Medical tool for reduced penetration force with feedback means

A technology of penetrating parts and medical devices, applied in the field of hand-held medical devices, can solve problems such as difficult and difficult for clinicians to apply bias force and discomfort to the plunger

Inactive Publication Date: 2011-10-05
PIEZO RESONANCE INNOVATIONS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One problem with this conventional device and method is that it is difficult for the clinician to apply a biasing force to the plunger while applying an advancing force relative to the syringe body (causing the needle to enter the ligamentum flavum)
Furthermore, to prevent accid

Method used

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  • Medical tool for reduced penetration force with feedback means
  • Medical tool for reduced penetration force with feedback means
  • Medical tool for reduced penetration force with feedback means

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Embodiment Construction

[0080] Figure 3 to Figure 21 The preferred embodiments of the invention are illustrated, like numerals indicating like and corresponding elements. For purposes of describing the relative configuration of the various elements of the invention, the narrow definitions of the terms "distal", "distal", "proximal" or "proximally" do not refer to a specific strict direction, but are used as station positions The symbols define relative positions, which are defined using figures and reference numerals according to the context. A list of the various reference labels is provided at the end of this specification. In addition, US A.S.N. No. 12 / 163,071, entitled "Medical Tools for Reducing Penetration," filed June 27, 2008, is hereby incorporated by reference in its entirety.

[0081] For example, the effectiveness of the present invention described in the preferred embodiments above utilizes force reduction to optimize penetration of tissues or substances found in the human body. In e...

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PUM

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Abstract

A medical device for reducing the force necessary to penetrate living being tissue using a variety of reciprocating motion actuators, including piezoelectric, voice coil, solenoids, pneumatics or fluidics. The reciprocating actuator drives a penetrating member, such as a needle, through the tissue at a reduced force while the device detects the passage of the penetrating member through the tissue. Upon passage of the penetrating member through the tissue, electrical power to the reciprocating actuator is automatically terminated. One exemplary method for detecting this passage is via a fluid-containing syringe that is coupled to a channel within the penetrating member.; Once the penetrating member tip has passed through the living tissue, the fluid within the syringe no longer experiences any pressure and a plunger within the syringe displaces indicating passage of the penetrating member tip. This motion can provide direct tactile feedback to an operator of the medical device or can automatically open a switch providing electrical power to the medical device. Alternatively, a pressure transducer can also monitor the pressure within the penetrating member channel and automatically activate the switch to cut off the electrical power.

Description

[0001] Cross References to Related Applications [0002] This PCT application claims the benefit under 35 U.S.C. § 119(e) of Provisional Application No. 61 / 089,756, filed September 15, 2008, entitled "Medical Tools for Reducing Penetration With Feedback Device," The entire disclosure of the above application is incorporated herein by reference. technical field [0003] The present invention relates generally to hand-held medical devices, and more particularly to electrically powered lancets, epidural catheter inserters, biopsy medical devices (e.g., bone biopsy medical devices), access penetrators, spinal needles, and other catheterization needles . The invention is suitable for transporting and removing blood, tissue, medicine, bone marrow, nutrients or other substances in the body. Background technique [0004] An epidural is a form of local anesthesia that involves injecting medication directly into the epidural space. When the procedure is initiated, a needle is inser...

Claims

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Application Information

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IPC IPC(8): A61M5/48A61M5/20A61M5/315A61B10/02
CPCA61B10/0283A61B2010/0003A61B17/3401A61B10/025A61B2018/00196A61B17/320068A61B2017/32007A61B2017/320089
Inventor 保罗·L·弗阮克豪斯莫林·L·马尔维希尔布赖恩·M·帕克
Owner PIEZO RESONANCE INNOVATIONS
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