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Epidural space locating device

An epidural space, positioning device technology, applied in the fields of medical science, surgery, diagnosis, etc., can solve problems such as destroying the connection

Inactive Publication Date: 2011-10-12
海克托·D·J·维利兹里维拉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] As can be seen, the prior art still uses or is associated with syringes or media, where pressure must be applied with fingers, and when the syringe and spinal needle are coupled to each other, resulting in a length of several centimeters, once coupled in the There are deficiencies in the control of needles and devices, as the weight can break the connection, so more precise and compact devices and devices are needed that allow the operator to know when the epidural space has been reached

Method used

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Embodiment Construction

[0029] For a clear understanding of the advantages and differences of the present invention over the prior art, see figure 1 and 3 , to describe the so-called "loss of resistance" technique, wherein a spinal needle 10 of the Tuhoy type and a barrel 20 coupled to the spinal needle 10 are used. exist figure 1 , the plunger 21 of the syringe 10 is biased towards the proximal housing end 22 of the syringe 20 because there is a certain amount of air therein, that is, the cannula 11 of the syringe 10 does not reach the membranes located between the dura mater 2 and the arachnoid mater 3 Between the epidural space 1. Reference numeral 4 corresponds to the pia mater.

[0030] figure 2The moment at which the cannula 11 of the syringe 10 has pierced the dura mater 2 and reached the epidural space 1 is shown, wherein there is a lower pressure here compared to the pressure prevailing in the syringe 20 , the corresponding syringe 20 The plunger 21 travels towards the patient without ...

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Abstract

An epidural space locating device is described comprising a handle with a proximal extremity and a distal extremity, a hollow distal chamber coupled to the distal extremity of the handle and provided with a distal connector wherein is received a spinal needle which is introduced into the body of the patient such as to create a flow connection between said spinal needle and distal chamber; the device moreover comprises a piston displaced within said distal chamber from an initial position to a final position when there is a pressure loss within said distal chamber due to said spinal needle reaching the epidural space; the piston is secured prior to utilizing the device emitting a warning signal at the moment when the epidural space is attained.

Description

technical field [0001] The present invention relates to techniques in the design of devices and equipment for use in surgical procedures, and more particularly, to epidural space locating devices that clearly inform the operator of the arrival of a spinal needle during epidural anesthesia and analgesia Patient's epidural time. Background technique [0002] To create epidural anesthesia or analgesia, two basic techniques of introducing drugs into the spinal region of the patient can be used, namely: epidural and subdural, or subarachnoid techniques. During this type of procedure, an anesthetic is injected into the spinal cord and into the nerve roots to block pain sensation in areas of the body (such as the lower abdomen, buttocks, legs, or pelvis) during labor. [0003] Since said medical procedures pose certain risks to the patient, it is very important to pay attention to the major parts of the human body involved in these procedures, such as the meninges and cerebrospina...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/34
CPCA61B17/3401A61B17/3403A61B2017/00022A61B2017/00115A61B2090/064
Inventor 海克托·D·J·维利兹里维拉
Owner 海克托·D·J·维利兹里维拉
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