CN209203463U - A kind of ultrasonic development enhancing double-cavity ovum taking needle - Google Patents

A kind of ultrasonic development enhancing double-cavity ovum taking needle Download PDF

Info

Publication number
CN209203463U
CN209203463U CN201821551069.3U CN201821551069U CN209203463U CN 209203463 U CN209203463 U CN 209203463U CN 201821551069 U CN201821551069 U CN 201821551069U CN 209203463 U CN209203463 U CN 209203463U
Authority
CN
China
Prior art keywords
needle
ultrasonic
needle tubing
ultrasonic development
tubing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201821551069.3U
Other languages
Chinese (zh)
Inventor
黄春辉
刘安东
杨月娣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Kangdelai Enterprise Development Group Co Ltd
Original Assignee
Shanghai Kangdelai Enterprise Development Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Kangdelai Enterprise Development Group Co Ltd filed Critical Shanghai Kangdelai Enterprise Development Group Co Ltd
Priority to CN201821551069.3U priority Critical patent/CN209203463U/en
Application granted granted Critical
Publication of CN209203463U publication Critical patent/CN209203463U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses a kind of ultrasonic developments to enhance double-cavity ovum taking needle, including puncture needle, handle, irrigating catheter, sealed connector, conduit sleeve, negative pressure catheter, silica gel plug, vacuum pipeline and cone joint, the puncture needle includes the interior needle and outer needle being sequentially coaxially arranged from the inside to the outside, the outer needle includes needle tubing and coupled needle point, and ultrasonic development enhancing band group is provided in the outside wall surface of the needle tubing;The needle tubing uses isometrical needle tubing;The ultrasonic development enhancing band group enhances band comprising several ultrasonic developments, several ultrasonic developments enhancing band is equidistantly sequentially distributed along the axial direction of the needle tubing in the outside wall surface of the needle tubing.The ultrasonic development of the utility model enhances double-cavity ovum taking needle, makes the ultrasonic imaging of puncture needle that light and dark scale be presented, directly observes depth of needle in real time on the display screen of ultrasonic image-forming system in easily operated person's art, keep surgical procedure more accurate.

Description

A kind of ultrasonic development enhancing double-cavity ovum taking needle
Technical field
The utility model relates to a kind of ultrasonic developments to enhance double-cavity ovum taking needle, super for Issues of Human Assisted Reproductive Technologies (ART) Acoustic imaging guides oocyte retrieval, belongs to medical instruments field.
Background technique
In the medical field, it is guided by ultrasonography, puncture needle is used to puncture to acquire body target site Liquid, tissue, cell or importing medical fluid etc..In art, doctor is placed on ultrasonic probe to site of puncture or to site of puncture body surface, from The raking of probe.On the display screen of imaging system, it can be seen that institutional framework, needle and needle point are worn to accurately hold Pricker reaches target position.In the actual operation process, since puncture needle outside wall surface is smooth, it is anti-that mirror surface is generated to incident acoustic wave It penetrates, and puncture needle and the angle of ultrasonic beam are smaller (angle of needle more tilts), can be got over by the received sound wave of ultrasonic probe Few, puncture needle is less susceptible to develop, and can't see needle or syringe needle on the display screen of ultrasonic image-forming system, and it is fixed to greatly reduce ultrasound The accuracy of position puncture needle.It is related to Issues of Human Assisted Reproductive Technologies (Assisted Reproductive Technology, ART) neck Domain also generallys use ultrasonic imaging guidance and is punctured specifically in Oocyte Pickup by Vagina Puncturing.It is well known, in such hand In art, above-mentioned puncture needle or the unsharp problem of syringe needle development are equally existed.
For the unsharp problem of puncture needle ultrasonic development, existing patent proposes solution:
Chinese patent 200580051150.4 discloses a kind of puncturing needle for ultrasound wave, is formed in the front end of needle body There is sharp point, in the specified position of needle body, by the pit of triangular pyramid at least formed with a corner cube mirror.Even if When the angle that the axis of the exposure pathways of ultrasonic wave and puncture needle is formed is smaller, the puncture needle that can also clearly be imaged.
Chinese patent 200610066108.6 provides a kind of puncture needle, by having the outer cylinder of the tubulose of sword head in front end Needle and insertion are combined intracavitary interior needle in above-mentioned outer cylinder needle and are constituted;To from the sword head of above-mentioned outer cylinder needle to the region of cardinal extremity Recessed processing is implemented in periphery, and implements coarse processing to the periphery since the front end of above-mentioned interior needle to the region of cardinal extremity.In this way, In ultrasonic image-guided puncture, it can be seen that the distincter ultrasonic development until sword head end of puncture needle.
However, in a kind of technical solution of puncturing needle for ultrasound wave disclosed in the patent 200580051150.4, although its The ultrasonic imaging of front end is clear, and the part ultrasonic development that remaining is not processed is unsatisfactory.In addition, for without resinous coat Puncture needle will increase the penetration Resistance of needle using the pit of electric machining or punching press production triangular pyramid.Patent In a kind of puncture needle disclosed in 200610066108.6, if remain cannot will for the coarse processing supplement outer cylinder needle of non-used interior needle Ultrasonic reflections to diagnostic ultrasound equipment test section position, due to remained in the recessed processing of the periphery of outer cylinder needle plus The smooth outer peripheral surface of work, puncture needle can be decreased obviously until the ultrasonic development effect of its sword head end.
For the puncture needle for being used to take ovum in oocyte retrieval, in the prior art, generally by the nearly needle point of puncture needle Region carries out specially treated, such as processing groove or protrusion, and the region of the nearly needle point of puncture needle is made to have more ultrasonic waves to be popped one's head in It receives, to enhance the ultrasonic development in the region.
United States Patent (USP) US7470249 discloses a kind of suction for taking out egg mother cell and rinses needle assemblies, in the component Flushing needle is characterized in that: improving the ultrasonic echo of flushing needle such as impression, annular knurl by specially treated to the front end of flushing needle Feature.
Chinese patent 201720152801.9 discloses a kind of image feedback and takes ovum needle, and the front end of stainless steel needle tubing is equipped with abdomen Sword needle point or back abdomen twolip needle point, the stainless pin pipe surface on rear side of needle point are equipped with image and feed back area;Image feeds back area Surface is in point shape, frosted shape or shape of threads.
Chinese patent 201220497802.4 discloses a kind of puncture of oocyte collector with ultrasonic wave positioning line Needle comprising needle tubing is formed with needle point on the front end face of needle tubing, and ultrasonic wave identification line is formed on the front end outer wall of needle tubing, is surpassed Sound wave identification line is made of multiple annular recess for being arranged successively and being parallel to each other along needle tubing central axes.It is specific: adjacent ring There is certain interval between shape groove;The width of annular recess is 0.1mm~1mm;Ultrasonic wave identifies that the axial length of line is 5mm ~30mm.
What Chinese patent 201810132418.6 disclosed a kind of suitable one-handed performance takes ovum system, puncture needle in the system Be characterized in that: the front end of the puncture needle is equipped with ultrasonic wave and identifies line;Ultrasonic wave identifies that the axial length of line is 4mm~30mm. In the specific embodiment of the patent, ultrasonic wave identifies that line can identify that line, loop-shaped ultrasound identify line by more for loop-shaped ultrasound Dotted groove is arranged to constitute.
It can be seen that the technology of above-mentioned patent disclosure carries out specially treated by the front end to needle mostly, such as before needle Grooves or the protrusions such as dotted, frosted shape, shape of threads, ring-type are added in end, enhance the ultrasonic imaging of syringe needle, are promoted to a certain extent The accuracy of puncture needle localization by ultrasonic.Although can be obtained in a kind of puncture needle disclosed in patent 200610066108.6 until Distincter ultrasonic development until the sword head end of puncture needle, if removing coarse processing (such as puncture needle only list of interior needle Pipe construction), merely with the recessed processing of the periphery of outer cylinder needle, will lead to until the ultrasonic development of puncture needle sword head end is not very clear Clear, the validity of the method is lowered.
In addition, during ova harvest, especially puncture carry out when, operator generally requires sight from display screen It moves on on puncture needle, confirms depth of needle by observing puncture needle on hand, doctor, which operates, to be inconvenient, and is also affected The accuracy of surgical procedure.Well known, the effective length of the puncture needle of ova harvest is longer, about 30cm~35cm, even if The puncture needle head ultrasonic imaging of prior art is clear and legible, and due to puncture needle, remaining position for not carrying out specially treated surpasses Sound development is difficult, and doctor can not directly observe depth of needle in real time on a display screen, also reduces the accuracy of surgical procedure.
Utility model content
The purpose of the utility model is to overcome the defects of the prior art, provide a kind of ultrasonic development enhancing double-cavity ovum taking needle, The ultrasonic imaging of puncture needle is set to be presented light and dark scale, directly in the display screen of ultrasonic image-forming system in easily operated person's art Upper observation depth of needle in real time, keeps surgical procedure more accurate.
Realizing the technical solution of above-mentioned purpose is: a kind of ultrasonic development enhances double-cavity ovum taking needle, including puncture needle, handle, Irrigating catheter, sealed connector, conduit sleeve, negative pressure catheter, silica gel plug, vacuum pipeline and cone joint are socketed on the puncture needle There is protective case, the puncture needle, handle, conduit sleeve, negative pressure catheter and silica gel plug are sequentially connected, and the sealed connector passes through described Irrigating catheter is connected with the handle, and the cone joint is connected by the vacuum pipeline with the silica gel plug;
The puncture needle includes the interior needle and outer needle being sequentially coaxially arranged from the inside to the outside, and the negative pressure catheter passes sequentially through institute It states conduit sleeve and handle is connected to the interior needle, the irrigating catheter passes through logical between the handle and the interior needle and outer needle Road connection;
The outer needle includes needle tubing and coupled needle point, and ultrasonic development enhancing is provided in the outside wall surface of the needle tubing Band group;
The needle tubing uses isometrical needle tubing;
The ultrasonic development enhancing band group enhances band comprising several ultrasonic developments, several described ultrasonic developments enhance band Axial direction along the needle tubing is equidistantly sequentially distributed in the outside wall surface of the needle tubing;
Each ultrasonic development enhancing band is made of the line style groove group being axially arranged along the needle tubing;
Line style in the line style groove group is in periodically variable curve, the axis of the curve and the needle tubing Axis is parallel or is staggered;
The cross section of the needle tubing is divided into several areas along the radial of the needle tubing by the line style groove group.
A kind of above-mentioned ultrasonic development enhances double-cavity ovum taking needle, wherein the curve uses broken line.
A kind of above-mentioned ultrasonic development enhances double-cavity ovum taking needle, wherein the quantity of the ultrasonic development enhancing band is at least 3 It is a.
A kind of above-mentioned ultrasonic development enhances double-cavity ovum taking needle, wherein each ultrasonic development enhancing band is along the needle The length of pipe axial direction is 10mm~60mm, the spacing per adjacent two between the ultrasonic developments enhancing band be 20mm~ 100mm。
A kind of above-mentioned ultrasonic development enhances double-cavity ovum taking needle, wherein each ultrasonic development enhancing band is along the needle The equal length of pipe axial direction is equal per the spacing between two adjacent ultrasonic development enhancing bands.
A kind of above-mentioned ultrasonic development enhances double-cavity ovum taking needle, wherein radial direction of the line style groove group along the needle tubing The cross section of the needle tubing is divided into 3~4 areas.
A kind of above-mentioned ultrasonic development enhances double-cavity ovum taking needle, wherein the line style groove group includes that at least three line style is recessed Slot, the width of each line style groove are no more than 600um, and depth is no more than 20um.
The ultrasonic development of the utility model enhances double-cavity ovum taking needle, due to the puncture needle of ultrasonic development enhancing double-cavity ovum taking needle Needle tubing on be evenly distributed with it is multiple be made of line style groove group ultrasonic developments enhancing bands, on the display screen of imaging system, Ultrasonic development enhancing band is clear zone, and enhancing spaced smooth needle tubing outside wall surface by ultrasonic development is dark space, i.e., puncture needle is super Light and dark scale is presented in acoustic imaging, convenient for directly observed in real time on the display screen of ultrasonic image-forming system in operator's art into Needle depth promotes the accuracy of surgical procedure.
Detailed description of the invention
Fig. 1 is that the ultrasonic development of the utility model enhances the structural schematic diagram of double-cavity ovum taking needle;
Fig. 2 is the cross-sectional view that the ultrasonic development of the utility model enhances the puncture needle of double-cavity ovum taking needle;
Fig. 3 is the outer needle shaft mapping that the ultrasonic development of the utility model enhances the puncture needle of double-cavity ovum taking needle;
Fig. 4 is the outer needle top view that the ultrasonic development of the utility model enhances the puncture needle of double-cavity ovum taking needle;
Fig. 5 is the circumference expanding map that ultrasonic development enhances band;
Fig. 6 is the enlarged drawing that ultrasonic development enhances band;
Fig. 7 be Fig. 6 in B~B to sectional view (along puncture needle axial direction);
Fig. 8 be Fig. 6 in A~A to sectional view (along puncture needle radial direction).
Specific embodiment
In order to make those skilled in the art be better understood when the technical solution of the utility model, below with reference to attached Its specific embodiment is described in detail in figure:
Fig. 1, Fig. 2, Fig. 3 and Fig. 4 are please referred to, a kind of ultrasonic development of the utility model enhances double-cavity ovum taking needle, including wears Pricker 10, handle 20, irrigating catheter 30, sealed connector 40, conduit sleeve 50, negative pressure catheter 60, silica gel plug 70,80 and of vacuum pipeline Cone joint 90 is socketed with protective case 101, puncture needle 10, handle 20, conduit sleeve 50, negative pressure catheter 60 and silicon on puncture needle 10 Rubber plug 70 is sequentially connected, and sealed connector 40 is connected by irrigating catheter 30 with handle 20, and cone joint 90 passes through vacuum pipeline 80 It is connected with silica gel plug 70.
Puncture needle 10 includes the interior needle 12 and outer needle 11 being sequentially coaxially arranged from the inside to the outside, and negative pressure catheter 60, which passes sequentially through, leads Pipe sleeve 50 and handle 20 are connected to interior needle 12, and irrigating catheter 30 is connected by the channel 13 between handle 20 and interior needle 12 and outer needle 11 It is logical.
Outer needle 11 includes needle tubing 1 and coupled needle point 100, and ultrasonic development enhancing is provided in the outside wall surface of needle tubing 1 Band group 2;Needle tubing 1 uses isometrical needle tubing;Ultrasonic development enhancing band group 2 enhances band 3 comprising several ultrasonic developments, several ultrasounds Development enhancing band 3 is equidistantly sequentially distributed along the axial direction of needle tubing 1 in the outside wall surface of needle tubing 1.
Referring to Fig. 5, each ultrasonic development enhancing band 3 is made of the line style groove group 4 being axially arranged along needle tubing 1;Line Line style in type groove group 4 is in periodically variable curve, and curve is preferably sine curve 41 or broken line 42, and curve Axis o is parallel with the axis o ' of needle tubing 1 or is staggered, and when being staggered, the axis o ' of the axis o of curve and needle tubing 1 it Between angle be in 15 ° or 165 ° of angles.The cross section of needle tubing 1 is divided into several along the radial of needle tubing 1 by line style groove group 4 Area, i.e., radial along needle tubing 1, line style groove group 4 divides equally 360 ° of cross circular section of needle tubing 1;Line style groove group 4 uses ultrashort arteries and veins Impulse light is process the outside wall surface of needle tubing 1.
Please refer to Fig. 6 to Fig. 8, it is well known in a kind of ultrasonic development enhancing double-cavity ovum taking needle, to acquire in oocyte retrieval The needle length of egg mother cell can specifically determine according to requirements mostly in 30cm or so.The length of puncture needle in the present embodiment Degree is preferably 30cm.
Fig. 3 and Fig. 4 are please referred to again, and ultrasonic development enhancing band group 2 includes that 5 ultrasonic developments enhance band 3, each ultrasonic development Enhance the equal length axial along needle tubing 1 of band 3, Mei Gechao equal per the spacing between adjacent two ultrasonic developments enhancing band 3 Sound development enhancing band 3 is 30mm along the axial length a of needle tubing 1, between adjacent two ultrasonic developments enhancing band It is 30mm away from b.Each ultrasonic development enhancing band 3 is made of the line style groove group 4 being axially arranged along needle tubing 1.
Fig. 7 and Fig. 8 are please referred to again, and along the radial direction of needle tubing 1, the cross section of needle tubing 1 is divided into 3 areas by line style groove group 4. Line style groove group 4 is made of 6 line style grooves 43, i.e., each area includes two line style grooves 43, and each line style groove 43 Width is no more than 600um, and depth is no more than 20um.Preferably, the cross sectional shape of line style groove 43 is semicircle, i.e., line style is recessed Shape of the slot 43 on the cross section of needle tubing 1 is semicircle.The width of line style groove 43 is 100um, depth 20um.
The line style groove 43 in semicircle section (width 100um, depth 20um) is used to constitute line style groove group 4, and The cross circular section of needle tubing 1 is divided into 3 areas by setting line style groove group 4, no matter the angle of puncture needle and ultrasonic beam such as What, can make part (the smooth needle not being processed in the ultrasonic imaging and surrounding tissue and needle tubing 1 of ultrasonic development enhancing band 3 Pipe outer wall face) significantly distinguish.Moreover, because ultrasonic development enhancing band group 2 on needle tubing 1 be not processed part it is (smooth Needle tubing outside wall surface) light and dark state is presented in ultrasonic imaging, along with the size design of the two itself, be convenient for operator's art In directly observe depth of needle in real time on the display screen of ultrasonic image-forming system, improve the accuracy of surgical procedure.
In conclusion the ultrasonic development of the utility model enhances double-cavity ovum taking needle, the ultrasonic imaging of puncture needle is presented bright Scale between dark phase directly observes depth of needle on the display screen of ultrasonic image-forming system in easily operated person's art in real time, makes hand Art operation is more accurate.
Those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate that this is practical new Type, and be not used as the restriction to the utility model, as long as in the spirit of the utility model, to the above Variation, the modification of embodiment will all be fallen in the Claims scope of the utility model.

Claims (7)

1. a kind of ultrasonic development enhances double-cavity ovum taking needle, which is characterized in that including puncture needle, handle, irrigating catheter, sealed connect Head, conduit sleeve, negative pressure catheter, silica gel plug, vacuum pipeline and cone joint are socketed with protective case on the puncture needle;
The puncture needle, handle, conduit sleeve, negative pressure catheter and silica gel plug are sequentially connected, and the sealed connector passes through the flushing Conduit is connected with the handle, and the cone joint is connected by the vacuum pipeline with the silica gel plug;
The puncture needle includes the interior needle and outer needle being sequentially coaxially arranged from the inside to the outside, and the negative pressure catheter passes sequentially through described lead Pipe sleeve and handle are connected to the interior needle, and the irrigating catheter is connected by the channel between the handle and the interior needle and outer needle It is logical;
The outer needle includes needle tubing and coupled needle point, and ultrasonic development enhancing band is provided in the outside wall surface of the needle tubing Group;
The needle tubing uses isometrical needle tubing;
The ultrasonic development enhancing band group enhances band comprising several ultrasonic developments, several ultrasonic developments enhancing band is along institute The axial direction for stating needle tubing is equidistantly sequentially distributed in the outside wall surface of the needle tubing;
Each ultrasonic development enhancing band is made of the line style groove group being axially arranged along the needle tubing;
Line style in the line style groove group is in periodically variable curve, the axis of the axis of the curve and the needle tubing In parallel or it is staggered;
The cross section of the needle tubing is divided into several areas along the radial of the needle tubing by the line style groove group.
2. a kind of ultrasonic development according to claim 1 enhances double-cavity ovum taking needle, which is characterized in that the curve is using folding Line.
3. a kind of ultrasonic development according to claim 1 enhances double-cavity ovum taking needle, which is characterized in that the ultrasonic development increases The quantity of strong band is at least 3.
4. a kind of ultrasonic development according to claim 1 enhances double-cavity ovum taking needle, which is characterized in that each ultrasound is aobvious It is 10mm~60mm that shadow, which enhances band along the length of the needle tubing axial direction, per between two adjacent ultrasonic development enhancing bands Spacing is 20mm~100mm.
5. a kind of ultrasonic development according to claim 4 enhances double-cavity ovum taking needle, which is characterized in that each ultrasound is aobvious Shadow enhances band along the equal length of the needle tubing axial direction, per the spacing phase between two adjacent ultrasonic development enhancing bands Deng.
6. a kind of ultrasonic development according to claim 1 enhances double-cavity ovum taking needle, which is characterized in that the line style groove group The cross section of the needle tubing is divided into 3~4 areas by radial along the needle tubing.
7. a kind of ultrasonic development according to claim 1 or 6 enhances double-cavity ovum taking needle, which is characterized in that the line style is recessed Slot group includes at least three line style groove, and the width of each line style groove is no more than 600um, and depth is no more than 20um.
CN201821551069.3U 2018-09-21 2018-09-21 A kind of ultrasonic development enhancing double-cavity ovum taking needle Active CN209203463U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821551069.3U CN209203463U (en) 2018-09-21 2018-09-21 A kind of ultrasonic development enhancing double-cavity ovum taking needle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821551069.3U CN209203463U (en) 2018-09-21 2018-09-21 A kind of ultrasonic development enhancing double-cavity ovum taking needle

Publications (1)

Publication Number Publication Date
CN209203463U true CN209203463U (en) 2019-08-06

Family

ID=67454625

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201821551069.3U Active CN209203463U (en) 2018-09-21 2018-09-21 A kind of ultrasonic development enhancing double-cavity ovum taking needle

Country Status (1)

Country Link
CN (1) CN209203463U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111529024A (en) * 2020-05-11 2020-08-14 上海交通大学医学院附属瑞金医院 Double-cavity ovum taking needle with information transmission device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111529024A (en) * 2020-05-11 2020-08-14 上海交通大学医学院附属瑞金医院 Double-cavity ovum taking needle with information transmission device

Similar Documents

Publication Publication Date Title
US10238367B2 (en) Devices, systems, and methods for targeted cannulation
CN109259832A (en) A kind of two-chamber oocyte collector
CN209203464U (en) A kind of ultrasonic development enhancing single-lumen ovum pickup needle
WO2020238561A1 (en) Real-time high-resolution puncture guiding system
CN209203458U (en) A kind of ultrasonic development enhancing puncture needle
CN105919655A (en) Puncture needle used under ultrasound guidance
CN209203463U (en) A kind of ultrasonic development enhancing double-cavity ovum taking needle
CN109259834A (en) A kind of disposable oocyte collector
CN210582529U (en) Puncture needle with reticle
KR102123516B1 (en) Ultrasonic diagnostic apparatus capable of self-fixing
CN109259835A (en) A kind of single-chamber oocyte collector
CN211749715U (en) Self-guiding type endoscopic system
CN112315557A (en) Puncture needle with aligned inner and outer needle bevels
CN109259833A (en) A kind of single-chamber variable diameter oocyte collector
CN109009231A (en) A kind of ultrasound vessel catheter
CN210447076U (en) Puncture needle with hand position
CN209574812U (en) Localization by ultrasonic rubble component and localization by ultrasonic stone crusher
CN107343812A (en) Ultrasound guided puncture pin and preparation method
CN111000594A (en) Real-time ultrasonic percutaneous aspiration biopsy injection device
CN110420051A (en) A kind of puncturing drainage apparatus with ultrasonic probe
CN204765930U (en) Simple and easy support of puncture location B ultrasonic probe
CN214104560U (en) Puncture needle
CN211511995U (en) Superconductive visual abortion instrument
CN110742695A (en) Visual minimally invasive diagnosis and treatment trolley
CN205683125U (en) A kind of puncture needle for ultrasound guidance

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant