. Preferably, the needle head is of a pen-point structure, and the opening of the blood return port is semicircular.

Preferably, the internal diameter of the blood return port is 0.84mm, the external diameter of the blood return port is 1.14mm, and the external diameter of the needle body is 1.14 mm.

The utility model has the beneficial effects that: the utility model is provided with a nib type needle head, a puncture needle with the outer diameter of 1.14mm and the inner diameter of 0.84 mm. The thickness of the puncture needle tube wall can be reduced, and the rigidity of the puncture needle tube wall can be kept. The needle is modified to make the vein wall more easily punctured rather than stressed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the needle of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The utility model will be further described with reference to the accompanying drawings.

The utility model provides the following technical scheme:

as shown in the attached drawing 1, the utility model discloses a novel central venous puncture needle, which comprises a puncture needle body, wherein the puncture needle body consists of a needle body 1 and a needle head 2, one end, far away from the needle body 1, of the needle head 2 is provided with a puncture needle tip part 3, a blood return port 4 is arranged between the puncture needle tip part 3 and the needle body 1, and the blood return port 4 is arranged on one side of the puncture needle tip part 3. Specifically, through seting up back blood mouth 4 on syringe needle 2 for form a sharp portion between blood mouth 4 and the pjncture needle point portion 3 of returning blood, thereby make syringe needle 2 puncture the blood vessel more easily, and return blood mouth 4 and be in on syringe needle 2, can return blood more easily, need not to continue to pierce the blood vessel with syringe needle 2, thereby prevent the oppression of puncture to blood vessel.

Furthermore, a sharp part 7 is formed between the blood returning port 4 and the puncture needle tip part 3, the section of the puncture needle tip is divided into a puncture needle tip left part 5 and a puncture needle tip right part 6 by the central axis in the needle body 1, and the sharp part 7 is arranged at the puncture needle tip right part 6. Specifically, the setting of sharp department 7 can make syringe needle 2 puncture the blood vessel more easily, prevents to cause patient's discomfort because the problem of angle leads to syringe needle 2 can't easily puncture the blood vessel, takes place medical and is troublesome the phenomenon.

Further, the angle of the puncture needle tip 3 is 40 degrees, and the angle between the central axis and the puncture needle tip left part 5 is larger than the angle between the central axis and the puncture needle tip right part 6. Specifically, through using the both sides angle that the axis was accurate 3 with the puncture needle point portion to set up to the difference, can make 2 more acutely of syringe needle, pierce the blood vessel easily and treat. In this embodiment, the angle of the needle tip left portion 5 is 25 ° and the angle of the needle tip right portion 6 is 15 °.

Further, the needle head 2 is of a pen point type structure, and the opening of the blood returning port 4 is semicircular. Specifically, the syringe needle 2 of nib formula structure can be better punctures the blood vessel and returns blood, returns the semicircular setting of opening of blood mouth 4, can make the effect of returning blood better.

Further, the internal diameter of the blood returning port 4 is 0.84mm, the external diameter of the blood returning port 4 is 1.14mm, and the external diameter of the needle body 1 is 1.14 mm. Specifically, the arrangement can reduce the thickness of the tube wall of the needle body 1 and keep the rigidity of the tube wall, thereby achieving better puncture effect and treatment effect.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A novel central vein puncture needle is characterized in that: including the pjncture needle body, the pjncture needle is originally constituteed by body needle body and syringe needle, the syringe needle is kept away from needle body one end and is set up the pjncture needle point portion, set up the mouth of returning blood between pjncture needle point portion and the needle body, the setting of the mouth of returning blood is in pjncture needle point portion one side, the central axis in the needle body divide into the cross-section of puncture needle point left part and puncture needle point right part, the central axis of needle body and the angle between the central axis of puncture needle point left part and the puncture needle point right part more than or equal to angle between the central axis and the puncture needle point right part.

2. A novel central venipuncture needle according to claim 1, characterized in that: a sharp part is formed between the blood return port and the puncture needle tip, and the sharp part is arranged at the right part of the puncture needle tip.

3. A novel central venipuncture needle according to claim 2 wherein: the angle of the piercing tip is 40 °.

4. A novel central venipuncture needle according to claim 1, characterized in that: the needle head is of a pen point type structure, and the opening of the blood return port is semicircular.

5. A novel central venipuncture needle according to claim 1, characterized in that: the internal diameter of returning the blood mouth is 0.84mm, the external diameter of returning the blood mouth is 1.14mm, the external diameter of needle body sets up to 1.14 mm.