CN210056178U

CN210056178U - Quick central vein catheterization needle

Info

Publication number: CN210056178U
Application number: CN201920488658.XU
Authority: CN
Inventors: 梁胜
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-11
Filing date: 2019-04-11
Publication date: 2020-02-14
Anticipated expiration: 2029-04-11

Abstract

The utility model relates to a quick central venous catheterization needle, which comprises an injector, a central venous catheter, a puncture inner needle and a communicating device, wherein the side surface of the communicating device close to the upper end is provided with an injector joint, the inside of the communicating device is provided with a transfusion channel, the puncture inner needle is connected with the side surface of the communicating device close to the lower end, the injector joint is communicated with the puncture inner needle through the transfusion channel, and the transfusion channel is also provided with a communicating switch; a holding part connected with the side surface of the communicator is also arranged above the puncture inner needle, and the lower side of the front end of the holding part is connected with a catheter guider; the injector is connected with the communicator through the injector connector, and the central venous catheter passes through the catheter guider and is sleeved outside the puncture inner needle. The utility model simplifies and optimizes the operation steps, effectively saves the operation time and wins precious time for the actual rescue work; in addition, because the utility model discloses a puncture inner needle is less, and the puncture is easy, greatly improves the puncture success rate.

Description

Quick central vein catheterization needle

Technical Field

The utility model relates to a medical instrument, in particular to a central vein catheterization needle.

Background

The vein catheterization is a process of puncturing to a corresponding vein through the body surface and placing a deep vein catheter, is an indispensable means for intensive care wards, major operations and treatment of critically ill patients, and is mainly used for: the method is used for rescuing critical patients with various cardiovascular operations under extracorporeal circulation, non-extracorporeal circulation operations with large hemodynamic changes during estimation operations, severe traumatic shock, acute circulatory failure and the like, patients needing long-term high nutrition treatment or intravenous antibiotic treatment, patients needing temporary or permanent cardiac pacemakers through veins, continuous hemofiltration and patients needing central vein monitoring for various reasons.

The traditional central venipuncture method comprises the following steps:

1. locally anaesthetizing a puncture point by using a five-milliliter injector, repeatedly probing by using five milliliters of injection, probing to the approximate direction position depth of a central vein and the like;

2. changing the 9 # puncture long needle to connect another 5 ml syringe, keeping the negative pressure, and puncturing again;

3. puncturing the target vein again, fixing the puncture needle by the negative pressure-maintaining injector with blood return, inserting the guide steel wire about 20-30 cm, fixing the steel wire, and then pulling out the puncture needle;

4. inserting a dilator over the guidewire to dilate surrounding tissues, including skin, subcutaneous tissue, and central vein;

5. fixing the guide wire, withdrawing the dilator, inserting the central venous catheter, and placing the central venous catheter into a target central vein;

6. the guide steel wire is pulled out, the needle is sewn on the skin to fix the catheter, and the auxiliary materials are covered to finish the operation.

It can be seen that the above procedure has the following drawbacks: 1. the puncture step is complicated, and the preparation work is complex; 2. the large-size needle head has large damage after repeated puncture; 3. the large-size needle head is not easy to puncture successfully; 4. when the guide wire is placed in, the puncture needle is easy to shift and exit from the central vein, so that puncture failure is caused.

Disclosure of Invention

The utility model aims at solving the problems existing in the prior art, and provides a quick central vein catheterization needle which has simplified operation steps, high puncture success rate and can effectively save the operation time.

The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: a rapid central venous catheterization needle comprises an injector, a central venous catheter and a puncture inner needle; the device is characterized by further comprising a communicating device, wherein an injector connector is arranged on the side surface of the communicating device close to the upper end, a transfusion channel is arranged in the communicating device, the puncture inner needle is connected with the side surface of the communicating device close to the lower end, the injector connector is communicated with the puncture inner needle through the transfusion channel, and a communicating switch is further arranged on the transfusion channel; a holding part connected with the side surface of the communicator is also arranged above the puncture inner needle, and the lower side of the front end of the holding part is connected with a catheter guider; the injector is connected with the communicator through the injector connector, and the central venous catheter passes through the catheter guider and is sleeved outside the puncture inner needle.

The utility model discloses a further technical scheme is: the guide pipe guider comprises a guider main body and a positioning part connected with the guider main body, a guide hole is formed in the middle of the guider main body, a connecting groove with the cross section identical to that of the positioning part is formed in the front end and the rear side of the holding part in an extending mode, and the positioning part is arranged in the connecting groove in a sliding mode.

The utility model discloses a further technical scheme is: the front end of the holding part is provided with anti-skid grains; the needle head of the central venous catheter is blunt; the length L1 of the puncture inner needle is greater than the length L2 of the central venous catheter; and scale marks are arranged on the outer side of the central venous catheter.

The utility model discloses a further technical scheme is: and a negative pressure spring is arranged on the outer side of the push rod of the injector, one end of the negative pressure spring is pressed against the tail part of the needle cylinder of the injector, and the other end of the negative pressure spring is pressed against the tail part of the push rod of the injector.

The utility model discloses a quick central vein catheterization needle is owing to adopt above-mentioned structure, compares with traditional method when carrying out vein catheterization, saves probe probing, seal wire and puts into, expands operation steps such as skin for operation steps are simplified and optimized, and the effective operating time that saves wins valuable time for the actual rescue work; in addition, because the utility model discloses a puncture inner needle is less, and the puncture is easy, greatly improves the puncture success rate.

The fast central venous catheterization needle of the utility model is further described with the attached drawings and the embodiments.

Drawings

FIG. 1 is a schematic structural view of the rapid central venous catheterization needle of the present invention;

FIG. 2 is a schematic view of the configuration of the connection of the inner piercing needle, the holding portion and the communicating vessel;

FIG. 3 is a schematic view of the construction of a central venous catheter;

FIG. 4 is a schematic view of the structure of the syringe;

FIG. 5 is a side view of the catheter introducer attached to the handle;

fig. 6 is a side view of the grip portion;

FIG. 7 is a front view of the catheter guide;

FIG. 8 is a side view of the catheter guide;

the reference numbers illustrate: 1-injector, 11-push rod, 12-syringe, 13-negative pressure spring, 2-communicator, 21-injector joint, 22-transfusion channel, 3-communicator, 4-central venous catheter, 41-tube gripper, 42-scale mark, 5-catheter guider, 51-guider main body, 52-positioning part, 53-guide hole, 6-holding part, 61-connecting groove and 7-puncture inner needle.

Detailed Description

As shown in fig. 1 to 8, the utility model relates to a rapid central venous catheterization needle, which comprises an injector 1, a central venous catheter 4, a puncture inner needle 7 and a communicating vessel 2.

The utility model discloses a side that UNICOM's ware 2 leaned on the upper end is provided with syringe joint 21, and 2 inside infusion passageways 22 that are equipped with of UNICOM's ware, needle 7 is connected by the side of lower extreme in the puncture with UNICOM's ware 2, and syringe joint 21 and puncture inner needle 7 pass through infusion passageways 22 UNICOM, still are equipped with UNICOM's switch 3 on the infusion passageway 22.

A holding part 6 connected with the side surface of the communicating device 2 is also arranged above the puncture inner needle 7, and anti-skid grains are arranged at the front end of the holding part 6; in addition, a catheter guide 5 is connected to the lower side of the front end of the holding part 6, the catheter guide 5 comprises a guide main body 51 and a positioning part 52 connected with the guide main body 51, a guide hole 53 is formed in the middle of the guide main body 51, a connecting groove 61 with the cross section consistent with that of the positioning part 52 extends from the front end of the holding part 6 to the rear side, and the positioning part 52 is arranged in the connecting groove 61, so that the catheter guide 5 is connected with the holding part 6.

The outside of the push rod 11 of the injector 1 of the utility model is provided with the negative pressure spring 13, one end of the negative pressure spring 13 is pressed against the tail part of the syringe 12 of the injector 1, the other end of the negative pressure spring 13 is pressed against the tail part of the push rod 11 of the injector 1, and the negative pressure spring 13 can keep the negative pressure in the syringe 12 when in use; it should be noted that the other structures of the syringe 1 of the present invention are the same as those of the prior art, and will not be described in detail herein.

When in use, the injector 1 is connected with the communicator 2 through the injector connector 21, the central venous catheter 4 passes through the catheter guider 5 and is sleeved outside the puncture inner needle 7, in the embodiment, the needle head of the central venous catheter 4 is blunt, the length L1 of the puncture inner needle 7 is larger than the length L2 of the central venous catheter 4, in addition, the outer side of the central venous catheter 4 is also provided with a scale mark 42, and the scale mark 42 can ensure that the catheterization depth can be accurately grasped during catheterization.

The utility model relates to a quick central vein catheterization needle carries out vein catheterization's operating procedure as follows:

1. conventional disinfection paving;

2. the tail part of a push rod 11 of the injector 1 is pressed down, and the communicating switch 3 is closed;

3. inserting a needle at the puncture point, and opening a communication switch 3 after the needle enters the subcutaneous part;

4. the needle is continuously inserted through the holding part 6 and slowly tested back and forth, for example, venous return blood can be immediately seen in the injector 1 after the deep vein is entered;

5. the tube holder 41 of the central venous catheter 4 is held by hand, the central venous catheter 4 is sent into a target vein, and then the puncture inner needle 7 is pulled out;

6. the needle is fixed on the skin to fix the catheter, and the catheter is applied externally to complete the operation.

Use the utility model discloses carry out vein catheterization art, operating procedure obtains simplifying and optimizing, and effectual operating time that saves wins the quality time for actual rescue work, greatly improves the puncture success rate.

The above embodiments are only preferred embodiments of the present invention, the structure of the present invention is not limited to the forms illustrated in the above embodiments, and any modifications, equivalent substitutions and the like made within the spirit and principle of the present invention should be included within the scope of the present invention.

Claims

1. A rapid central venous catheterization needle comprises an injector (1), a central venous catheter (4) and a puncture inner needle (7); the device is characterized by further comprising a communicating device (2), a syringe connector (21) is arranged on the side face, close to the upper end, of the communicating device (2), a transfusion channel (22) is arranged inside the communicating device (2), the puncture inner needle (7) is connected with the side face, close to the lower end, of the communicating device (2), the syringe connector (21) is communicated with the puncture inner needle (7) through the transfusion channel (22), and a communicating switch (3) is further arranged on the transfusion channel (22); a holding part (6) connected with the side surface of the communicating device (2) is also arranged above the puncture inner needle (7), and the lower side of the front end of the holding part (6) is connected with a catheter guider (5); the injector (1) is connected with the communicating device (2) through an injector connector (21), and the central venous catheter (4) passes through the catheter guider (5) and is sleeved outside the puncture inner needle (7).

2. The quick central venous catheter needle according to claim 1, characterized in that the catheter guide (5) comprises a guide body (51) and a positioning part (52) connected with the guide body (51), the guide body (51) is provided with a guide hole (53) in the middle, the front end of the holding part (6) extends to the rear side to be provided with a connecting groove (61) with the cross section consistent with that of the positioning part (52), and the positioning part (52) is slidably arranged in the connecting groove (61).

3. The rapid central venous catheterization needle according to claim 1, characterized in that the front end of the holding part (6) is provided with anti-skid lines.

4. The rapid central venous catheter needle as claimed in claim 1, characterized in that the needle head of the central venous catheter (4) is blunt.

5. The rapid central venous catheterization needle of claim 1, characterized in that the length L1 of the puncture inner needle (7) is greater than the length L2 of the central venous catheter (4).

6. The rapid central venous catheter needle according to claim 1, characterized in that the outside of the central venous catheter (4) is provided with scale markings (42).

7. The quick central venous catheterization needle of claim 1, characterized in that a negative pressure spring (13) is arranged outside the push rod (11) of the injector (1), one end of the negative pressure spring (13) is pressed against the tail of the syringe (12) of the injector (1), and the other end of the negative pressure spring (13) is pressed against the tail of the push rod (11) of the injector (1).