EP4221805A1 - Method for producing a mould element for producing micro-arrays, and mould element - Google Patents
Method for producing a mould element for producing micro-arrays, and mould elementInfo
- Publication number
- EP4221805A1 EP4221805A1 EP21772998.7A EP21772998A EP4221805A1 EP 4221805 A1 EP4221805 A1 EP 4221805A1 EP 21772998 A EP21772998 A EP 21772998A EP 4221805 A1 EP4221805 A1 EP 4221805A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- depressions
- base element
- shaped element
- shaped
- underside
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 238000002493 microarray Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 24
- 238000004049 embossing Methods 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 230000000295 complement effect Effects 0.000 claims description 2
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 claims description 2
- 230000005855 radiation Effects 0.000 abstract 1
- 238000007373 indentation Methods 0.000 description 18
- 239000000463 material Substances 0.000 description 7
- 229920001296 polysiloxane Polymers 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 239000013543 active substance Substances 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 239000004480 active ingredient Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 230000037368 penetrate the skin Effects 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M37/00—Other apparatus for introducing media into the body; Percutany, i.e. introducing medicines into the body by diffusion through the skin
- A61M37/0015—Other apparatus for introducing media into the body; Percutany, i.e. introducing medicines into the body by diffusion through the skin by using microneedles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
- B29C59/04—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using rollers or endless belts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
- B29C59/022—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing characterised by the disposition or the configuration, e.g. dimensions, of the embossments or the shaping tools therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M37/00—Other apparatus for introducing media into the body; Percutany, i.e. introducing medicines into the body by diffusion through the skin
- A61M37/0015—Other apparatus for introducing media into the body; Percutany, i.e. introducing medicines into the body by diffusion through the skin by using microneedles
- A61M2037/0053—Methods for producing microneedles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
- B29C59/022—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing characterised by the disposition or the configuration, e.g. dimensions, of the embossments or the shaping tools therefor
- B29C2059/023—Microembossing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2791/00—Shaping characteristics in general
- B29C2791/004—Shaping under special conditions
- B29C2791/009—Using laser
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2793/00—Shaping techniques involving a cutting or machining operation
- B29C2793/0045—Perforating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/753—Medical equipment; Accessories therefor
- B29L2031/7544—Injection needles, syringes
Definitions
- the invention relates to a method for producing a shaped element for the production of microarrays. Furthermore, the invention relates to a shaped element for the production of microarrays, produced in particular with the method according to the invention.
- Microarrays have a large number of microneedles, which are usually arranged in or connected to a carrier element, such as in a patch, a plaster or the like. Microarrays have a large number of microneedles, the length of which is dimensioned such that when they are pressed into the skin of a patient, they penetrate the skin only far enough so that nerves and vessels are not touched by the needle tips as far as possible.
- the needles contain an active substance, for example a drug.
- the corresponding active substance can be applied to an upper side of the needle or can be arranged in the needles.
- the needles or parts of the needles are made of a material that dissolves in the patient's skin.
- Microarrays are produced, for example, with the aid of silicone molds which have a large number of depressions. To fill the depressions, a liquid containing the active ingredient is usually applied to the top of the silicone matrix. After the liquid has dried, another liquid is applied if necessary. The carrier element is applied to the underside of the material placed in the silicone matrix, the microneedles are removed from the silicone matrix and then packaged.
- the production of the silicone matrices is very complicated and expensive.
- the object of the invention is to create a method for producing a shaped element for the production of microarrays, which is inexpensive and preferably suitable for the production of large quantities. Furthermore, it is the object of the invention to create a corresponding shaped element.
- the object is achieved according to the invention by a method according to claim 1 or a shaped element according to claim 12.
- a flat base element is first provided.
- the base element is a film with a thickness of preferably 0.5-2 mm, particularly preferably 0.5-1.5 mm.
- Indentations are then introduced into the base element, which is in particular designed as a film, starting from an upper side of the base element.
- a speaking material can later be introduced into these depressions to form the microneedles.
- the depressions are opened on an underside of the base element opposite the top. The indentations are thus open both at the top and at the bottom of the base element.
- the indentations are produced by embossing with the aid of an embossing element which has elevations which are complementary to the indentations.
- the indentations can be embossed into the base element from the upper side of the base element.
- the embossing element can be a flat, be designed as an embossing board element, on the top of which the corresponding embossing elevations are provided. It is particularly preferred to use an embossing roller as the embossing element. This has the considerable advantage that it is possible to produce the corresponding indentations in a continuous process. This is particularly advantageous when the base element is designed as a film.
- the depressions are preferably opened by heating the base element. It is preferred here that the indentations on the underside are opened by melting. Alternatively, piercing could also take place, with the quality being significantly higher due to the very small dimensions due to the heating or melting that is preferred according to the invention.
- the depression is opened by laser beams.
- a laser beam would be directed onto the base element for each indentation.
- the laser beam can also be directed onto the underside of the base element, so that the depression is opened from the underside. If necessary, these two method steps can be combined with one another to open the depression.
- a laser source can be deflected via mirrors in order to produce a large number of openings on the base element.
- the invention relates to a shaped element for the production of microarrays. It is particularly preferred that the molded element according to the invention is formed using the manufacturing method described above and the preferred developments of this manufacturing method.
- the shaped element according to the invention has a flat base element.
- the base element is preferably in the form of a film which preferably has a thickness in the range from 0.5 to 2 mm, in particular from 0.5 to 1.5 mm.
- TPU, PC, PETG are particularly well suited as film material.
- Indentations are arranged in the base element and extend from an upper side of the base element in the direction of an underside of the base element.
- the indentations are preferably embossed indentations.
- each of the depressions has an opening.
- the opening is provided on the underside of the base member.
- Each recess thus has two opposite openings.
- the cross section of the indentations preferably tapers, starting from the top side of the base element in the direction of the bottom side.
- the indentations are conical or frustoconical.
- a configuration of the depressions in the shape of a pyramid or truncated pyramid is particularly preferred.
- the pyramid-shaped indentation preferably has a square cross-section.
- the indentations are preferably symmetrical in the longitudinal direction, so that the opening provided on the underside is arranged centrally in relation to a base area of the indentation.
- Each individual indentation preferably has a cross-sectional area of 0.04 mm 2 to 0.16 mm 2 , in particular 0.04 to 0.08 mm 2 , on the upper side.
- the depressions themselves preferably have a depth of 600 ⁇ m to 1500 ⁇ m, in particular from 600 m to 1000 m.
- the base element which is designed in particular as a film, has a thickness that is greater than the depth of the depressions.
- the thickness of the foil is preferably 200 ⁇ m-500 ⁇ m thicker than the depth of the depressions.
- the base element has a thickness of 800 ⁇ m-2 mm.
- the openings on the underside of the base element are preferably lasered openings, ie openings produced by laser beams.
- the base element has, in particular, a material structure modified by laser beams.
- the base element preferably has at least partially melted material in the region of the openings on the underside of the base element.
- the openings on the underside of the base element preferably have a diameter of ⁇ 40 ⁇ m, in particular ⁇ 10 ⁇ m.
- the depressions preferably have a small spacing or a high density.
- 49-625 depressions are provided per square centimeter in a particularly regular arrangement.
- An arrangement of depressions, for example in rows, is also provided, with the adjacent rows being arranged in a staggered manner.
- Figure 1 shows a schematic side view of a base element together with an embossing roller
- FIG. 2 shows a schematic side view of the embossed base element together with a laser device
- FIG. 3 shows a schematic enlarged side view of a depression produced by the method according to the invention.
- a base element 10 in the form of a film is moved from left to right in the direction of arrow 12 in FIG.
- an embossing roller 18 is provided, which rotates counterclockwise in the direction of an arrow 20 in the exemplary embodiment.
- a multiplicity of elevations 22 are provided on an outside of the embossing roller 18 , the elevations 22 being distributed regularly over the entire outside of the embossing roller 20 .
- the cross section of the elevations 22 corresponds to the cross section of the depressions 14.
- the elevations 22 are in particular pyramid-shaped and preferably have a square cross section.
- the height of the elevations 22 and thus the depth of the depressions is somewhat less than the thickness of the film 10.
- the film 10 is thus closed on an underside 24 even after the depressions 14 have been produced by the embossing process.
- openings 26 are produced on the underside 24 of the film 10, with the openings 26 being arranged centrally or centrally in relation to the depressions 14.
- the openings 26 are produced with the aid of a laser device 28, while the embossed film 10 is moved to the right in the direction of an arrow 30, in particular step by step in FIG.
- the laser device 28 generates a multiplicity of laser beams 32 which are each directed onto a tip of the depression 14 .
- the openings 26 are produced by the laser beams 32 .
- a shaped element 34 produced in particular with the aid of the method according to the invention has a multiplicity of indentations 14 . These are designed in such a way that, starting from the upper side 16 of the base element, they taper in the direction of the lower side 24 .
- the depressions 14 each have a pyramid-shaped cross-section with, in particular, a square base.
- a diameter of the openings 26 produced by a laser is preferably ⁇ 40 ⁇ m and preferably ⁇ 10 ⁇ m.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Public Health (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Anesthesiology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Veterinary Medicine (AREA)
- Medical Informatics (AREA)
- Dermatology (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020125484.9A DE102020125484A1 (en) | 2020-09-30 | 2020-09-30 | Process for producing a shaped element for the production of microarrays and shaped element |
PCT/EP2021/074024 WO2022069141A1 (en) | 2020-09-30 | 2021-08-31 | Method for producing a mould element for producing micro-arrays, and mould element |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4221805A1 true EP4221805A1 (en) | 2023-08-09 |
Family
ID=77821713
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21772998.7A Pending EP4221805A1 (en) | 2020-09-30 | 2021-08-31 | Method for producing a mould element for producing micro-arrays, and mould element |
Country Status (8)
Country | Link |
---|---|
US (1) | US20230356455A1 (en) |
EP (1) | EP4221805A1 (en) |
JP (1) | JP2023543571A (en) |
CN (1) | CN116390786A (en) |
BR (1) | BR112023003665A8 (en) |
CA (1) | CA3192989A1 (en) |
DE (1) | DE102020125484A1 (en) |
WO (1) | WO2022069141A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102021100396A1 (en) | 2021-01-12 | 2022-07-14 | Lts Lohmann Therapie-Systeme Ag. | Process and system for the production of microstructures |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1740256A4 (en) | 2003-11-10 | 2011-06-29 | Agency Science Tech & Res | Microneedles and microneedle fabrication |
WO2009032815A1 (en) * | 2007-09-06 | 2009-03-12 | 3M Innovative Properties Company | Tool for making microstructured articles |
US20120126458A1 (en) | 2009-05-26 | 2012-05-24 | King William P | Casting microstructures into stiff and durable materials from a flexible and reusable mold |
JP5558772B2 (en) | 2009-10-08 | 2014-07-23 | 東レエンジニアリング株式会社 | STAMPER FOR MICRO NEEDLE SHEET, PROCESS FOR PRODUCING THE SAME, AND METHOD FOR MANUFACTURING MICRO NEEDLE USING THE SAME |
KR101744148B1 (en) * | 2015-07-23 | 2017-06-20 | 주식회사 엔이케이 | Microneedle manufacturing system for transdermal delivery |
-
2020
- 2020-09-30 DE DE102020125484.9A patent/DE102020125484A1/en active Pending
-
2021
- 2021-08-31 EP EP21772998.7A patent/EP4221805A1/en active Pending
- 2021-08-31 CN CN202180064561.6A patent/CN116390786A/en active Pending
- 2021-08-31 CA CA3192989A patent/CA3192989A1/en active Pending
- 2021-08-31 BR BR112023003665A patent/BR112023003665A8/en unknown
- 2021-08-31 US US18/246,927 patent/US20230356455A1/en active Pending
- 2021-08-31 WO PCT/EP2021/074024 patent/WO2022069141A1/en unknown
- 2021-08-31 JP JP2023519100A patent/JP2023543571A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
BR112023003665A8 (en) | 2024-01-23 |
CA3192989A1 (en) | 2022-04-07 |
CN116390786A (en) | 2023-07-04 |
WO2022069141A1 (en) | 2022-04-07 |
BR112023003665A2 (en) | 2023-04-04 |
DE102020125484A1 (en) | 2022-03-31 |
JP2023543571A (en) | 2023-10-17 |
US20230356455A1 (en) | 2023-11-09 |
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