CN215018628U - Safety protection device for central venous puncture needle - Google Patents

Abstract

The utility model discloses a safety device for central vein pjncture needle of central vein puncture safety protection technical field, 45 degrees central vein pjncture needles have been inserted to the oblique line on the vein, fixed being equipped with the puncture syringe needle of inserting on the vein on the central vein pjncture needle, just the overhead joint of pjncture needle is equipped with the butterfly fixer of setting outside human skin, and the alignment line position department on the central vein pjncture needle is fixed in the butterfly fixer with the alignment line of syringe needle to the puncture syringe needle on the central vein pjncture needle, guarantees that the intravascular degree of depth of central vein pjncture needle is the same with the length of the mark on the syringe needle, can guarantee that central vein pjncture needle gets into the blood vessel, the degree of depth in the tissue is unanimous with the syringe needle degree of depth, can not lead to the excessive depth, reduces the risk of deep blood vessel, nerve, tissue damage, reduces hemorrhage, pneumothorax, Nerve damage and other complications.

Description

Safety protection device for central venous puncture needle

Technical Field

The utility model relates to a central vein puncture safety protection technical field specifically is a safety device for central vein pjncture needle.

Background

When corrosive medicine, parenteral nutrition or liquid medicine therapy with osmotic pressure exceeding 900mOsm/L is required to be continuously administered to a patient, or when a central venous catheter is kept to be convenient for draining hydrothorax and celiac fluid, an appropriate central venous blood access device is selected according to the indication for puncture therapy, the central venous blood access device which is commonly used in clinic comprises a central venous catheter which is placed through an internal jugular vein, a subclavian vein and a femoral vein, and in 1953, Dr.SvenSeldinger firstly describes the currently widely applied blood vessel puncture technology: guidewire-guided percutaneous puncture techniques (percutaneous puncture techniques), CVC catheterization using the Seldinger technique requires knowledge of some anatomical landmarks, but anatomical landmarks vary in some cases, such as the internal jugular vein, which is typically 10-20% variable; the variation reduces the success rate of puncture and increases the incidence rate of complications, only a 5ml injector in the prior general disposable central venous catheter puncture package uses a trial puncture needle head, a puncture needle positioning device is not provided, trial puncture positioning is required during tube placement, the entering depth of the central venous puncture needle is determined according to the length of the trial puncture needle, the puncture needle is easy to enter too deep due to factors such as mental stress, hand trembling, inexperience and the like of an operator, and therefore the puncture needle can be prevented from entering too deep by positioning the length of the puncture needle according to the depth of a probe, and therefore, a safety protection device for the central venous puncture needle is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a safety device for central vein pjncture needle to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a safety device for central vein pjncture needle, includes the syringe to human body is for relying on, there are artery and vein in the human body, 45 degrees insert central vein pjncture needles on the vein to one side, fixed mounting has the puncture needle head of inserting on the vein on the central vein pjncture needle, just the joint is equipped with the butterfly-shaped fixer of setting outside human skin on the puncture needle head.

Preferably, the syringe is fixedly provided with an injection needle, the length of the injection needle is smaller than that of the puncture needle, and the outer diameter of the injection needle is the same as that of the puncture needle.

Preferably, the injection needle is inserted into a vein in the human body obliquely at 45 degrees, the head turns to the opposite side at 45 degrees, and the injector is a 5ml container.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has the advantages of reasonable design, firstly, the lidocaine is extracted by the injector, the local anesthesia of the lidocaine is selected to the puncture point, the injection needle head enters into the human body to punch a skin dune, the negative pressure of the injector is kept after the blood is not pumped back, the needle is obliquely advanced by 45 degrees until the blood is pumped back into the injector, the depth of the injection needle head entering into the skin tissue is recorded, then the negative pressure is released, the injection needle head is extracted after the venous blood is determined, the depth position of the injection needle head inserted into the skin of the human body is recorded, simultaneously, the puncture point is pressed by alcohol cotton by one hand to prevent further bleeding, the central venous puncture needle is taken by the other hand, the length comparison of the tip end of the needle head is carried out with the injection needle head, on the basis of a reference line, the butterfly-shaped fixer is fixed at the alignment line position on the central venous puncture needle at the alignment line of the central venous puncture needle and the injection needle head, the intravascular depth of the central venous puncture needle is ensured to be the same as the length of the mark on the injection needle head, the central venous puncture needle is inserted to a positioning position according to the original puncture point and the original angle, and venous blood is pumped back and then enters a guide wire, a catheter is placed and a suture fixing catheter, so that the needle insertion can ensure that the depth of the central venous puncture needle entering blood vessels and tissues is consistent with the depth of an injection needle head, the central venous puncture needle cannot be too deep, the risk of damage to deep blood vessels, nerves and tissues is reduced, and complications such as bleeding, pneumothorax and nerve damage are reduced.

Drawings

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

fig. 2 is a schematic diagram of a comparison structure of the injector and the central venipuncture needle of the present invention.

In the figure: 1. a human body; 2. an artery; 3. a vein; 4. a central venous puncture needle; 5. a puncture needle head; 6. a butterfly-shaped retainer; 7. an injector; 8. an injection needle; 9. a reference line; 10. the lines are aligned.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and fig. 2, the present invention provides a technical solution: the utility model provides a safety device for central vein pjncture needle, includes syringe 7 to human body 1 is for relying on, has artery 2 and vein 3 in the human body 1, and the 45 degrees central vein pjncture needles 4 of having inserted in the slope on the vein 3, and fixed being equipped with on the central vein pjncture needle 4 inserts the puncture needle head 5 on the vein 3, and the joint is equipped with the butterfly-shaped fixer 6 of setting outside human skin on the puncture needle head 5.

Referring to the figure, an injection needle 8 is fixedly assembled on the injector 7, the length of the injection needle 8 is smaller than that of the puncture needle 5, and the outer diameter of the injection needle 8 is the same as that of the puncture needle 5;

referring to the figure, the injection needle 8 is inserted into the vein 3 in the human body 1 in an inclined way at 45 degrees, the head turns to the opposite side at 45 degrees, and the injector 7 is a 5ml container;

the working principle is as follows: when the device is used, taking a central venous puncture catheter as an example, firstly selecting a right internal jugular vein as a target catheter blood vessel, then ensuring that a patient takes a supine position, the head turns to 45 degrees at the opposite side, the neck is short, the shoulder and the neck are raised to enable the head to lean backwards, carrying out conventional disinfection and puncture on the skin and spreading a towel, opening a disposable sterile central venous catheter puncture bag, firstly extracting lidocaine by using an injector 7 with the capacity of 5ml, selecting local anesthesia of the lidocaine at the puncture point, injecting a skin dune when the injection needle 8 enters the human body 1, keeping the negative pressure of the injector 7 after no blood is extracted, carrying out needle insertion at 45 degrees obliquely until blood returns in the injector 7, recording the depth of the injection needle 8 entering skin tissues, then releasing the negative pressure, extracting the injection needle 8 after venous blood is determined, recording the depth position of the injection needle 8 inserted in the skin of the human body 1, simultaneously pressing the puncture point by using alcohol cotton with one hand, preventing further bleeding, taking the central venous puncture needle 4 by the other hand, comparing the length of the tip of the needle head with that of the injection needle 8, fixing a butterfly-shaped fixer 6 at the position of an alignment line 10 on the central venous puncture needle 4 at the positions of a puncture needle head 5 on the central venous puncture needle 4 and the alignment line 10 of the injection needle head 8 on the basis of a reference line 9 to ensure that the intravascular depth of the central venous puncture needle 4 is the same as the length of a mark on the injection needle 8, inserting the central venous puncture needle 4 to a positioning position according to an original puncture point and an original angle, and after venous blood is pumped back, entering a guide wire, a catheter and a suture fixing catheter, so that the needle can ensure that the central venous puncture needle 4 enters a blood vessel and the depth of the tissue are the same as the depth of the injection needle head 8, cannot cause over-depth, reduce the risk of deep blood vessel, nerve and tissue injury, and reduce the risk of bleeding and pneumothorax, Nerve damage and other complications.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (3)

1. The utility model provides a safety device for central vein pjncture needle, includes syringe (7) to human body (1) is the basis, there are artery (2) and vein (3) in human body (1), its characterized in that: the vein (3) is obliquely inserted by 45 degrees into a central vein puncture needle (4), a puncture needle head (5) inserted into the vein (3) is fixedly assembled on the central vein puncture needle (4), and a butterfly-shaped fixer (6) arranged outside the skin of a human body is assembled on the puncture needle head (5) in a clamping manner.

2. A safety shield apparatus for a central venipuncture needle as claimed in claim 1 wherein: an injection needle (8) is fixedly assembled on the injector (7), the length of the injection needle (8) is smaller than that of the puncture needle (5), and the outer diameter of the injection needle (8) is the same as that of the puncture needle (5).

3. A safety shield apparatus for a central venipuncture needle as claimed in claim 1 wherein: the injection needle (8) is obliquely inserted into a vein (3) in the human body (1) at an angle of 45 degrees, the head of the injection needle is turned to the opposite side at an angle of 45 degrees, and the injector (7) is a 5ml container.

Images