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a puncture sheath

A sheath tube and outer sheath tube technology, applied in the field of medical devices, can solve the problems of puncture needles hurting the heart, increasing the risk of puncture, and easily damaging the heart and lungs, and achieve the effect of improving safety

Active Publication Date: 2020-05-26
潘湘斌
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The needle-like structure has a good effect on penetrating the chest wall, but it is easy to damage the heart or lungs and cause serious complications after penetrating the chest wall. The distance is constantly changing, which can easily cause the puncture needle to injure the heart, increasing the risk of puncture

Method used

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Examples

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Embodiment Construction

[0022] In order to make the present invention more comprehensible, preferred embodiments are described in detail below with accompanying drawings.

[0023] Such as figure 1 As shown, a puncture sheath provided by the present invention includes an outer sheath 1 and a puncture needle core 2 . The puncture needle core 2 can be placed in the outer sheath tube 1 during use, and the outer diameter of the puncture needle core 2 is adapted to the inner diameter of the outer sheath tube 1 .

[0024] to combine image 3 , The puncture needle core 2 is made of stainless steel, including a needle head 5 and a needle body 6 , the needle head 5 is tapered and transitions smoothly with the needle body 6 .

[0025] The outer sheath tube 1 is made of polyurethane or carbon fiber material, and the shape of the tube body of the outer sheath tube 1 is a straight tube or a bendable intervention catheter. The outer diameter of the outer sheath tube 1 is 2-6.5 mm, the wall thickness is 0.2 mm, a...

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PUM

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Abstract

The invention discloses a puncture sheathing canal, which is characterized by comprising an outer sheathing canal body, wherein a puncture needle core, which is just used for piercing skin surface, isarranged in the outer sheathing canal body; in a puncture process, the head of the outer sheathing canal body is transformed into an expanded state from a closed state; the head of the outer sheathing canal body, when getting closed, can pierce into subcutaneous tissues until penetrating a thoracic wall or abdominal wall; and the head of the outer sheathing canal body, after penetrating the thoracic wall or the abdominal wall, can get expanded into the form of an umbrella. The puncture sheathing canal provided by the invention cannot cause injuries to such visceral organs as hearts, lungs andabdominal cavities easily; and the puncture sheathing canal is convenient to operate, simple in structure, easy for industrial production and excellent in medical effect.

Description

technical field [0001] The invention relates to a medical puncture sheath, in particular to a puncture sheath for pericardial or thoracoabdominal surgery, and belongs to the technical field of medical instruments. Background technique [0002] Puncture therapy, as a method of examination or surgical treatment, causes less trauma to the patient and has a better effect. But because the puncture cannot be directly detected and implemented by people's naked eyes, there is a certain risk. Present puncture needles mainly include an outer sleeve and a needle core. In order to facilitate the puncture of the human body, the end of the outer sleeve is often made into a beveled needle shape, and the needle point corresponding to the needle core of the outer sleeve is also a beveled needle point. The needle-like structure has a good effect on penetrating the chest wall, but it is easy to damage the heart or lungs and cause serious complications after penetrating the chest wall. The di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/34
CPCA61B17/3417A61B2017/3456
Inventor 潘湘斌
Owner 潘湘斌
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