CN102217928A

CN102217928A - Electronic pain sense measuring pen

Info

Publication number: CN102217928A
Application number: CN2011101494166A
Authority: CN
Inventors: 顾小飞; 夏建华; 石学银; 邹最
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-06
Filing date: 2011-06-06
Publication date: 2011-10-19
Anticipated expiration: 2031-06-06
Also published as: CN102217928B

Abstract

The invention discloses an electronic pain sense measuring pen, which belongs to the field of medical instruments. The electronic pain sense measuring pen is characterized by being manufactured according to a principle that electric stimulation pain is generated when a high-voltage low-current electron impulse acts on human skin. The electron impulse is generated by adopting a piezoelectric effect principle of ceramic crystals. The electronic pain sense measuring pen consists of a pen head, a shell, a trigger switch, a piezoelectricity generator and a conducting wire. The electronic pain sense measuring pen has the advantage of measuring the level of anesthesia to determine the anesthetic effect and guide the anesthesia dosage when applied to intravertebral anesthesia and nerve blocking anesthesia. The electronic pain sense measuring pen avoids inaccurate feeling of pain stimulation of a patient because of the non-constant needling force in a needle punching method, ensures that the measurement result is more accurate, and cannot burn skin and do harm to a body at the same time of safe electric stimulation, thereby eliminating pains of patients, and reducing the probability of infection and blood-source spread diseases.

Description

Electronics algesimetry pen

Technical field

The present invention relates to medical instruments field, be specifically related to a kind of electronics algesimetry pen.

Background technology

Usually need measure level of anesthesia when clinical up intravertebral anesthesia and nerve block anesthesia with clear and definite anaesthetic effect and guidance anesthesia dosage.When measuring level of anesthesia, at present still adopt traditional needle point method, promptly use disposable syringe syringe needle stimulation patient skin, and the needle point stimulation pain felt to judge level of anesthesia and effect according to patient.When adopting needle point method, because the operator only grasps the acupuncture dynamics with sensation, can not carry out quantitative assay with constant dynamics, this can influence the subjective feeling of patient to the needle point stimulation pain to a certain extent.In addition, because needle point is very sharp, can stay some pinpricks at body surface when stimulating patient skin, bring misery and increased infection and the pathophorous probability in blood source to patient, sharp syringe needle also has the probability of accidentally injuring other staff simultaneously.External part Anesthetist uses blunt slightly department of neurology special test pin (neurotip tester pin) substituting disposable syringe needle, can improve the safety of needle point method greatly, but the test dynamics is difficult for accurately control.

The galvanism human body: whether the current intensity decision that human body passes through during electric shock causes body injury, when the electric current of frequency 50 ~ 60Hz passes through human body, current intensity 1mA promptly feels, 8 ~ 12mA tingle surpasses 20mA and can cause muscle contraction, localized burn, dyspnea even cardiac arrest.

Summary of the invention

In order to overcome above-mentioned the deficiencies in the prior art, the present invention proposes a kind of electronics algesimetry pen.Not only principle is clear for this electronics algesimetry pen, simple structure, and also safe in utilization, convenient.

The present invention is achieved by the following technical solutions:

Electronics algesimetry pen, electronic impulse acts on the principle that human body skin produces the electricity irritation pain and makes according to high voltage low current.The piezoelectric effect principle of ceramic crystal has been adopted in the generation of electronic impulse, applies high pressure on the piezoelectric ceramics both sides in the extremely short time, makes the inner directed flow that produces electricity of ceramic crystal, thereby produces the high voltage low current electronic impulse.Electronics algesimetry pen is made of nib, housing, trigger switch, piezo-electric generator and lead, and wherein piezo-electric generator is made of strut device and fixture; Strut device is made of ram, spring and the spacing orifice plate of card arm of band card arm, and fixture is made of piezoceramics crystal, spring and draw-in groove bayonet socket plate.

Beneficial effect of the present invention is: 1, measurement result is more accurate: the electronic impulse that piezo-electric generator produces only is directly proportional with the power electricity transformation ratio of ceramic crystal, the coefficient of elasticity and the deformation quantity of spring.Because the deformation quantity of spring is identical during each the triggering, thus the electronic impulse that all can produce identical energy at every turn, thus realize quantitative assay, avoided needle point method to grasp the non-constant patient of causing to the inaccurate influence of pain stimulation impression because of the acupuncture dynamics.2, safe noinvasive, do not have injury: electronic impulse is a high voltage low current, and action time is extremely short, can skin ambustion in the time of safe electricity irritation; Nib adopts blunt shape structure, can not produce injury to body surface, has eliminated patient's misery, has reduced the pathophorous probability of infection and blood source.3, except that Anesthesia Department, the pain sensation plane that also can be used for the patients of section office such as orthopaedics, neural Medicine and Surgery is measured, and is worth clinical application.

Description of drawings

Fig. 1 is the stereoscopic figure (wherein 1 is nib, and 2 is housing, and 3 is trigger switch) of this electronics algesimetry pen.

Fig. 2 is the cut-away view (wherein 4 are piezo-electric generator, and 5 is lead) of this electronics algesimetry pen.

Fig. 3 is the schematic perspective view (wherein 4-1 is a strut device, and 4-2 is a fixture) of piezo-electric generator.

Fig. 4 is the decomposition chart (wherein 4-1-3 is a spacing hole, and 4-2-3 is a draw-in groove, and 4-2-4 is a bayonet socket) of piezo-electric generator.

Fig. 5 is the strut device of piezo-electric generator and the cut-away view of fixture (wherein 4-1-1 is a ram, and 4-1-2 is a spring, and 4-1-1-1 is the card arm, and 4-2-1 is a piezoceramics crystal, and 4-2-2 is a spring).

Fig. 6 is the partial structurtes enlarged drawing of strut device.

Fig. 7 is the partial structurtes enlarged drawing of fixture.

Fig. 8 connects the sketch map of nib and piezo-electric generator for lead.

The specific embodiment

The present invention will be further described below in conjunction with accompanying drawing.

Specific embodiments of the present invention: this electronics algesimetry pen constitutes (Fig. 1, Fig. 2) by nib 1, housing 2, trigger switch 3, piezo-electric generator 4 and lead 5, and wherein piezo-electric generator 4 constitutes (Fig. 3) by strut device 4-1 and fixture 4-2; Strut device 4-1 constitutes (Fig. 5) by ram 4-1-1, the spring 4-1-2 of band card arm 4-1-1-1 and the spacing orifice plate of card arm that has a spacing hole 4-1-3, and fixture 4-2 is by piezoceramics crystal 4-2-1, spring 4-2-2 and have draw-in groove 4-2-3 and the draw-in groove bayonet socket plate of bayonet socket 4-2-4 constitutes (Fig. 4).When using it to measure level of anesthesia, nib 1 is contacted patient skin gently, promote trigger switch 3, drive piezo-electric generator 4 and produce the primary electron pulse, reach human body skin, produce stimulation pain through lead 5, nib 1.The process that piezo-electric generator 4 produces electronic impulses is as follows: the strut device 4-1 of piezo-electric generator 4 under the drive of trigger switch 3 forward displacement make fixture 4-2 inner spring 4-2-2 and strut device 4-1 inner spring 4-1-2 compressive deformation simultaneously, this moment, the card arm 4-1-1-1 owing to ram 4-1-1 was stopped by bayonet socket 4-2-4, so do not produce displacement.Along with strut device 4-1 continues forward, the card arm 4-1-1-1 of ram 4-1-1 moves to draw-in groove 4-2-3 along bayonet socket 4-2-4 under the inclined-plane of spacing hole 4-1-3 promotes, when card arm 4-1-1-1 shifts out bayonet socket 4-2-4 fully, stop releasing, thereby the piezoceramics crystal 4-2-1 that this moment of ram 4-1-1 under the promotion of strut device 4-1 inner spring 4-1-2 clashes in the fixture 4-2 at a terrific speed makes it produce deformation generation electric current.External force is removed the back and is recovered normal condition at the promotion down-pressed pole device 4-1 of fixture 4-2 inner spring 4-2-2.In knockout process, the length of time depends on coefficient of elasticity and the deformation quantity of strut device 4-1 inner spring 4-1-2, and the size of the electronic impulse voltage and current that produces depends on the power electricity transformation ratio of piezoceramics crystal 4-2-1.

Claims

1. electronics algesimetry pen is characterized in that: this mensuration pen comprises that nib, housing, trigger switch, piezo-electric generator and lead, nib wherein are positioned at shell the place ahead, link to each other with a shell; Piezo-electric generator wherein is arranged in the shell, realizes by piezoelectric ceramics, constitute by strut device and fixture, be connected with nib by lead, in order to produce the high voltage low current electronic impulse, by acting on skin after the nib output to produce the electricity irritation pain; Trigger switch wherein is arranged on the housing, is used for pressing the intravital piezo-electric generator of shell to produce piezoelectric current.

2. for the described electronics algesimetry of claim 1 pen, it is characterized in that the strut device of piezo-electric generator is made of ram, spring and the spacing orifice plate of card arm that band blocks arm, wherein the ram of band card arm is positioned at spring the place ahead, links to each other with spring; The card arm is the part of ram, is positioned at the ram both sides; The spacing orifice plate of card arm is positioned at the ram of band card arm and the both sides of spring, and the spacing hole on it holds the card arm, is used to limit the range of activity of card arm.

3. for the described electronics algesimetry of claim 1 pen, it is characterized in that the fixture of piezo-electric generator is made of piezoceramics crystal, spring and draw-in groove bayonet socket plate, wherein piezoceramics crystal is positioned at the spring front end, is paperwrapped in the spring; The other end of spring links to each other with strut device.

4. for claim 1,2 described electronics algesimetry pens, it is characterized in that spacing hole is the wedge structure with inclined-plane, its length is not more than the length between bayonet socket and the draw-in groove end points, and its widest part width is not less than bayonet socket and draw-in groove width sum, and its narrowest place width is not more than the draw-in groove width.

5. for claim 1,3 described electronics algesimetry pens, it is characterized in that draw-in groove bayonet socket plate is positioned at piezoceramics crystal, spring and strut device both sides, draw-in groove on it and bayonet socket hold the card arm, are used to limit the range of activity of card arm.

6. for claim 1,2,3 described electronics algesimetry pens, but it is characterized in that the deformation length of two springs in the piezo-electric generator all is not less than the length of spacing hole.

7. for the described electronics algesimetry of claim 1 pen, it is characterized in that the blunt shape structure that nib is made for conductive material.

8. for the described electronics algesimetry of claim 1 pen, it is characterized in that trigger switch, be positioned at the other or housing top of housing by forming with the hands contact portion with the strut device contact portion.