WO2020103350A1 - 一种医用连接装置 - Google Patents
一种医用连接装置Info
- Publication number
- WO2020103350A1 WO2020103350A1 PCT/CN2019/076046 CN2019076046W WO2020103350A1 WO 2020103350 A1 WO2020103350 A1 WO 2020103350A1 CN 2019076046 W CN2019076046 W CN 2019076046W WO 2020103350 A1 WO2020103350 A1 WO 2020103350A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- connection device
- spiral tube
- pitch
- proximal end
- distal end
- Prior art date
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/0233—Pointed or sharp biopsy instruments
- A61B10/0283—Pointed or sharp biopsy instruments with vacuum aspiration, e.g. caused by retractable plunger or by connected syringe
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- A61B1/00112—Connection or coupling means
- A61B1/00121—Connectors, fasteners and adapters, e.g. on the endoscope handle
- A61B1/00128—Connectors, fasteners and adapters, e.g. on the endoscope handle mechanical, e.g. for tubes or pipes
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- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
- A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
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Definitions
- the invention relates to a medical connection device in the field of medical instruments, in particular to an endoscope attachment device integrating functions of electric conduction, liquid passing, powder spraying, negative pressure suction, sealing, insulation and support.
- Endoscopy technology has been born for more than 50 years, and has gone from the stage of disease diagnosis to disease treatment. It has been very effective and reliable for the treatment of some digestive diseases, and has even become the first choice for treatment.
- endoscopic technology endoscopic tissue biopsy, endoscopic mucosal resection (EMR), and endoscopic mucosal dissection (Endoscopic submucosal dissection (ESD) have been widely used. Treatment of tract bleeding, polypectomy, and early cancer are gradually becoming the first choice. Among them, ESD has played a key role in the detection, diagnosis and resection of early cancer.
- Endoscopic submucosal dissection refers to the use of high-frequency instruments to perform submucosal dissection on lesions larger than 2 cm. Due to the large area of ESD resection of the mucosa, the surgical procedure is complicated and generally takes a long time, and the operation needs to be performed under endoscopic guidance.
- the endoscope first enters the human body to find the diseased tissue, then the high-frequency incision knife enters the human body through the endoscopic forceps, marks the lesion, then exits the device after the marking, and the injection needle is used for submucosal injection.
- the connecting tube for traditional endoscope accessories has a relatively simple performance, can only achieve some functions, and is not versatile.
- the connecting tube for injection needles is generally made of polymer materials, which can realize the function of liquid passing, but can not realize the function of conduction.
- connection tubes for high-frequency incision knives some of which use stainless steel tubes, although the function of conducting fluid is achieved, but the overall structure is consistent, the hardness of the front end is large, and it is difficult to bend through the endoscope; if the connection tube for hemostatic forceps is generally used Solid stainless steel wire or stainless steel wire rope can only realize the conductive function, but can not realize the liquid-passing function; as the existing coated spring tube is generally made of spring wire, the whole product is consistent, and cannot coexist with flexibility and rigidity.
- the end close to the operator is defined as the proximal end, and the end remote from the operator is defined as the distal end.
- a medical connection device having a proximal end and a distal end, including an insulating layer and a spiral tube, the insulating layer covering the outermost layer of the entire device; the spiral tube is a conductive hollow tubular structure, located inside the entire device Layer, the helical tube has a helical structure, the helical structure having a gradual pitch from proximal to distal direction. The pitch can be gradually reduced from the proximal end to the distal end. The relatively small pitch of the distal end makes it flexible and easy to pass through the bend of the medical device.
- the relatively large pitch of the proximal end has support and is convenient for pushing to the distal end Medical devices; the pitch can also gradually increase from the proximal end to the distal end, the distal end has a relatively large pitch, and the proximal end has a relatively small pitch; the pitch can also increase from the proximal end to the distal end first and then change Small, or from the proximal end to the distal direction to become smaller and then larger, or adopt the structure of equal pitch.
- the gap between the spiral structures is ⁇ 0.003mm, and the pitch of each thread is ⁇ 0.03mm.
- the spiral tube is a material having electrical conductivity.
- the spiral tube has a spiral structure from the proximal end to the distal end. It is also possible that the proximal end and the distal end of the helical tube may have partial non-helical structure regions separately or simultaneously.
- the pitch of the spiral tube can adopt an equal pitch structure, a gradual pitch structure, a combination of multiple equal pitch structures, and a structure combining equal pitch and gradual pitch.
- the medical connection device of the present invention further includes one or more seals that are connected to the distal or proximal end of the spiral tube or to the proximal and distal ends of the spiral tube at the same time.
- the seal has a non-planar structure, which can be concave-convex, concave, convex.
- the protrusions of the non-planar structure can be semicircular, rectangular, trapezoidal, or toothed.
- the insulating layer of the present invention is made of polymer material, and its thickness is ⁇ 0.03mm.
- the polymer material is polytetrafluoroethylene, fluoroethylene propylene copolymer, and polyethylene.
- the insulating layer covers the outer surface of the spiral tube by means of heat shrinking, welding, and pasting.
- the medical connecting device of the present invention includes: an insulating layer, located on the outer layer of the device, which realizes the function of insulation protection and at the same time plays a sealing effect; the spiral tube plays a conductive function, and at the same time provides a cavity, which can realize functions such as liquid injection.
- the spiral tube contains a spiral structure, the direction of the spiral structure is not fixed, and different pitches can be designed according to different needs, and can be used for liquid injection, powder spraying, negative pressure suction sampling, etc.
- the small-pitch end of the medical connection device has flexibility and is easy to pass through the endoscope forceps, and the large-pitch end is relatively rigid and has support performance.
- the distal and proximal ends have partial non-helical structure areas.
- the seal When the non-helical structure area is relatively short, the length of the rigid section of the product can be shortened.
- the seal has a non-planar structure, which can be concave and convex, concave, convex and other structures. It can be connected to the spiral tube to achieve the sealing function.
- the seal When the non-helical structure area of one end of the spiral pipe is long, the seal can be connected only at the other end of the spiral pipe.
- the seal When the length of the non-helical structure area at both ends is the same or the gap is not large, the seal can be connected to both ends of the spiral pipe .
- the insulating layer covers the outside of the seal, and the pressure gradually decreases through the non-planar structure of the seal, improving the sealing effect.
- the insulating layer is located in the outermost layer of the entire device; the spiral tube is a hollow tubular structure made of a conductive material and is located in the inner layer of the entire device.
- the spiral tube contains a spiral structure.
- the insulating layer is made of high molecular material, covering the surface of the spiral tube and the seal.
- the material is not limited to polytetrafluoroethylene (PTFE), fluoroethylene propylene copolymer (FEP), polyethylene (PE), etc.
- the thickness is not less than 0.03mm .
- the insulation layer is attached to the surface of the spiral tube by heat shrinking, welding, pasting, etc.
- the insulating layer makes the product have good voltage resistance, its insulation withstand voltage is not less than 300Vp, and also has good sealing performance, can withstand a pressure of not less than 2atm.
- the spiral tube adopts conductive materials, which can realize the conductive function, and at the same time provide the cavity to realize liquid injection and powder spraying.
- One end of the hollow structure is connected to the energizable parts of the instrument, such as electrodes, forceps, needle-like structures, etc., to realize the functions of product cutting and blood coagulation.
- the outer diameter of the spiral tube is not less than 0.3mm, and the wall thickness is not less than 0.05mm. Because the wall thickness of the spiral tube is small, it can provide a large lumen space. Because the spiral tube has a relatively small outer diameter, the outer diameter of the entire instrument can be reduced to facilitate operation, and at the same time, the product can be adapted to a smaller endoscope cavity.
- the spiral tube has a relatively small resistance value compared to a conventionally wound spring tube, and the resistance value is not greater than 20 ⁇ , which increases the current flowing through the device under the same voltage and can provide working efficiency.
- the outer layer of the spiral tube is covered with an insulating layer, which can effectively protect and prevent the user from being injured by electric shock.
- the spiral tube adopts a hollow tubular structure to provide a channel, which can realize the functions of liquid passing, powder spraying or negative pressure suction. In the clinic, it can achieve the product of saline, indigo rouge injection, powder product spraying or negative pressure suction sampling, etc.
- the spiral tube has a spiral structure.
- the pitch of the distal end of the spiral tube is small and elastic, and the better the bending performance, the better the product can pass through the endoscope bend.
- the pitch of the proximal end of the spiral tube is large, and the supporting performance is good.
- the pitch of the thread can be adjusted to meet the needs of different products.
- the pitch of each thread of the spiral tube can adopt an equal pitch structure, a gradual pitch structure (the pitch can be an unequal number series), a combination of multiple equal pitch structures, a combination of equal pitch and gradual pitch, etc. According to needs, design other different spiral structures.
- a structure combining equal pitch and gradual pitch can be selected.
- FIG. 1A is a schematic diagram of the distal end and the proximal end of the spiral tube of the device of the present invention respectively connected to a seal.
- FIG. 1B is a schematic diagram of the distal end of the spiral tube of the device of the present invention connected to a seal.
- FIG. 2 is a schematic diagram of the device of the present invention applied to a high-frequency cutting knife.
- Fig. 3 is a schematic diagram of applying the device of the present invention to an ultrasound suction biopsy needle.
- Fig. 4 is a schematic diagram of the device of the present invention applied to a hemostat.
- Fig. 5 is a schematic view of the structure of the seal of the device of the present invention.
- the device of the present invention can be used in the following embodiments but not limited to the following embodiments, and can also be used in other endoscope consumables, such as combined instruments of incision knife and hemostatic forceps, bipolar probes, combined instruments of probe and injection needle, etc.
- the medical connection device can adopt different size structures, and the medical connection device of multiple sizes can also be combined and matched in the same product.
- the medical connection device of the present invention includes a spiral tube 2, a sealing member 1, and an insulating layer 3 covering the outer surfaces of the spiral tube 2 and the sealing member 1.
- the spiral tube 2 includes a spiral structure, and different pitches can be designed according to different requirements.
- the helical tube 2 includes a distal non-helical structure region 4, a proximal non-helical structure region 6 and an intermediate spiral structure region 5, including a spiral structure 8 near the proximal end is designed to have an equal pitch structure, near the distal spiral structure region 7 has a gradual pitch that gradually decreases from the proximal end to the distal end.
- the intermediate spiral structure region 5 can also be designed as a gradual pitch that gradually decreases from the proximal end to the distal direction, and can also adopt a combination of a variety of equal pitch structures from the proximal end to the distal end pitch from large to small and then to large. , The structure design of the combination of equal pitch and gradual pitch, and other different spiral structures (not shown in the figure) can also be designed according to requirements.
- the distal non-helical structure area has a shorter length and shortens the length of the rigid section of the product.
- the distal pitch is small and flexible. It is easy to pass through medical devices such as endoscope bends.
- the proximal end has a large pitch and good support.
- the non-helical structure area at the end has a long length and is convenient for pushing.
- the middle end and the proximal end are relatively rigid and have support performance; the spiral tube 2 can play a conductive function, and at the same time provide a cavity to realize liquid injection and other functions.
- seals 1 may be added at both ends of the spiral tube 2.
- FIG. 1B when the proximal non-helical structure region 6 of the spiral tube 2 is longer, the spiral tube 2 is connected to the seal 1 only at the distal end.
- FIG. 5 is a schematic diagram of the structure of the seal.
- the seal is a non-planar structure, which is of a concave-convex, concave, convex and other structures.
- the protrusion of the non-planar structure can be semicircular, rectangular, trapezoidal, or toothed.
- the sealing member 1 can be connected with the spiral tube 2 to realize the sealing function.
- the high-frequency incision knife includes an electrode portion 110, a conveying portion 120, and an operating portion 130.
- the electrode 111 includes a hollow tubular portion and a protrusion.
- the shape of the electrode is not limited to this structure, but can also be other structures including a hollow tubular portion.
- the hollow tubular portion of the electrode can pass liquid, powder, cut, etc .; the limiter 121 At the same time, it plays the role of insulation.
- the limiter 121 adopts a tubular structure, made of heat-resistant and insulating materials such as zirconia, and is fixedly connected to the distal end of the outer tube 125 to limit the extension of the distal end of the electrode 111 And retracted, and the inner hole size is larger than the outer diameter of the hollow tubular portion of the electrode;
- the sealing member 122 is made of a conductive material, the concave-convex structure is conducive to sealing, and is fixedly connected to the proximal end of the electrode 111, and cooperates with the limiter 121 to limit the electrode 111
- the extended length of the insulating layer 123 is made of PTFE and other insulating materials, covering the surface of the sealing member 122 and the spiral tube 124 for sealing and insulating purposes;
- the spiral tube 124 is made of a conductive material, which is relatively common to a wound spring In terms of tube, the resistance is small, the current through the circuit is large when the current path is formed, and the cutting efficiency of the
- the helical tube 123 provides a lumen at the same time. With the same outer diameter, due to the small wall thickness, it can provide a relatively large lumen space for liquid injection or powder spraying; the outer tube 125 extends from the proximal end to the distal end to support Internal connection device, convenient for pushing electrodes, the distal end is connected to the limiter 121, and the proximal end is fixedly connected to the positioning structure 131; the positioning structure 131 includes a luer connector 1311, which is an input port for liquid or powder products; The slider 133 can move back and forth along the core rod 132; the slider 133 is connected to the proximal end of the spiral tube 124, and the spiral electrode 124 is controlled to extend or retract the active electrode 111.
- the slider 133 also has a conductive connector 1331 and a luer
- the luer connector 1332 and the conductive connector 1331 are connected to an external high-frequency generator.
- the luer connector 1332 is an input port for liquid or powder products.
- the spiral tube 124 adopts a structure combining a gradual pitch and an equal pitch, and is designed to gradually decrease the pitch from the proximal end to the distal end.
- the pitch near the distal electrode is small, the flexibility is good, and it is convenient for high frequency
- the incision knife passes through the endoscope bend, and the screw pitch near the proximal operation part 130 is relatively large to maintain better rigidity and supportability, and it is convenient for medical personnel to insert the product into the endoscope cavity.
- the spiral tube can also be provided with an equal pitch structure, a gradual pitch structure or a combination of multiple equal pitch structures according to requirements.
- the slider 133 In use, pull the slider 133, retract the electrode 111 to the end face of the limiter 121, and then insert the high-frequency incision knife into the endoscope forceps. Because the high-frequency incision knife spiral tube 124 has a small pitch at the distal end, the high frequency The incision knife can smoothly pass through the bending structure of the distal end of the endoscope.
- the spiral pitch of the proximal end of the spiral tube 124 is relatively large and relatively rigid, and the medical staff can push the high-frequency incision knife to the distal end of the endoscope.
- the seal 122 and the spiral tube 124 have a conductive function, the high-frequency current can be transmitted to the electrode part 110 To mark.
- the slider 133 is pushed, and with the help of the pushing performance of the non-helical structure area at the proximal end of the spiral tube 124, the electrode 111 is extended to perform cutting and peeling.
- you need to inject liquid to bulge the mucosal tissue you can connect a syringe to the Luer connector 1332 to inject to bulge the tissue, and form a liquid buffer layer under the mucosa, that is, the "water pad", which is in the muscle layer.
- FIG. 3 is a schematic diagram of the application of the device of the present invention to an ultrasound suction biopsy needle.
- the ultrasound suction biopsy needle includes a puncture part 210, a delivery part 220, and an operation part 230.
- 211 is a puncture needle, which adopts a hollow tubular structure and contains a needle tip for puncture sampling;
- 221 is a seal, a non-planar structure is conducive to sealing, and is fixedly connected to the puncture needle 211;
- an insulating layer 222 covers the seal 221 and the spiral
- the surface of the tube 223 plays a sealing role;
- the outer tube 224 extends from the proximal end to the distal end and supports the internal connection device to facilitate pushing the puncture needle 211;
- the core rod 231 is connected to the proximal end of the outer tube 224, and the slider 232 can be along the core
- the rod 231 moves, and the slider 232 includes a Luer connector 2321.
- the spiral tube 223 adopts a structure combining a gradual pitch and an equal pitch.
- the pitch near the distal puncture needle 211 is small and the flexibility is good to facilitate the entire biopsy needle to pass through the endoscope bend.
- the spiral tube 223 is operated near the proximal end
- the screw pitch on one side of the portion 230 is large, and the support is good, so that the medical staff can insert the ultrasound biopsy needle into the endoscope cavity.
- the threaded tube close to the side of the slider retains part of the non-helical structure area to facilitate puncture.
- the spiral tube can also be provided with an equal pitch structure, a gradual pitch structure or a combination of multiple equal pitch structures according to requirements.
- the biopsy needle When in use, first insert the biopsy needle into the endoscopic forceps. Ultrasound attracts the biopsy needle's distal spiral tube with a small pitch, which can facilitate the product to pass through the endoscope's distal bending structure. The medical staff pushes the product to the distal end of the endoscope. When ultrasound draws the biopsy needle into the field of view of the endoscope, the length of the puncture needle 211 extending out of the outer tube 224 can be controlled by adjusting the slider 232. During the puncture, a negative pressure device is connected to the luer connector by using the channel of the spiral tube 223 to draw tissue into the puncture needle for sampling.
- the hemostatic forceps includes a gripping part 310, a conveying part 320, and an operating part 330.
- 311 is a forceps head, the shape of which is not limited to this structure, but can also be in the shape of scissors, zigzag, used for electrocoagulation to stop bleeding or cutting, and can be movably connected to the fixing base 312; the fixing base 312 uses a conductive material It is made to support the pliers head 311 and can smoothly open and close the pliers head 311.
- the seal 321 is made of a conductive material, and the non-planar structure is conducive to sealing ,
- the proximal end of the sealing member 321 is connected to the fixing seat 312;
- 322 is an insulating layer, which is made of PTFE and other insulating materials, covering the surface of the sealing member 321 and the spiral tube 323 for sealing and insulation;
- the spiral tube 323 is electrically conductive Compared with ordinary coiled spring tubes, due to the low resistance of the conductive material, when forming a current path, the current through the circuit is large, which can have high efficiency.
- a relatively small outer diameter can be achieved, so that the hemostatic forceps can fit a smaller endoscope cavity;
- 324 is the cable ,
- the distal end is connected to the pull rod 313, which can be a steel wire rope or a steel wire, which is used to drive the opening or closing of the jaw 311;
- 331 is a positioning structure, and a conductive connector 3311 is connected to the proximal end, which is used to connect with a high-frequency power supply.
- the high-frequency current flows to the end of the forceps through the spiral tube 323, and the forceps 311 is closed for electrocoagulation to stop bleeding; 332 is a core rod, and the slider 333 can move along the core rod 332, and the slider 333 can be pushed and pulled along the core rod. Open and close the pliers head 311.
- the spiral tube 323 adopts a structure combining a gradual pitch and an equal pitch. The pitch near the distal end is small and the flexibility is good to facilitate the entire hemostatic forceps to pass through the endoscope bend.
- the thread pitch of the threaded pipe 323 near the proximal end Larger and better supporting, it is convenient for medical staff to insert the hemostatic forceps into the endoscope cavity.
- the threaded tube close to the side of the slider end retains part of the non-helical structure area for easy pushing.
- the spiral tube can also be provided with an equal pitch structure, a gradual pitch structure or a combination of multiple equal pitch structures according to requirements.
- the proximal spiral tube has a large pitch and is relatively rigid, which facilitates medical personnel to push the product to the distal end of the endoscope.
- the forceps 311 is closed to perform electrocoagulation and hemostasis, and the outer insulating layer 322 can play an insulating and protective role.
- the hollow cavity of the spiral tube 323 and the cable 324 can be used to inject fluid through the luer connector 3312 to the syringe to irrigate the blood at the bleeding site.
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Abstract
Description
Claims (13)
- 一种医用连接装置,其具有近端和远端,其特征在于,所述医用连接装置包括绝缘层和螺旋管,所述绝缘层覆于整个装置的最外层;所述螺旋管为可导电空心管状结构,所述螺旋管具有螺旋结构,所述螺旋结构具有从近端到远端方向渐变的螺距。
- 根据权利要求1所述的医用连接装置,其特征在于,所述螺距从近端到远端方向逐渐变小,远端相对较小的螺距使其具有柔性,易于通过医疗装置的弯道,近端相对较大的螺距,具有支撑性,方便向远端推送医疗器械。
- 根据权利要求1所述的医用连接装置,其特征在于,所述螺距从近端到远端方向由大逐渐变小再逐渐变大。
- 根据权利要求1所述的医用连接装置,其特征在于,所述螺距从近端到远端方向逐渐变大。
- 根据权利要求1所述的医用连接装置,其特征在于,所述螺旋管为具有导电性的材料。
- 根据权利要求1所述的医用连接装置,其特征在于,所述螺旋管从近端到远端整根具有螺旋结构。
- 根据权利要求1所述的医用连接装置,其特征在于,所述螺旋管的近端和远端可分别或同时具有部分非螺旋结构区域。
- 根据权利要求1所述的医用连接装置,其特征在于,所述连接装置还包括一个或多个密封件,所述密封件与所述螺旋管的远端或近端或与螺旋管的近端和远端同时相连。
- 根据权利要求8所述的医用连接装置,其特征在于,所述密封件为非平面结构。
- 根据权利要求9所述的医用连接装置,其特征在于,所述非平面结构为凹凸型,内凹型,凸起型,所述非平面结构的突出部分可以为半圆形,矩形,梯形,齿形。
- 根据权利要求1所述的医用连接装置,其特征在于,所述绝缘层采用高分子材料制成。
- 根据权利要求11所述的医用连接装置,其特征在于,所述高分子材料为聚四氟乙烯、氟乙烯丙烯共聚物、聚乙烯。
- 根据权利要求1所述的医用连接装置,其特征在于,所述绝缘层以热缩、焊接、粘贴等方式覆在螺旋管的外表面。
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KR2020217000029U KR200497247Y1 (ko) | 2018-11-21 | 2019-02-25 | 의료용 연결 장치 |
JP2021600062U JP3235996U (ja) | 2018-11-21 | 2019-02-25 | 医療用接続装置 |
DE212019000387.7U DE212019000387U1 (de) | 2018-11-21 | 2019-02-25 | Medizinische Verbindungsvorrichtung |
US17/289,017 US20220000344A1 (en) | 2018-11-21 | 2019-02-25 | Medical Connecting Device |
ES202190026A ES2836537B2 (es) | 2018-11-21 | 2019-02-25 | Dispositivo medico conector |
AU2019383529A AU2019383529A1 (en) | 2018-11-21 | 2019-02-25 | Medical connecting device |
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CN201811390053.3 | 2018-11-21 | ||
CN201811390053.3A CN111202485A (zh) | 2018-11-21 | 2018-11-21 | 一种医用连接装置 |
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WO2020103350A1 true WO2020103350A1 (zh) | 2020-05-28 |
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PCT/CN2019/076046 WO2020103350A1 (zh) | 2018-11-21 | 2019-02-25 | 一种医用连接装置 |
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US (1) | US20220000344A1 (zh) |
JP (1) | JP3235996U (zh) |
KR (1) | KR200497247Y1 (zh) |
CN (1) | CN111202485A (zh) |
AU (2) | AU2019101801A4 (zh) |
DE (1) | DE212019000387U1 (zh) |
ES (1) | ES2836537B2 (zh) |
WO (1) | WO2020103350A1 (zh) |
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CN113679431A (zh) * | 2021-08-30 | 2021-11-23 | 江苏唯德康医疗科技有限公司 | 一种可旋转且带注水管的热活检钳 |
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JP2023067805A (ja) | 2021-10-29 | 2023-05-16 | オリンパスメディカルシステムズ株式会社 | 内視鏡用処置具 |
JP2023067784A (ja) | 2021-10-29 | 2023-05-16 | オリンパスメディカルシステムズ株式会社 | 内視鏡用処置具 |
JP2023067806A (ja) | 2021-10-29 | 2023-05-16 | オリンパスメディカルシステムズ株式会社 | 内視鏡用処置具 |
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- 2019-02-25 JP JP2021600062U patent/JP3235996U/ja active Active
- 2019-02-25 AU AU2019101801A patent/AU2019101801A4/en active Active
- 2019-02-25 AU AU2019383529A patent/AU2019383529A1/en active Pending
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JP3235996U (ja) | 2022-01-21 |
KR20210001500U (ko) | 2021-07-01 |
ES2836537A2 (es) | 2021-06-25 |
AU2019383529A1 (en) | 2021-06-03 |
ES2836537R1 (es) | 2022-11-02 |
CN111202485A (zh) | 2020-05-29 |
DE212019000387U1 (de) | 2021-05-26 |
KR200497247Y1 (ko) | 2023-09-12 |
AU2019101801A4 (en) | 2021-06-24 |
ES2836537B2 (es) | 2023-05-12 |
US20220000344A1 (en) | 2022-01-06 |
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