Safe medical trocar allowing releasing of withdrawing member

A trocar, safe technology, applied in the field of medical devices, can solve the problems of accidental injury and infection of patients, puncture of blood vessels, infection of operators, etc.

Active Publication Date: 2018-03-13
SHANGHAI CHANGZHENG HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the whole process of infusion, the steel needle remains in the blood vessel. However, because the needle tip of the steel needle is very sharp, the patient stretches his limbs during the infusion, and the probability of being punctured by the steel needle is very high, especially for children and mental patients.
[0004] In addition, after the infusion of the infusion needle is completed, the medical staff will pull out the steel needle from the vein of the human body, and the steel needle stained with the patient's blood will be exposed outside, which will easily cause accidental injury and infection of the medical staff and the patient.
[0005] In addition, when the medical waste is reprocessed, the steel needle also has the risk of causing the operator to be infected

Method used

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  • Safe medical trocar allowing releasing of withdrawing member
  • Safe medical trocar allowing releasing of withdrawing member
  • Safe medical trocar allowing releasing of withdrawing member

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0189] medical trocar

[0190] Such as Figure 1-2 As shown, the withdrawable trocar of the present embodiment includes:

[0191] a catheter adapter 1;

[0192] An indwelling catheter 2, the indwelling catheter 2 is arranged at the front end of the catheter adapter 1;

[0193] a needle hub 3, said needle hub 3 is located inside said catheter hub 1; and

[0194] A puncture needle 4, one end of the puncture needle 4 is fixed to the needle base 3, and the puncture needle 4 and the needle base 3 are hollow structures communicating with each other.

[0195] Wherein, the trocar includes a puncture state and an indwelling state; in the puncture state, the puncture needle 4 is placed in the indwelling catheter 2 (such as figure 1 (a) shown); the trocar changes from the puncture state to the indwelling state by withdrawing the needle hub 3 . In the indwelling state, the puncture needle 4 is placed in the catheter adapter 1, wherein the needle tip of the puncture needle 4 is comple...

Embodiment 2

[0203] medical trocar

[0204] This embodiment provides a trocar with a retractable part that can fall off. The trocar in this embodiment is improved on the basis of the trocar in Embodiment 1. The main improvements are as follows:

[0205] Such as figure 1 , figure 2 , image 3 and Figure 4 As shown, in this embodiment, the needle hub 3 includes a head end part 10, a middle part 11 and a tail end part 12 connected in sequence;

[0206] Moreover, a first part 13 and a second part 24 are provided on the outer surface of the tail end part 12, and the detachment part 7 is closely attached to the tail part 12, and the front end of the detachment part 7 is provided with There is a third part 25; the third part 25 is matched with the first part 13, and the third part 25 is matched with the first part 13 so that the third part 25 is compatible with the tail part 12 tightly clamping fit; the first edge 26 of the third part 25 and the second edge 27 of the second part 24 are in ...

Embodiment 3

[0211] Needle hub and medical trocar

[0212] This embodiment describes a preferred needle hub and a medical trocar using the needle hub.

[0213] Similar to embodiment 1, this embodiment adopts Figure 5 Medical trocars with hubs shown, including:

[0214] a catheter socket;

[0215] an indwelling catheter, the indwelling catheter is arranged at the front end of the catheter adapter;

[0216] a hub 3, said hub being located inside said catheter hub; and

[0217] A puncture needle, one end of the puncture needle is fixed to the needle seat, and the puncture needle and the needle seat are hollow structures communicating with each other.

[0218]Wherein, the trocar includes a puncture state and an indwelling state; in the puncture state, the puncture needle is placed in the indwelling catheter; , from the puncturing state to the indwelling state. In the indwelling state, the puncture needle is placed in the catheter adapter, wherein the needle tip of the puncture needle is...

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PUM

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Abstract

The invention discloses a safe medical trocar allowing releasing of a withdrawing member. The safe medical trocar includes a catheter seat, an indwelling catheter, a needle seat, and a puncture needle; one end of the puncture needle is fixed on the needle seat; the puncture needle and the needle seat are of hollow structures communicating with each other; the trocar includes a puncturing state andan indwelling state; in the puncturing state, the puncture needle is placed in the indwelling catheter; in the indwelling state, the puncture needle is placed in the catheter seat; the trocar can changes into the indwelling state from the puncturing state by withdrawing the needle seat; the trocar includes a withdrawing member for pulling the needle seat so as to allow the trocar to change into the indwelling state from the puncturing state. The medical trocar can effectively prevent accidental injury, and can significantly lower the later recovery processing risk of the medical trocar.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a safe medical trocar with a detachable withdrawal part. Background technique [0002] Clinically, the medical trocar is a widely used medical device. Taking the commonly used disposable intravenous infusion needle as an example, it is mainly composed of a protective cap, a steel needle, a needle seat, a needle wing, and a connecting tube. [0003] When in use, the medical staff first removes the protective cap covering the steel needle, and then uses the steel needle to perform venous blood vessel puncture, sees blood return and performs infusion after confirming that the puncture is successful. During the whole process of infusion, the steel needle remains in the blood vessel. However, because the needle tip of the steel needle is very sharp, the patient stretches his limbs during the infusion, and the probability of the blood vessel being punctured by the steel needle is very h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/158
CPCA61M5/158
Inventor 邹最马宇尘黄荧姚雪雅陈原丽
Owner SHANGHAI CHANGZHENG HOSPITAL
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