Thoracentesis device with hyper-sensitive detection mechanism

A technique of puncture and thoracotomy, applied in the direction of puncture needles, suction instruments, surgery, etc., can solve the problems of unintentional puncture and no way to show

Inactive Publication Date: 2006-03-01
SHERWOOD SERVICES AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a drawback of Clarke's device is that inadvertent puncture of internal body organs by the sharp end of the catheter may occur when the device is inserted through the chest wall, because once the sharp end enters the chest cavity, there is no way to indicate whether the sharp end of the device has touched the lung , or other human organs

Method used

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  • Thoracentesis device with hyper-sensitive detection mechanism
  • Thoracentesis device with hyper-sensitive detection mechanism
  • Thoracentesis device with hyper-sensitive detection mechanism

Examples

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Embodiment Construction

[0025] Referring to the drawings, a preferred embodiment of the thoracentesis instrument of the present invention is shown and generally indicated at 10 in FIG. 1 . For ease of presentation, the distal end refers to the end of the device furthest from the user, and the proximal end refers to the end of the device closest to the user. Referring to FIGS. 1 and 5 , a thoracentesis instrument 10 includes a handle 11 having a transparent hollow housing 13 and a hollow outer needle 30 fixedly connected to the handle 11 .

[0026] Such as Figure 5 Shown in detail, the handle 11 includes a front shell 12 connectable to a rear shell 14 defining a cavity 50 within the handle 11 . The front housing 12 includes an externally threaded portion 80 which cooperates with a corresponding internally threaded portion 81 formed along the outer surface of the rear housing 14. Sealing engagement between the threaded portions 80, 81 is obtained by relative rotation of the housing 12 or 14. . It is a...

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PUM

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Abstract

A thoracentesis device (10) having a hypersensitive dual spring indication mechanism (16) (18) for alerting the user of any contact to internal body organs by the blunt tip distal end (32) of the thoracentesis device (10) once the device (210) has been inserted inside the patient's body. The thoracentesis device (10) includes a handle, an outer needle (30) having a longitudinal conduit (34) in fluid communication with a cavity (50) defined inside the handle (11). A spring loaded inner needle (28) is slide disposed inside the conduit (34) with the proximal portion of the inner needle (28) operably engaged with a large spring (22) that imparts a sufficient distal spring force to fully extend the blunt tip end (32) of the inner needle (28) beyond the sharp distal tip (54) of the outer needle (30).

Description

field of invention [0001] The present invention relates to a medical device for performing thoracentesis, and more particularly to a thoracentesis device for withdrawing fluid from the chest cavity. In particular, the present invention relates to a thoracentesis instrument with a high-sensitivity dual spring detection mechanism that greatly reduces the possibility of the instrument stabbing or lacerating the lung during thoracentesis. Background technique [0002] Thoracentesis involves drawing or removing fluid from between the lungs and the chest wall in patients with certain thoracic injuries. Removal of fluid from the chest cavity is a necessary procedure in order for the lungs to expand properly and to fully recover. In prior art thoracentesis, the user makes an incision through the chest wall and inserts a catheter or other tubing through the incision and into the chest cavity. The proximal end of the catheter is then connected to a source of negative pressure, such ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M1/00A61B17/34A61B17/00A61B19/00A61M5/178
CPCA61B17/3496A61B2019/481A61B17/3474A61B17/3401A61B5/6885A61B17/3415A61B2019/4836A61B2017/00115A61B2090/08021A61B2090/0807
Inventor 格雷戈里・艾伦・施托伊布艾伦・兰福特罗纳德・劳埃德
Owner SHERWOOD SERVICES AG
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