CN211022994U

CN211022994U - Artery puncture needle

Info

Publication number: CN211022994U
Application number: CN201921468299.8U
Authority: CN
Inventors: 孙树俊; 陈向东; 林云; 夏海发
Original assignee: Union Hospital Tongji Medical College Huazhong University of Science and Technology
Current assignee: Tongji Medical College of Huazhong University of Science and Technology; Union Hospital Tongji Medical College Huazhong University of Science and Technology
Priority date: 2019-09-03
Filing date: 2019-09-03
Publication date: 2020-07-17
Anticipated expiration: 2029-09-03

Abstract

The utility model discloses an artery puncture needle, relating to the technical field of medical instruments. Including the pjncture needle main part, set up with the blood storage ware of pjncture needle tail end still including cup jointing the setting and be in sleeve device in the pjncture needle main part, sleeve device is including being used for cup jointing sleeve pipe in the pjncture needle main part is in with the setting sleeve pipe tail end be used for connecting to fix the cannula seat of the one end of blood storage ware. The utility model discloses a needle body opening sets up in side, and the cover pipe box is established on the needle tubing, can judge that sleeve pipe and needle body have all entered into the blood vessel when flowing blood in the blood storage ware in, convenient follow-up sleeve pipe of keeping somewhere carries out follow-up medical treatment operation, and because the utility model discloses simple structure is relatively, and the feasible thin some relatively under the prerequisite of guaranteeing structural strength is adapted to the fine blood vessel of infant, and the practicality is stronger.

Description

Artery puncture needle

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to an artery puncture needle.

Background

The blood pressure is the most common index for monitoring the hemodynamics of patients in clinical anesthesia, and comprises noninvasive blood pressure monitoring (such as cuff pressure) and invasive blood pressure monitoring (such as arterial puncture connecting transducer blood pressure monitoring), wherein the invasive blood pressure monitoring can continuously and accurately reflect the hemodynamics state of the patients in real time, and is an indispensable monitoring and treatment guiding means for critical patients and patients in operation rescue and treatment. Peripheral arteries such as a radial artery, an instep artery, a brachial artery, a femoral artery, an axillary artery and a subclavian artery can be selected for arterial puncture, the radial artery and the instep artery which are shallow in position surface, relatively fixed and easy to touch are usually selected for puncture to monitor blood pressure, but a doctor with insufficient experience or a puncture object is a child patient, the failure rate is high, more trauma is undoubtedly brought to the patient, and medical expenses are increased.

The main reason is that the blood inlet at the front end of the metal puncture needle of the prior puncture trocar commonly used in clinic is about 2 mm longer than the front end of the cannula, when the blood return of the blood storage device occurs, the blood storage device can only prompt that the front end of the metal puncture needle has punctured into the artery or even has punctured the artery, but the position of the front end of the plastic cannula cannot be known, the front end of the plastic cannula cannot be punctured into the artery, the front end of the metal puncture needle can be in the artery or can be punctured into the artery along with the steel needle, the cannula can be successfully placed only under the condition that the front end of the plastic cannula is in the artery, and the cannula placement fails. Because the blood vessel of the infant is thinner, the safety range for ensuring that the front ends of the steel needle and the sleeve are positioned in the artery during the arterial puncture is narrow, the failure rate of the arterial puncture tube placement is higher, and the infant is particularly suitable for the infant. In addition, the metal steel needle opening of the puncture trocar commonly used in clinic at present is positioned at the foremost end of the steel needle, and the blood reservoir connected with the steel needle has no blood return phenomenon because the skin and subcutaneous tissues block the steel needle opening in the process of arterial puncture, so that the puncture trocar position cannot be accurately judged to cause puncture failure.

Therefore, how to accurately judge the position of the sleeve in the blood vessel and solve the problem of blockage of the puncture steel needle in the process of arterial puncture has great significance for improving the success rate of arterial puncture. Based on the technical problem, the artery puncture needle capable of preventing the puncture steel needle from being blocked and accurately judging the position of the sleeve is provided.

An artery puncture needle disclosed in patent No. 201721512482.4 solves the technical problems of preventing the blockage of the metal puncture needle and the influence of the extrusion of the outer sleeve on the monitoring. Actually, the specific structure of the material can be found as follows: because the opening of the needle body is arranged on the side wall conical surface of the sharp end of the puncture cone of the needle body, in the actual puncture operation process, the sharp end of the cone is used as the first part for puncturing the human tissue and entering the blood vessel, the human tissue can be firstly propped open by the sharp end of the cone in the pushing process of the needle body so as to be convenient for the needle body to slide in, and further the sharp end of the cone is promoted to enter the blood vessel, when the opening at the sharp end of the cone enters the human tissue along with the sharp end of the cone, because the force applied to the sharp end of the cone in the puncture process can be larger than the force applied to the needle tube part, the opening arranged at the sharp end of the cone has higher possibility of scraping the human tissue, and still can scrape part of the human tissue to enter the inside of the needle tube, so that the phenomenon that the needle tube is blocked by the human tissue occurs, therefore, the performance, blood can flow into from the point crevasse, and the position of the sleeve can not be effectively judged.

SUMMERY OF THE UTILITY MODEL

The utility model provides an artery puncture needle, the syringe needle department of its pjncture needle main part does not set up the opening, but set up the lateral wall opening in the syringe needle lateral wall department of pjncture needle main part, make artery blood flow in from the lateral wall opening part when the puncture, when blood flows in from the lateral wall opening part and stores up the blood ware, can confirm that the sleeve pipe successfully puts into intravascular, and this device structure is simple relatively, can make the needle body of smaller size under the prerequisite of guaranteeing device structural strength, be adapted to the blood vessel thickness degree of children, in order to solve above-mentioned technical problem.

The utility model provides a technical scheme of above-mentioned problem is: the utility model provides an artery puncture needle, including the pjncture needle main part, set up with the blood reservoir of pjncture needle tail end still is in including cup jointing the setting sleeve device in the pjncture needle main part, sleeve device is including being used for cup jointing sleeve pipe in the pjncture needle main part is in with the setting sleeve pipe tail end be used for zonulae occludens in the casing seat of the one end of blood reservoir, still including setting up first lateral wall opening on the body lateral wall of the nearly circular cone point department of the puncture end of pjncture needle main part.

Preferably, the puncture end surface of the puncture needle body is provided with a conical tip structure without an opening.

Preferably, a cannula opening for exposing the puncture needle body is arranged at the end face of the cannula.

Preferably, the cannula opening includes a cannula end opening for passage of the conical tip of the introducer needle and a cannula sidewall opening opposite the first sidewall opening.

Preferably, the ferrule end face opening may be disposed in a horizontal orientation to correspondingly expose the conical tip structure and the ferrule side wall opening may be disposed in a vertical orientation to correspondingly expose the first side wall opening.

Preferably, the spigot end face opening and the spigot side wall opening are also arranged in an inclined plane to ensure that the partial opening areas overlap to combine into a large end face opening to simultaneously expose the conical tip structure and the first side wall opening.

The utility model has the advantages that: the utility model discloses a side sets up first lateral wall open-ended pjncture needle main part and implements the puncture operation, can effectively avoid appearing the problem appearance that human tissue blockked up the puncture needle pipe at the arteriopuncture in-process. In addition, a sleeve is sleeved on the puncture needle main body, so that the puncture needle main body can be conveniently drawn out after puncture, and then the sleeve is kept in place, so that subsequent medical operations such as drug injection and the like can be conveniently carried out. The tail end of the sleeve is provided with a sleeve seat which can be used for being connected with the transducer for measuring blood pressure. The blood storage device can be used for collecting blood, and the puncture end face of the puncture needle main body is of a conical tip structure, so that puncture operation is facilitated. The end face of the sleeve is provided with a sleeve end face opening and a sleeve side wall opening which are used for exposing the puncture needle main body, wherein the sleeve end face opening exposes the conical tip structure of the puncture needle main body, the sleeve side wall opening exposes the first side wall opening of the puncture needle main body, and the arrangement modes of the sleeve side wall opening and the sleeve end face opening are divided into two types: one is separately arranged for respectively exposing the cone tip structure and the first side wall opening, and the other is that the sleeve side wall opening and the sleeve end face opening are obliquely arranged at the port of the sleeve in an acute angle, so that the sleeve side wall opening and the sleeve end face opening have partial areas overlapped to form a combined end face opening capable of simultaneously exposing the cone tip structure and the first side wall opening. The end face opening structure is high in flexibility, the device is beneficial to judging whether the sleeve enters the arterial blood vessel or not, and meanwhile the device has the advantages of being simple in structure, and capable of being manufactured when being suitable for puncture operation of children. Because the puncture structure of the device only has two structures of the sleeve and the puncture needle main body, the puncture diameter of the device can be reduced to the greatest extent under the condition of ensuring the structural strength so as to be suitable for the relatively slender blood vessels of children.

Drawings

FIG. 1 is a schematic view of the overall structure of an arterial puncture needle according to an embodiment of the present invention;

fig. 2 is a schematic view of the overall structure of an arterial puncture needle according to another embodiment of the present invention.

1-puncture needle body, 11-conical tip structure, 12-first side wall opening, 2-blood reservoir, 3-cannula device, 31-cannula, 32-cannula holder, 41-cannula end opening, 42-cannula side wall opening.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention and the technical solutions in the prior art, the following description will explain specific embodiments of the present invention with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and for a person skilled in the art, other drawings and other embodiments can be obtained without inventive effort, and the invention is not limited to this example.

Referring to fig. 1 and fig. 2, an artery puncture needle according to an embodiment of the present invention includes a puncture needle main body 1, a blood reservoir 2 disposed at a tail end of the puncture needle, and a cannula device 3 sleeved on the puncture needle main body 1, wherein the cannula device 3 includes a cannula 31 sleeved on the puncture needle main body 1 and a cannula holder 32 disposed at a tail end of the cannula 31 and used for being tightly connected to one end of the blood reservoir 2. In this embodiment, the cannula holder 32 abuts against one end of the blood reservoir 2, and after the puncture needle body 1 is inserted into a blood vessel, the puncture needle body 1 is taken out by rotation, and the cannula device 3 is left, so that the phenomenon that the cannula device 3 slides to prevent the cannula device 3 from entering the blood vessel during the puncture of the puncture needle body 1 can be prevented. The puncture end face of the puncture needle main body 1 is provided with a conical tip structure 11 without an opening, so that the puncture performance of the puncture needle main body 1 can be greatly enhanced.

In this embodiment, the puncture needle further comprises a first side wall opening 12 arranged on the side wall of the tube body near the conical tip of the puncture end of the puncture needle body 1, after the puncture needle body 1 enters the blood vessel, blood flows into the blood reservoir 2 through the first side wall opening 12, and the problem that the blood pressure of the human tissue in the arterial blood vessel enters the puncture needle body 1 and then blocks the puncture needle body 1 is avoided to a great extent. Moreover, when the blood flows into the blood reservoir 2 from the first sidewall opening 12, it is possible to confirm that the tip of the cannula 31 has entered the blood vessel at the same time, and prevent the occurrence of a medical accident in which the puncture needle body 1 has penetrated the blood vessel but the cannula 31 has not entered the blood vessel and the doctor has not determined.

The end face of the sleeve 31 is provided with a sleeve opening for exposing the puncture needle body 1. The cannula openings include a cannula end face opening 41 for the conical tip of the piercing needle to pass through and a cannula sidewall opening 42 opposite the first sidewall opening 12. The spigot end face opening 41 can be disposed in a horizontal orientation to correspondingly expose the conical tip structure 11 and the spigot side wall opening 42 can be disposed in a vertical orientation to correspondingly expose the first side wall opening 12. The spigot end face opening 41 and the spigot side wall opening 42 can also be arranged in an inclined plane to ensure that the partial open areas overlap to combine into a large end face opening to simultaneously expose the conical tip structure 11 and the first side wall opening 12. The end face opening can not only allow the conical tip structure 11 to penetrate through, but also expose the first sidewall opening 12. The selection of the two embodiments can be determined according to the puncture angle of the needle body when the needle body is inserted into the blood vessel in actual operation. So that the device has relatively high applicability.

Where not mentioned above, are applicable to the prior art

Specific embodiments of the present invention have been described above in detail. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by logical analysis, reasoning or limited experiments in the prior art, which are already known to those skilled in the art, should be within the scope of protection defined by the claims.

Claims

1. An arterial puncture needle, characterized in that: including pjncture needle main part (1), set up with blood reservoir (2) of pjncture needle tail end still including cup jointing the setting and being in bushing apparatus (3) on pjncture needle main part (1), bushing apparatus (3) are including being used for cup jointing sleeve pipe (31) and the setting on pjncture needle main part (1) are in for zonulae occludens of sleeve pipe (31) tail end be in cannula seat (32) of the one end of blood reservoir (2), still including setting up first lateral wall opening (12) on the body lateral wall of the nearly circular cone tip department of the puncture end of pjncture needle main part (1).

2. An arterial puncture needle according to claim 1, characterized in that: the puncture end surface of the puncture needle main body (1) is provided with a conical tip structure (11) without an opening.

3. An arterial puncture needle according to claim 2, characterized in that: the end surface of the sleeve (31) is provided with a sleeve opening for exposing the puncture needle main body (1).

4. An arterial puncture needle according to claim 3, characterized in that: the cannula openings include a cannula end face opening (41) for passage of the conical tip of the piercing needle and a cannula sidewall opening (42) opposite the first sidewall opening (12).

5. An arterial puncture needle according to claim 4, characterized in that: the spigot end face opening (41) can be disposed in a horizontal orientation to correspondingly expose the conical tip structure (11) and the spigot side wall opening (42) can be disposed in a vertical orientation to correspondingly expose the first side wall opening (12).

6. An arterial puncture needle according to claim 5, characterized in that: the spigot end face opening (41) and the spigot side wall opening (42) may also be arranged in an inclined plane to ensure that the partially open areas overlap to combine into a large end face opening to simultaneously expose the conical tip structure (11) and the first side wall opening (12).