CN110897609B - Pain sense testing device with combined stimulation - Google Patents
Pain sense testing device with combined stimulation Download PDFInfo
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- CN110897609B CN110897609B CN201911103288.4A CN201911103288A CN110897609B CN 110897609 B CN110897609 B CN 110897609B CN 201911103288 A CN201911103288 A CN 201911103288A CN 110897609 B CN110897609 B CN 110897609B
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- pain
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- electric stimulator
- sliding core
- inner cylinder
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0048—Detecting, measuring or recording by applying mechanical forces or stimuli
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/48—Other medical applications
- A61B5/4824—Touch or pain perception evaluation
- A61B5/4827—Touch or pain perception evaluation assessing touch sensitivity, e.g. for evaluation of pain threshold
Abstract
The invention discloses a pain sense testing device with combined stimulation, and relates to the technical field of medical appliances. The pain sense testing device for combined stimulation comprises a shell, a pain sense needle, a return spring, a limiting inner cylinder, a sliding core cylinder and an electric stimulator, wherein the electric stimulator is connected with a trigger switch, and the front end of the limiting inner cylinder forms a limiting part of the sliding core cylinder; the trigger switch is used for pressing the electric stimulator, and the sliding core barrel is pushed to move in the limiting inner barrel by the electric stimulator, so that the pain measuring needle is driven to extend out of the front end opening to perform physical stimulation on the object to be measured, and the return spring is compressed; after the sliding core barrel reaches the limiting part in the limiting inner barrel, the electric stimulator starts to generate high-voltage low-current electronic pulse and transmits the high-voltage low-current electronic pulse to the pain measuring needle through the conductor to electrically stimulate the object to be measured. The invention realizes the combined stimulation of mechanical stimulation and electric stimulation, can more comprehensively evaluate the sensitivity of a patient to pain sense, and has wider application range.
Description
Technical Field
The invention relates to the technical field of medical appliances.
Background
Human anesthesia is a reversible inhibition of central and/or peripheral nervous system by drugs or other means, which is characterized primarily by loss of sensation, particularly pain.
Because of the individual differences in pain sensitivity among anesthetized individuals, there are great individual differences in the pre-operative anesthetic dosage, the onset time after anesthesia, the post-operative analgesic dosage, and the like. Anesthesiologists can usually evaluate patients by means of acupuncture, hand pinching, etc., because pain is a subjective feeling of clinical patients, and is difficult to objectively quantify, and at present, some scales are still used according to patient complaints, such as language evaluation scales (VRS), etc., and then the doctor takes the medicine according to experience. However, the above-described method is too subjective and the test procedure is not reproducible. Moreover, the accuracy of the dosage of the drug used in the test conclusion based on the subjective test mode is poor, the dosage needs to be readjusted according to the actual feeling of the patient in the anesthetic drug infusion process, and the patient is too painful.
There are also various pain measuring devices in the prior art, and the testing principle thereof is mainly divided into two types of electrical stimulation and mechanical stimulation: the electrical stimulation is mainly to use current to simulate mechanical stimulation to quantitatively test sensitivity, wherein the mechanical stimulation is to use sharp objects to stimulate the skin of a patient, and the test sensitivity is quantitatively tested by applying pressure. However, in practice it has been found that it is difficult to fully evaluate the sensitivity of a patient to pain by either electrical or mechanical stimulation alone, because of the differences in the sensitivity of the human body to the two stimulation regimes.
How to more comprehensively evaluate the sensitivity of a patient to pain sensation and improve the application range of a pain measuring device is a problem which needs to be solved currently.
Disclosure of Invention
The invention aims at: overcomes the defects of the prior art and provides a pain sense testing device with combined stimulation. The invention realizes the combined stimulation of mechanical stimulation and electric stimulation, can more comprehensively evaluate the sensitivity of a patient to pain sense, and has wider application range.
In order to achieve the above object, the present invention provides the following technical solutions:
a pain test device for combined stimulation, comprising a housing; the shell forms a cavity, the cavity is provided with a front end opening and a rear end opening, a pain measuring needle, a return spring, a limiting inner cylinder, a sliding core cylinder and an electric stimulator are arranged in the cavity, the electric stimulator is connected with a trigger switch, and the electric stimulator can generate high-voltage low-current electronic pulses under preset pressure; the front end of the limiting inner cylinder forms a limiting part of the sliding core cylinder;
the pain measuring needle is fixedly arranged at the front end of the sliding core barrel and is electrically connected with the electric stimulator through a conductor; the sliding core barrel is arranged in the limiting inner barrel through a return spring, the electric stimulator is arranged in the sliding core barrel through a mounting plate, and the trigger switch is connected with the electric stimulator through the rear end opening;
the trigger switch is used for pressing the electric stimulator, and the electric stimulator pushes the sliding core barrel to move in the limiting inner barrel, so that the pain measuring needle is driven to extend out of the front end opening to perform physical stimulation on the object to be measured, and the return spring is compressed; after the sliding core barrel reaches the limiting part in the limiting inner barrel, the electric stimulator starts to generate high-voltage low-current electronic pulse and transmits the high-voltage low-current electronic pulse to the pain measuring needle through the conductor to electrically stimulate the object to be measured.
Further, the rear end of the limiting inner cylinder is provided with a limiting controller, and the limiting controller is used for controlling the position of the limiting inner cylinder in the shell, so that the extending length of the pain measuring needle relative to the front end opening is controlled.
Further, the limit controller is movably connected with the limit inner cylinder through threads, and the distance between the limit controller and the limit inner cylinder is adjusted through threads so as to adjust the position of the limit inner cylinder in the shell.
Further, an external thread is arranged at the tail end of the limiting inner cylinder, an internal thread matched with the external thread is arranged at the front end of the limiting controller, and the position of the limiting inner cylinder is adjusted through forward rotation and reverse rotation; the limit controller is also provided with a through hole for the trigger switch to pass through.
Further, trigger switch is T type structure, including the pressure pole that can pass rear end open-ended and can not pass rear end open-ended press the head, press the pole front end and be connected with the electric stimulator, press the rear end connection press the head of pole and supply the user to press.
Further, after the test is completed, the return spring is reset, and the sliding core barrel moves towards the rear end under the action of the return spring, so that the pain measuring needle is driven to retract into the cavity.
Further, the conductor comprises a front end bending part, a main body straight rod part and a rear end bending part, wherein the front end bending part is fixedly connected with the tail part of the pain measuring needle, the rear end bending part is fixedly connected with the current output end of the electric stimulator, and a hole or a groove for the main body straight rod part to pass through is formed in the mounting plate.
Further, the shell is designed into a pen shape and comprises a pen tip part and a pen container part, the front end opening is positioned on the pen tip part, and the rear end opening is positioned on the pen container part.
Further, the pain measuring needle is a structure with a tip made of conductive materials.
Further, the electric stimulator is a piezoelectric generator.
Compared with the prior art, the invention has the following advantages and positive effects by taking the technical scheme as an example: on one hand, the combined stimulation of mechanical stimulation and electric stimulation is realized, and the sensitivity of a patient to pain sense can be more comprehensively estimated; on the other hand, the intensity of the mechanical stimulus can be conveniently and quantitatively adjusted, and an operator can adjust according to different users, so that the application range of the pain test device is improved.
Drawings
Fig. 1 is a schematic perspective view of a pain testing apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic cross-sectional view of a pain testing apparatus according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a housing according to an embodiment of the present invention.
Fig. 4 is a schematic connection diagram of a limit inner cylinder and a limit controller according to an embodiment of the present invention.
Fig. 5 is a schematic diagram of an electrical connection between a pain measurement needle and an electrical stimulator according to an embodiment of the present invention.
Fig. 6 is a schematic connection diagram of a sliding core and a return spring according to an embodiment of the present invention.
Reference numerals illustrate:
pain test device 100;
a housing 110, a cavity 111, a barrel portion cavity 111a, a pen tip cavity 111b, a front end opening 112, a rear end opening 113;
a pain measurement needle 120;
a return spring 130;
a limit inner cylinder 140, an external thread 141, a front end through hole 142 and a rear end through hole 143;
a sliding cartridge 150, a mounting plate 151, an end plate 152, a front end through hole 153, a rear end through hole 154;
an electrostimulator 160, a fixing portion 161, a compression bar portion 162;
limit controller 170, internal thread 171, through hole 172;
a trigger switch 180;
a conductor 190, a front end bend 191, a body straight bar 192, a rear end bend 193.
Detailed Description
The combined stimulus pain test device of the present disclosure is described in further detail below with reference to the drawings and specific examples. It should be noted that the technical features or combinations of technical features described in the following embodiments should not be regarded as being isolated, and they may be combined with each other to achieve a better technical effect. In the drawings of the embodiments described below, like reference numerals appearing in the various drawings represent like features or components and are applicable to the various embodiments. Thus, once an item is defined in one drawing, no further discussion thereof is required in subsequent drawings.
It should be noted that the structures, proportions, sizes, etc. shown in the drawings are merely used in conjunction with the disclosure of the present specification, and are not intended to limit the applicable scope of the present invention, but rather to limit the scope of the present invention. The scope of the preferred embodiments of the present invention includes additional implementations in which functions may be performed out of the order described or discussed, including in a substantially simultaneous manner or in an order that is reverse, depending on the function involved, as would be understood by those of skill in the art to which embodiments of the present invention pertain.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values.
Examples
Referring to fig. 1 and 2, a schematic structural diagram of a pain test device with combined stimulation according to an embodiment of the present invention is shown.
The pain testing device 100 comprises a shell 110, a pain testing needle 120, a return spring 130, a limiting inner cylinder 140, a sliding core cylinder 150, an electric stimulator 160, a limiting controller 170 and a trigger switch 180.
The housing 110 is designed in a pen shape, including a pen tip portion and a pen barrel portion. In this embodiment, as a typical preferred structure, the pen tip portion adopts a triangular cone structure, the pen container portion adopts a cylindrical structure, and the pen tip portion and the pen container portion may be integrally formed or may be assembled after being separately formed.
The housing 110 forms a cavity 111, the cavity 111 being provided with a front end opening 112 and a rear end opening 113.
Referring to fig. 3, a specific structure of the housing 110 is illustrated: the cavity 111 includes a barrel cavity 111a and a nib cavity 111b due to the difference between the tip and the barrel, the front end opening 112 is located at the front end of the tip, and the rear end opening 113 is located at the rear end of the barrel.
The cavity 111 is internally provided with a pain measuring needle 120, a return spring 130, a limiting inner cylinder 140, a sliding core cylinder 150 and an electric stimulator 160. Wherein the body of the pain measurement needle 120 and the return spring 130 are located in the pen tip cavity 111 b; the limit cylinder 140, the slide cylinder 150 and the electrostimulator 160 are located in the barrel cavity 111 a.
With continued reference to fig. 1, the electrical stimulator 160 is connected to a trigger switch 180, and the electrical stimulator 160 is capable of generating high voltage low current electrical pulses at a preset pressure. In this embodiment, the trigger switch 180 is a push switch, and adopts a T-type structure. Specifically, the trigger switch 180 may include a pressing rod capable of passing through the rear end opening 113, the front end of which is connected to the electric stimulator 160, and a pressing head incapable of passing through the rear end opening 113, the rear end of which is connected to the pressing head for the user to press.
The slide cartridge 150 is movable within the limit inner cylinder 140. In this embodiment, the front end of the limiting inner cylinder 140 forms a limiting portion of the sliding core 150, and the limiting portion is used to limit the sliding core 150 to continue moving in the limiting inner cylinder 140. By way of example and not limitation, the limiting portion may be a limiting block (protrusion) or a limiting plate protruding on the inner wall of the limiting inner cylinder 140, and when the sliding core 150 moves to the position where the limiting block (protrusion) or the limiting plate is located, the sliding core 150 cannot move continuously due to the presence of the limiting block (protrusion) or the limiting plate, thereby realizing the limiting effect on the sliding core 150.
The pain measuring needle 120 is fixedly installed at the front end of the sliding core 150 and is electrically connected with the electric stimulator 160 through a conductor 190.
Meanwhile, the sliding core barrel 150 is installed in the limiting inner barrel 140 through the return spring 130, the electric stimulator 160 is installed in the sliding core barrel 150 through the installation plate, and the trigger switch 180 is connected with the electric stimulator 160 after passing through the rear end opening.
In this embodiment, the pain measuring needle is a structure made of conductive material and having a tip.
In operation, the trigger switch 180 presses the electric stimulator 160 to apply a pushing force, and the electric stimulator 160 pushes the sliding core barrel 150 to move in the limiting inner barrel 140, so as to drive the pain measuring needle 120 to extend out of the front end opening 112, thereby performing physical stimulation on the object to be measured, and in the process, the return spring is changed from a relaxed state to a compressed state. Continuing to press, after the sliding core barrel 150 reaches the position of the limiting part in the limiting inner barrel 140, the sliding core barrel 150 is limited and can not move forward any more, and the pressing force is applied to the electric stimulator so as to start the electric stimulator. After the electrostimulator is activated, a high voltage low current electronic pulse can be generated and transmitted to the pain measuring needle 120 via the conductor 190 to electrically stimulate the subject. After the test is completed, the pressing force is removed, the return spring is reset to a diastole state, and the sliding core barrel moves towards the rear end under the action of the return spring, so that the pain measuring needle is driven to retract into the cavity 111.
In this embodiment, the rear end of the limiting inner cylinder 140 is further provided with a limiting controller 170, and the limiting controller 170 is used to control the position of the limiting inner cylinder in the housing 110, so as to control the extension length of the pain measuring needle relative to the front end opening. That is, the position of the limit cylinder 140 in the housing 110 can be adjusted by the limit controller 170.
Preferably, the limit controller 170 is movably connected with the limit inner cylinder 140 through threads. In operation, the spacing controller 170 is threadably adjusted to the spacing inner barrel 140 to adjust the position of the spacing inner barrel 140 within the cavity of the housing 110.
Specifically, referring to fig. 4, the limiting inner cylinder 140 includes a cavity for moving the sliding core cylinder 150, an external thread 141 is disposed at the tail end of the limiting inner cylinder 140, a front end through hole 142 for passing through the return spring 130 is disposed at the front end of the limiting inner cylinder 140, and a rear end through hole 143 for passing through the trigger switch 180 is disposed at the rear end of the limiting inner cylinder 140.
The front end of the limit controller 170 is provided with an internal thread 171 matching with the external thread 141, and the rear end of the limit controller 170 is provided with a through hole 172 for the trigger switch 180 to pass through.
Meanwhile, the limit controller 170 is provided with an adjusting cavity corresponding to the wall of the limit inner cylinder 140 to accommodate the screwed limit inner cylinder wall. As an example of a typical manner, described in connection with fig. 4: the limit controller 170 includes an outer wall, an inner wall, and a sidewall connecting the outer wall and the inner wall, the outer wall having a length greater than that of the inner wall, and an annular adjustment chamber inner wall formed by the outer wall, the inner wall, and the sidewall forms the through hole 172. The front end of the outer wall is provided with an internal thread 171.
When the user rotates the limit controller 170 forward, the limit inner cylinder 140 is screwed into the adjustment cavity by the screw, and the limit inner cylinder 140 moves to the rear end in the housing 110, resulting in a shortened cavity space in which the sliding cartridge 150 can move, thereby reducing the extension length of the pain measuring needle.
In contrast, when the user reversely rotates the limit controller 170, the limit inner cylinder 140 is rotated out of the adjustment cavity under the action of the screw thread, and the limit inner cylinder 140 moves toward the front end in the housing 110, resulting in a longer cavity space in which the sliding core cylinder 150 can move, thereby increasing the extension length of the pain measuring needle.
Referring to fig. 5, pain measurement needle 120 is electrically connected to electrostimulator 160 via conductor 190. Specifically, the conductor 190 may include a front end bending portion 191, a main body straight rod portion 192, and a rear end bending portion 193, where the front end bending portion 191 is fixedly connected to the tail of the pain measuring needle 120, and the rear end bending portion 193 is fixedly connected to the current output end of the electric stimulator 160.
Further, in order to reduce the influence of the mounting plate 151 corresponding to the electric stimulator 160 on the main body straight bar 192, a hole or a slot for the main body straight bar 192 to pass through may be further provided on the mounting plate 151.
Referring to fig. 6, the mounting plate 151 is fixedly disposed in the cavity of the sliding cartridge 150 to fixedly mount the electric stimulator 160 in the sliding cartridge 150. Meanwhile, the front end of the sliding core barrel 150 is installed in the limiting inner barrel 140 through the return spring 130, and the sliding core barrel 150 can be controlled to move in the limiting inner barrel 140 by utilizing the deformation characteristic of the return spring 130, so that the pain measuring needle fixedly installed on the end plate 152 of the sliding core barrel 150 is driven to move and reset (retract into the cavity 111).
The pain measurement needle 110 may be directly fixed to the end plate 152 by welding or snap-fit connection; the pain measuring needle 110 may also be fixed by providing a front through hole 153 in the end plate 152, as shown in fig. 6.
The sliding cartridge 150 is further provided with a rear through-hole 154 through which the electric stimulator 160 passes. In this embodiment, the electro-stimulator is preferably a piezoelectric generator, that is, a piezoelectric phenomenon generated by mechanical deformation of a crystal is used to implement high-voltage low-current electronic pulse.
Specifically, the piezoelectric generator may include a fixing portion 161 and a pressing bar portion 162 (in conjunction with fig. 5), and the fixing portion 161 is fixedly mounted on the mounting plate 151. The fixing portion 161 is provided with a piezoelectric ceramic crystal and a spring, the pressing portion 162 is provided with a striker and a spring, and the piezoelectric generator generates an electronic pulse as follows: the pressure bar part of the piezoelectric generator is driven by the trigger switch to displace forwards, and the striker rapidly impacts the piezoelectric ceramic crystal in the fixed part under the pushing of the spring in the pressure bar part to deform the piezoelectric ceramic crystal so as to generate current; after the external force is removed, the pressing rod part is pushed by the spring in the fixing part to restore to the normal state. The working principle is the same as that of the igniter of the existing piezoelectric ceramic lighter, and the description is omitted here.
In the impact process, the length of time depends on the elastic coefficient and deformation amount of the spring in the compression bar part, and the magnitude of the generated electronic pulse voltage and current depends on the force-electricity conversion coefficient of the piezoelectric ceramic crystal.
In the above description, the disclosure of the present invention is not intended to limit itself to these aspects. Rather, the components may be selectively and operatively combined in any number within the scope of the present disclosure. In addition, terms like "comprising," "including," and "having" should be construed by default as inclusive or open-ended, rather than exclusive or closed-ended, unless expressly defined to the contrary. All technical, scientific, or other terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Common terms found in dictionaries should not be too idealized or too unrealistically interpreted in the context of the relevant technical document unless the present disclosure explicitly defines them as such. Any alterations and modifications of the present invention, which are made by those of ordinary skill in the art based on the above disclosure, are intended to be within the scope of the appended claims.
Claims (10)
1. A pain sensation testing device for combined stimulation, comprising a housing, characterized in that: the shell forms a cavity, the cavity is provided with a front end opening and a rear end opening, a pain measuring needle, a return spring, a limiting inner cylinder, a sliding core cylinder and an electric stimulator are arranged in the cavity, the electric stimulator is connected with a trigger switch, and the electric stimulator can generate high-voltage low-current electronic pulses under preset pressure; the front end of the limiting inner cylinder forms a limiting part of the sliding core cylinder;
the pain measuring needle is fixedly arranged at the front end of the sliding core barrel and is electrically connected with the electric stimulator through a conductor; the sliding core barrel is arranged in the limiting inner barrel through a return spring, the electric stimulator is arranged in the sliding core barrel through a mounting plate, and the trigger switch is connected with the electric stimulator through the rear end opening;
the trigger switch is used for pressing the electric stimulator, and the sliding core barrel is pushed to move in the limiting inner barrel by the electric stimulator, so that the pain measuring needle is driven to extend out of the front end opening to perform physical stimulation on the object to be measured, and the return spring is compressed at the moment; after the sliding core barrel reaches the limiting part in the limiting inner barrel, the electric stimulator starts to generate high-voltage low-current electronic pulse and transmits the high-voltage low-current electronic pulse to the pain measuring needle through the conductor to electrically stimulate the object to be measured.
2. The pain testing apparatus of claim 1, wherein: the rear end of the limiting inner cylinder is provided with a limiting controller, and the limiting controller is used for controlling the position of the limiting inner cylinder in the shell so as to control the extension length of the pain measuring needle relative to the front end opening.
3. The pain testing apparatus of claim 2, wherein: the limiting controller is movably connected with the limiting inner cylinder through threads, and the distance between the limiting controller and the limiting inner cylinder is adjusted through threads so as to adjust the position of the limiting inner cylinder in the shell.
4. A pain testing apparatus according to claim 3, wherein: the tail end of the limiting inner cylinder is provided with external threads, the front end of the limiting controller is provided with internal threads matched with the external threads, and the position of the limiting inner cylinder is adjusted by forward and reverse rotation; the limit controller is also provided with a through hole for the trigger switch to pass through.
5. The pain testing apparatus of claim 1, wherein: the trigger switch is of a T-shaped structure and comprises a pressing rod capable of penetrating through the rear end opening and a pressing head incapable of penetrating through the rear end opening, the front end of the pressing rod is connected with the electric stimulator, and the rear end of the pressing rod is connected with the pressing head for a user to press.
6. The pain testing apparatus of claim 1, wherein: after the test is finished, the return spring is reset, and the sliding core barrel moves towards the rear end under the action of the return spring, so that the pain measuring needle is driven to retract into the cavity.
7. The pain testing apparatus of claim 1, wherein: the conductor comprises a front end bending part, a main body straight rod part and a rear end bending part, wherein the front end bending part is fixedly connected with the tail part of the pain measuring needle, the rear end bending part is fixedly connected with the current output end of the electric stimulator, and a hole or a groove for the main body straight rod part to pass through is formed in the mounting plate.
8. The pain testing apparatus of claim 1, wherein: the shell is designed into a pen shape and comprises a pen tip part and a pen container part, the front end opening is positioned on the pen tip part, and the rear end opening is positioned on the pen container part.
9. The pain testing apparatus of claim 1, wherein: the pain measuring needle is a structure with a tip made of conductive materials.
10. The pain testing apparatus of claim 1, wherein: the electric stimulator is a piezoelectric generator.
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| CN201911103288.4A CN110897609B (en) | 2019-11-13 | 2019-11-13 | Pain sense testing device with combined stimulation |
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| CN201911103288.4A CN110897609B (en) | 2019-11-13 | 2019-11-13 | Pain sense testing device with combined stimulation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112472036A (en) * | 2020-12-17 | 2021-03-12 | 南京凝动数字科技有限公司 | Quantitative mechanical pain testing method and device |
| CN112545464B (en) * | 2020-12-17 | 2022-02-01 | 南京医科大学附属口腔医院 | Quantitative pain detection method and device |
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| CN105266758A (en) * | 2014-07-23 | 2016-01-27 | 上海第十人民医院 | Pen type nerve system detector |
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