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Puncture needle assembly with core

A technology of puncture needles and components, applied in the field of cored puncture needle components, can solve problems such as arterial-portal leakage, arterial-biliary leakage, portal vein-biliary leakage, liver cutting injury, recovery safety hazards, etc., to achieve convenient puncture work , to avoid cutting damage, to avoid the effect of clogging

Pending Publication Date: 2018-11-13
THE FIRST AFFILIATED HOSPITAL OF SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hollow tubular structure can also cut the liver tissue into strips. On the one hand, this tissue can block the puncture needle, and on the other hand, it will cause cutting damage to the liver. When there are arteries and portal veins in the puncture channel, it is easy to produce arterio-portal leakage. , Artery-bile duct leakage, portal vein-bile duct leakage, etc., lead to or even aggravate postoperative complications, and bring huge safety hazards to the patient's health and postoperative recovery

Method used

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  • Puncture needle assembly with core
  • Puncture needle assembly with core
  • Puncture needle assembly with core

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] refer to Figure 1-2 , the present embodiment provides a cored puncture needle assembly 11, comprising:

[0077] External puncture needle 111 and detachable needle core 112;

[0078] The outer puncture needle 111 is provided with a cavity along its length direction for the detachable needle core 112 to penetrate;

[0079] The detachable needle core 112 can move along the length direction of the external puncture needle 111 in the cavity.

[0080] Preferably, the cored puncture needle assembly 111 further includes a guide wire 113;

[0081] The outer diameter of the guide wire 113 is smaller than the inner diameter of the cavity of the external puncture needle 111, so that after the detachable needle core 112 is pulled out, the guide wire 113 replaces the detachable needle core 112 to penetrate into the cavity.

[0082] Preferably, the outer diameter of the guide wire 113 is 0.035 inches;

[0083] The length of the guide wire 113 is 50 cm.

[0084] Preferably, the ...

Embodiment 2

[0087] refer to Figure 1-2 , this embodiment provides a cored puncture needle assembly 11, based on the above embodiments,

[0088] Preferably, the external puncture needle 111 includes a needle base 1111, a connecting tube 1112 and a needle tube 1113 connected in sequence;

[0089] The end of the needle tube 1113 facing away from the connecting tube 1112 is provided with a needle head 1114 .

[0090] Preferably, the external puncture needle 111 further includes a movable valve 1115 arranged on the needle tube 1113 and movable along the length direction of the needle tube 1113;

[0091] The movable valve 1115 is used to mark the length of the needle tube 1113 .

[0092] As mentioned above, the external puncture needle 111 includes a needle seat 1111, a connecting tube 1112, a needle tube 1113 and a needle head 1114. In addition, a movable valve 1115 that can reciprocate along the outside of the needle tube 1113 is provided in the length direction of the needle tube 1113, wh...

Embodiment 3

[0094] refer to Figure 3-4 , this embodiment provides a cored puncture needle assembly 111, based on the above-mentioned embodiment 1,

[0095] Preferably, the external puncture needle 111 includes a needle base 1111, a connecting tube 1112 and a needle tube 1113 connected in sequence;

[0096] The end of the needle tube 1113 facing away from the connecting tube 1112 is provided with a needle head 1114 .

[0097] Preferably, the connecting tube 1112 is provided with a laser positioner 1116 for emitting laser light in the direction of the needle 1114 for positioning.

[0098] Preferably, a scale is provided on the outside of the needle tube 1113 for measuring the puncture distance of the needle tube 1113 .

[0099] Preferably, the detachable core 112 includes a core base 1121 and a core tube 1122 connected to the core base 1121;

[0100] The core base 1121 is provided with a threaded connector connected with the needle base 1111 .

[0101] The core base 1121 is provided with...

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Abstract

The invention provides a puncture needle assembly with a core. The puncture needle assembly comprises an external puncture needle and a disassembly and assembly needle core; a cavity into which the disassembly and assembly needle core penetrates is formed in the external puncture needle in the length direction of the external puncture needle; the disassembly and assembly needle core is arranged inthe cavity and can move in the length direction of the external puncture needle. Through the puncture needle assembly with the core, on one hand, cutting injuries of puncturing to livers are avoided,and on the other hand, blocking inside the puncture needle is avoided; convenience is brought to doctors in work, and the potential safety hazard is eradicated that patients are injured by puncturing.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to a cored puncture needle assembly. Background technique [0002] Puncture is a term used in medical operations. It is a diagnosis and treatment technique in which a puncture needle is inserted into a body cavity to extract secretions for testing, injecting gas or contrast agent into the body cavity for contrast examination, or injecting drugs into the body cavity. The purpose of the puncture is to draw blood for testing, blood transfusion, infusion and catheterization for angiography. [0003] Common causes of obstructive jaundice include cholangiocarcinoma, cholelithiasis, etc. These patients often have a longer onset time, but the yellowing time of the body and eyes is shorter, and they are often accompanied by liver function damage. Percutaneous transhepatic cholangial drainage (PTCD, percutaneous transhepatic cholangial drainage) is life-saving for such patients. At ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/34
CPCA61B17/3417A61B17/3478
Inventor 黄勇慧李楠陈斌杨建勇林润戴海涛
Owner THE FIRST AFFILIATED HOSPITAL OF SUN YAT SEN UNIV
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