CN102648848B - Fingertip-type blood oxygen measuring instrument - Google Patents
Fingertip-type blood oxygen measuring instrument Download PDFInfo
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- CN102648848B CN102648848B CN201110047713.XA CN201110047713A CN102648848B CN 102648848 B CN102648848 B CN 102648848B CN 201110047713 A CN201110047713 A CN 201110047713A CN 102648848 B CN102648848 B CN 102648848B
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- fingerstall
- finger
- upper shell
- lower house
- clip type
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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
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
- A61B5/1455—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters
- A61B5/14551—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters for measuring blood gases
- A61B5/14552—Details of sensors specially adapted therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6813—Specially adapted to be attached to a specific body part
- A61B5/6825—Hand
- A61B5/6826—Finger
Abstract
The invention provides a fingertip-type blood oxygen measuring instrument, which comprises an upper shell and a lower shell, which are opposite to each other, and the fingertip-type blood oxygen measuring instrument also comprises a finger sleeve which is arranged between the upper shell and the lower shell, is connected with the upper and the lower shells and is used for accommodating a finger, and when the finger is plugged into the finger sleeve, a contraction force is formed in the overlapping direction of the upper shell and the lower shell, so that the upper shell and the lower shell clamp the finger. By adopting a pivot connection way, a clamping force on the finger is uniform, and the fingertip-type blood oxygen measuring instrument is more compact in structure and convenient to install.
Description
Technical field
The invention belongs to field of medical, be specifically related to a kind of finger-clip type oximeter.
Background technology
In vital signs detection field, blood oxygen saturation is an important parameter, often judges the health status of respiratory circulatory system on clinical medicine by blood oxygen saturation.Blood oxygen measuring device is the instrument for measuring blood oxygen saturation.
Traditional blood oxygen measuring device comprises upper casing, lower casing and spring, and upper casing and lower casing pivotally link together by spring, and upper casing and lower casing surround the finger cavity volume of an end opening, and finger can be in this opening inserts finger cavity volume.Be provided with dark slide at upper casing and lower casing with the both sides that finger direction of insertion parallels, enter in finger cavity volume for blocking outside surround lighting.In use there is following shortcoming in the blood oxygen measuring device of this structure:
The first, easily there is jump ring phenomenon and cause blood oxygen measuring device normally to use in the spring that connects upper casing and lower casing; The second, although be provided with dark slide, natural light still easily enters in finger cavity volume from the position of spring is set, and this has affected the measurement result of blood oxygen saturation; The 3rd, the chucking power of blood oxygen measuring device is inhomogeneous; The 4th, the connecting line that is arranged on the electric component in upper casing and lower casing for connecting exposes, and causes connecting line easily to damage; The 5th, the upper casing connecting in pivotally connected mode and not malleable of the configuration design of lower casing, thus cause the configuration design of blood oxygen measuring device single.
For this reason, Chinese patent application 200920246562.9 discloses a kind of Fingerstall-type blood oxygen measuring apparatus, as shown in Figure 1, this Fingerstall-type blood oxygen measuring apparatus has adopted the integrated large cavity of flexible glue material, in large cavity, be provided with finger baffle plate, thereby large cavity is divided into two chambers, for accommodating the fingerstall 01 of measured finger and for holding the casing 02 of measuring cell and data handling component.A side of fingerstall 01 is outwardly and form protuberance 03, can obtain larger opening angle so that must point in the time inserting fingerstall 01.Although this Fingerstall-type blood oxygen measuring apparatus does not adopt the syndeton of pivot mode, avoided the problem brought because of the defect of this syndeton, but its profile is presented narrow, lower wide shape, volume is larger, is not easy to carry; And due to the tapered design of fingerstall 01, therefore fingerhold power is inhomogeneous.In addition, measuring cell, data handling component and connection line are all arranged in the casing of Fingerstall-type blood oxygen measuring apparatus, this is unfavorable for the assembly manipulation of Fingerstall-type blood oxygen measuring apparatus, easily produce underproof product, and clean laggard luggage timing and easily cause the damage of the electronic component of Fingerstall-type blood oxygen measuring apparatus taking apart.
Summary of the invention
Technical problem to be solved by this invention is exactly for the above-mentioned defect existing in prior art, and a kind of finger-clip type oximeter is provided, and not only can avoid pivotally connected brought problem; But also have, chucking power is even, volume is little and be easy to the advantages such as installation.
Solve the problems of the technologies described above adopted technical scheme and be to provide a kind of finger-clip type oximeter, comprise the upper shell and the lower house that are oppositely arranged, also comprise be arranged between described upper shell and lower house and with described upper shell, lower house, be connected for holding the fingerstall of finger, described fingerstall has contractility in the stacked direction at described upper shell, lower house in the time that finger inserts in it, so that described upper shell and lower house clamp finger.
Wherein, described fingerstall is the sealing cavity volume that is provided with an opening.
Wherein, described fingerstall comprises upper cover, lower cover, two ruffles and bonnet, described upper cover and lower cover are oppositely arranged, and described upper cover and described upper shell are oppositely arranged, described lower cover and described lower house are oppositely arranged, described two ruffles are arranged on the both sides of described upper cover and lower cover symmetrically, and described upper cover, lower cover and two ruffles surround a cavity volume, and described bonnet is arranged on an end of described cavity volume also by this end-enclosed.
Wherein, in described fingerstall and near the position of described bonnet, be provided with positioning convex.
Wherein, in described fingerstall, between described positioning convex and described bonnet, be provided with wiring space, for connecting the wire that is arranged on the electric component in upper shell and lower house through described wiring space.
Wherein, described fingerstall is made of one piece.
Wherein, described fingerstall adopts silicone rubber to make.
Wherein, described fingerstall is connected with described upper shell and lower house by hot pressing mode.
Wherein, described fingerstall is connected with described upper shell and lower house with snap fit by link.
Wherein, described link comprises link body and is fixed on the grab on described link body, under the upper cover of described upper shell and described fingerstall and described lower house and described fingerstall, cover the hole clipping that multiple and described grab matches is set symmetrically, described link makes described grab be connected in the hole clipping of described upper shell through after the hole clipping of described fingerstall upper cover in described cavity volume, thereby described fingerstall is connected with described upper shell, in like manner, described link makes the grab of described link be connected in the hole clipping of described lower house through after the hole clipping of described fingerstall lower cover in described cavity volume, thereby described fingerstall is connected with described lower house.
Wherein, be provided with multiple described grabs on described link body, described fingerstall is all connected by described link with described upper shell and described lower house.
Wherein, the contour line of described link body projection on horizontal plane and the former undersized identical with described fingerstall contour line shape of projection on horizontal plane.
Wherein, described in each, link body is provided with a described grab, and described fingerstall is all connected by multiple described links with described lower house with described upper shell and described fingerstall.
The present invention has the following advantages:
Finger-clip type oximeter provided by the invention independently fingerstall is arranged between upper shell and lower house, in the time that finger inserts described fingerstall, because described fingerstall itself has contractility, it not only can make described upper shell and lower house clamp described finger, and it is more even to make to be applied to chucking power on finger, thereby improve the comfort level of finger-clip type oximeter.In addition, fingerstall is arranged between upper shell and lower house, fingerstall only need deform and finger can be inserted in it in the stacked direction of upper shell, lower house, and make upper shell, lower house near finger, the more compact structure that this can make finger-clip type oximeter, reduces the volume of finger-clip type oximeter.And measuring cell, data handling component can be placed in upper shell, lower house, are conducive to the assembling of finger-clip type oximeter, thereby make the assembling process after manufacture and dismounting are cleaned simpler.In addition, utilize fingerstall connection upper shell and lower house can avoid the problem that adopts pivotally connected mode to bring.
Accompanying drawing explanation
Fig. 1 is a kind of structure diagram of Fingerstall-type blood oxygen measuring apparatus;
Fig. 2 is the structure diagram of finger-clip type oximeter provided by the invention;
Fig. 3 is the Split type structure figure of finger-clip type oximeter provided by the invention; And
Fig. 4 is the sectional view of finger-clip type oximeter provided by the invention along its width; And
Fig. 5 is finger-clip type oximeter provided by the invention sectional view along its length.
The specific embodiment
For making those skilled in the art person understand better technical scheme of the present invention, below in conjunction with accompanying drawing, finger-clip type oximeter provided by the invention is elaborated.
Fig. 2 is the structure diagram of finger-clip type oximeter provided by the invention; Fig. 3 is the Split type structure figure of finger-clip type oximeter provided by the invention; Fig. 4 is the sectional view of finger-clip type oximeter provided by the invention along its width, and Fig. 5 is finger-clip type oximeter provided by the invention sectional view along its length.See also Fig. 2-Fig. 5, finger-clip type oximeter comprises upper shell 1, fingerstall 2, lower house 3, luminescence unit 6, center module 4 and battery 9.Fingerstall 2 is for holding finger, and it is arranged between upper shell 1 and lower house 3, and is connected with upper shell 1, lower house 3.In the time that finger inserts fingerstall 2, fingerstall 2 has contractility in the stacked direction of upper shell 1 and lower house 3, fingerstall 2 applies active force in opposite directions to described upper shell 1 and lower house 3, so that upper shell 1 and lower house 3 clamp finger, thereby it is upper that finger-clip type oximeter is fixed on to finger, meanwhile, because fingerstall 2 inwardly shrinks, therefore, can reduce that natural light enters fingerstall 2 and the precision that affects finger-clip type oximeter and measure blood oxygen.Center module 4 is arranged in upper shell 1, and luminescence unit 6 and battery 9 are arranged in lower house 3.
As shown in Figure 3 and Figure 4, upper shell 1 comprises upper casing 11, upper mesochite 12 and upper cover plate 13, and upper casing 11 and upper mesochite 12 are oppositely arranged, and link together with snap fit.Between upper casing 11 and upper mesochite 12, form a upper shell space, center module 4 is arranged in upper shell space, and upper cover plate 13 is arranged on upper casing 11 surfaces, is not damaged for the protection of center module 4.Center module 4 comprises receiving element 7, processing unit (not shown), display unit 41, Power Management Unit 42 and data communication interface (not shown), wherein, the optical signal that receiving element 7 sends for receiving luminescence unit 6, and optical signal is sent to processing unit; Processing unit is according to obtaining blood oxygen saturation from the optical signal of receiving element 7; The blood oxygen saturation that display unit 41 obtains for display processing unit; Data communication interface is for the connection between receiving element 7 and processing unit and processing unit and display unit 41, to carry out the transmission of data.Be provided with mesochite loophole 121 in upper mesochite 12 position relative with receiving element 7, the measurement light that carrys out selfluminous cell 6 is received unit 7 through upper mesochite loophole 121 and receives.
Refer to Fig. 3, fingerstall 2 adopts the material such as such as silicone rubber soft silica gel to make, it comprises upper cover 22, lower cover 23, the first ruffle 24, the second ruffle 25 and bonnet (not shown), wherein, upper cover 22 and lower cover 23 are oppositely arranged, the first ruffle 24, the second ruffle 25 are arranged on the both sides of upper cover 22 and lower cover 23 symmetrically, and are connected with upper cover 22 and lower cover 23.The first ruffle 24 is identical with the folding number of plies of the second ruffle 25, so that fingerstall 2 has uniform elasticity.Upper cover 22, lower cover 23, the first ruffle 24 and the second ruffle 25 surround the cavity volume (or sleeve) of a both ends open, and bonnet 26 is arranged on an end of cavity volume and by this end-enclosed, is about to the wherein closure of openings of one end.Like this, upper cover 22, lower cover 23, the first ruffle 24, the second ruffle 25 and bonnet 26 surround a sealing cavity volume that only has an opening 21, that is, fingerstall 2 is for to be provided with the sealing cavity volume of an opening, thus the precision that can reduce like this natural light and enter cavity volume and improve Oximetry.While measuring blood oxygen, finger stretches in fingerstall 2 from this opening 21.The present embodiment fingerstall 2 can be made of one piece, and can be to be also spliced by above-mentioned upper cover 22, lower cover 23, the first ruffle 24, the second ruffle 25 and bonnet 26.
In the present embodiment, the both sides of fingerstall 2 adopt identical the first ruffle 24 and the second ruffle 25 of contractility, in the time that finger inserts fingerstall 2, the first ruffle 24 and the second ruffle 25 produce contractility because being pulled outwardly to stretch, thereby make upper shell 1 and lower house 3 near finger, finger-clip type oximeter is fixed on finger simultaneously.Because the direction of the contractility of the first ruffle 24 and the second ruffle 25 is all the stacked directions at upper shell 1 and lower house 3, and contractility is even, therefore, it is even that fingerstall 2 acts on chucking power (being contractility) on finger, thereby improve the comfort level of finger-clip type oximeter.Certainly, the structure that produces the fingerstall 2 of even contractility is not limited to aforementioned structure, also can adopt and can apply other structure of equal-sized active force at upper shell 1 and the stacked direction of lower house 3, the fingerstall structure that can apply equal-sized active force in upper shell 1 and the stacked direction of lower house 3 that is to say, as long as all can and realize the comfort level that improves finger-clip type oximeter for the present invention.
As shown in Figure 5, be provided with the positioning convex 27 outstanding towards opening 21 directions in the interior position near bonnet 26 of fingerstall 2, stretch into the degree of depth of fingerstall 2 for limit finger in the time measuring blood oxygen.Particularly, in the time measuring blood oxygen, in the time stretching into the finger end of fingerstall 2 and touch this positioning convex 27, show the position of current finger in being suitable for measuring, can obtain like this measurement result accurately.Certainly, the projected direction of positioning convex 27 is only not limited to towards opening direction outstanding, can determine set-up mode that finger inserts the fingerstall degree of depth all can, as outstanding towards bonnet 26 directions in positioning convex 27.
Between positioning convex 27 and bonnet 26, be provided with wiring space 28, be positioning convex 27 with bonnet 26 at the length direction of finger-clip type oximeter in a distance, make to form a space between positioning convex 27 and bonnet 26, for connecting the wire that is arranged on the electric component in upper shell 1 and lower house 3 through this wiring space 28, wiring space 28 is the cablings for finger-clip type oximeter.The present embodiment finger-clip type oximeter is owing to being provided with independently wiring space 28, therefore, wire can not be exposed to the outside of finger-clip type oximeter, even if the redundant length of wire is longer, also can place it in completely in wiring space 28, and, when upper shell 1 and lower house 3 are in the time that the vertical direction of finger-clip type oximeter is opened,, when finger inserts fingerstall 2, wire also can not expose.Therefore, wiring space 28 can be avoided exposing because of wire the aesthetic property that affects finger-clip type oximeter.On the other hand, wiring space 28 can increase again the amount of redundancy of wire, thereby can avoid the relative motion of upper shell 1 and lower house 3 and cause harness damage, and then improves the service life of finger-clip type oximeter.On upper cover 22 and lower cover 23, be respectively equipped with upper cover loophole 221 and lower cover loophole 231, upper cover loophole 221 and lower cover loophole 231 are arranged on the relative position place with luminescence unit 6, can be through upper cover 22 and lower cover 23 and received unit 7 receives so that measure light.Be provided with the protecting film of printing opacity in upper cover loophole 221 and lower cover loophole position, to avoid luminescence unit 6 and receiving element 7 to insert or exit in the process of fingerstall 2 damaged at finger.
The present embodiment link 5 is structure as a whole, and link body 51 is structure as a whole.But link body 51 also can be divided into four sections, be divided into four sections according to four limits of finger-clip type oximeter, each section is provided with one or more grabs 52 according to its length.When fingerstall 2 is connected with upper shell 1 or lower house 3, respectively four sections of link bodies 51 are connected in the hole clipping 8 of upper mesochite 12 or lower mesochite 32 accordingly.In addition, link 5 also can be arranged to: a grab 52 is set on each link body 51, an i.e. corresponding grab 52 of link body 51, namely link is set to independently linkage unit, when fingerstall 2 is connected with upper shell 1 or lower house 3, multiple links 5 are connected to respectively in the different hole clippings 8 on upper mesochite 12 or lower mesochite 32.Be understood that, with respect to subsection setup or be arranged to independently for linkage unit, adopt the link 5 of integrative-structure to connect the process of fingerstall 2 and upper shell 1, lower house 3 simpler.
In the present embodiment, fingerstall 2 also can link together by hot pressing mode with upper shell 1 and lower house 3.Luminescence unit 6 can make luminous tube, and receiving element 7 can be photosensitive tube.
The finger-clip type oximeter that the present embodiment provides independently fingerstall is arranged between upper shell and lower house, in the time that finger inserts described fingerstall, because described fingerstall itself has contractility, described fingerstall not only can make described upper shell and lower house clamp described finger, and it is more even to make to be applied to chucking power on finger, thereby improve the comfort level of finger-clip type oximeter.In addition, fingerstall is arranged between upper shell and lower house, fingerstall only need deform and finger can be inserted in it in the stacked direction of upper shell, lower house, and make upper shell, lower house near finger, the more compact structure that this can make finger-clip type oximeter, reduces the volume of finger-clip type oximeter.And measuring cell, data handling component can be placed in upper shell, lower house, are conducive to the assembling of finger-clip type oximeter, thereby make the assembling process after manufacture and dismounting are cleaned simpler.In addition, utilize fingerstall connection upper shell and lower house can avoid the problem that adopts pivotally connected mode to bring.
Be understandable that, above embodiment is only used to principle of the present invention is described and the illustrative embodiments that adopts, but the present invention is not limited thereto.For those skilled in the art, without departing from the spirit and substance in the present invention, can make various modification and improvement, these modification and improvement are also considered as protection scope of the present invention.
Claims (10)
1. a finger-clip type oximeter, comprise the upper shell and the lower house that are oppositely arranged, it is characterized in that, also comprise be arranged between described upper shell and lower house and with described upper shell, lower house connect for holding the fingerstall of finger, described fingerstall is the sealing cavity volume that is provided with an opening, it comprises upper cover, lower cover, two ruffles and bonnet, described upper cover and lower cover are oppositely arranged, and described upper cover and described upper shell are oppositely arranged, described lower cover and described lower house are oppositely arranged, described two ruffles are arranged on the both sides of described upper cover and lower cover symmetrically, described upper cover, lower cover and two ruffles surround a cavity volume, described bonnet is arranged on an end of described cavity volume also by this end-enclosed, and described fingerstall adopts soft silica gel to make, described fingerstall in the time that finger inserts in it at described upper shell, in the stacked direction of lower house, there is contractility, so that described upper shell and lower house clamp finger.
2. finger-clip type oximeter according to claim 1, is characterized in that, in described fingerstall and near the position of described bonnet, is provided with positioning convex.
3. finger-clip type oximeter according to claim 2, it is characterized in that, in described fingerstall, between described positioning convex and described bonnet, be provided with wiring space, for connecting the wire that is arranged on the electric component in upper shell and lower house through described wiring space.
4. finger-clip type oximeter according to claim 1, is characterized in that, described fingerstall is made of one piece.
5. finger-clip type oximeter according to claim 1, is characterized in that, described fingerstall is connected with described upper shell and lower house by hot pressing mode.
6. finger-clip type oximeter according to claim 1, is characterized in that, described fingerstall is connected with described upper shell and lower house with snap fit by link.
7. finger-clip type oximeter according to claim 6, it is characterized in that, described link comprises link body and is fixed on the grab on described link body, under the upper cover of described upper shell and described fingerstall and described lower house and described fingerstall, cover the hole clipping that multiple and described grab matches is set symmetrically, described link makes described grab be connected in the hole clipping of described upper shell through after the hole clipping of described fingerstall upper cover in described cavity volume, thereby described fingerstall is connected with described upper shell, in like manner, described link makes the grab of described link be connected in the hole clipping of described lower house through after the hole clipping of described fingerstall lower cover in described cavity volume, thereby described fingerstall is connected with described lower house.
8. finger-clip type oximeter according to claim 7, is characterized in that, is provided with multiple described grabs on described link body, and described fingerstall is all connected by described link with described upper shell and described lower house.
9. finger-clip type oximeter according to claim 8, is characterized in that, the contour line of described link body projection on horizontal plane and the former undersized identical with described fingerstall contour line shape of projection on horizontal plane.
10. finger-clip type oximeter according to claim 7, it is characterized in that, described in each, link body is provided with a described grab, and described fingerstall is all connected by multiple described links with described lower house with described upper shell and described fingerstall.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110047713.XA CN102648848B (en) | 2011-02-28 | 2011-02-28 | Fingertip-type blood oxygen measuring instrument |
| PCT/CN2012/070675 WO2012116583A1 (en) | 2011-02-28 | 2012-01-20 | Finger pulse oximeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110047713.XA CN102648848B (en) | 2011-02-28 | 2011-02-28 | Fingertip-type blood oxygen measuring instrument |
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| CN102648848A CN102648848A (en) | 2012-08-29 |
| CN102648848B true CN102648848B (en) | 2014-05-28 |
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| CN201110047713.XA Active CN102648848B (en) | 2011-02-28 | 2011-02-28 | Fingertip-type blood oxygen measuring instrument |
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| CN (1) | CN102648848B (en) |
| WO (1) | WO2012116583A1 (en) |
Families Citing this family (3)
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| CN104970803A (en) * | 2015-07-08 | 2015-10-14 | 中国医学科学院生物医学工程研究所 | Probe with pulse blood oxygen detection and muscle relaxation detection function at same time |
| WO2020227887A1 (en) * | 2019-05-13 | 2020-11-19 | 深圳市蓝瑞格生物医疗科技有限公司 | Finger clip type oximetry device adaptive to thick and fine fingers |
| CN113729632A (en) * | 2021-09-08 | 2021-12-03 | 华东理工大学 | Pulse-taking bracelet mechanical device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3810411A1 (en) * | 1988-03-26 | 1989-10-12 | Nicolay Gmbh | DEVICE FOR FIXING A SENSOR, IN PARTICULAR A SENSOR FOR OXIMETRIC MEASUREMENTS |
| CN201290680Y (en) * | 2008-11-28 | 2009-08-19 | 深圳市理邦精密仪器有限公司 | Finger clipping type blood oxygen sensor with shade effect |
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2011
- 2011-02-28 CN CN201110047713.XA patent/CN102648848B/en active Active
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- 2012-01-20 WO PCT/CN2012/070675 patent/WO2012116583A1/en active Application Filing
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| WO2003020129A1 (en) * | 2001-08-29 | 2003-03-13 | Bci, Inc. | Finger oximeter with finger grip suspension system |
| WO2007041215A2 (en) * | 2005-09-30 | 2007-04-12 | Nellcor Puritan Bennett Llc | Folding medical sensor and technique for using the same |
| CN201098123Y (en) * | 2007-10-11 | 2008-08-13 | 深圳市索莱瑞医疗技术有限公司 | Per person type soft fingertip blood oxygen saturation detector |
| CN101411618A (en) * | 2007-10-17 | 2009-04-22 | 潘卫江 | Finger type instrument for detecting sphygmus and blood oxygen saturation |
| EP2201891A1 (en) * | 2008-03-21 | 2010-06-30 | Beijing Choice Electronic Techology Co., Ltd. | Soft finger cot blood oxygen measuring device |
| CN201585988U (en) * | 2009-11-04 | 2010-09-22 | 北京超思电子技术有限责任公司 | Fingertip oximeter with non-pivot structure |
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| Publication number | Publication date |
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| CN102648848A (en) | 2012-08-29 |
| WO2012116583A1 (en) | 2012-09-07 |
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