Patents by Inventor Dong-Sam Suh

Dong-Sam Suh has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20230310703
    Abstract: The present invention relates to a method of manufacturing collagen for restoring cartilage tissue usable for a joint in an injection manner, and a usage method thereof. The present invention provides a method of obtaining a high-concentration collagen-solution injection by aseptically filling an injection container with collagen separated from pig skin tissue, and a method of using the high-viscosity collagen loaded into the injection container for the purpose of cartilage restoration. Cartilage tissue regeneration is effectively induced when tissue restoration is implemented with respect to a cartilage-deficient portion using collagen, which is a biocompatible material, in a form that is capable of being injected into an application site with an injection needle without a surgical incision. Accordingly, restoration and regeneration of cartilage are easily and quickly induced in an animal, excluding a human, while relieving the burden related to surgery.
    Type: Application
    Filed: February 24, 2023
    Publication date: October 5, 2023
    Inventors: Joon Ho LEE, Ji Chul YOO, Dong Sam SUH, Cheong Ho CHANG
  • Patent number: 11590256
    Abstract: Disclosed is a medical material manufactured using collagen and a method of manufacturing the same. The method includes (1) preparing collagen using distilled water as a solvent, (2) filling a syringe with the prepared collagen and then spinning the collagen through a syringe needle, (3) immediately immersing the spun collagen in a cross-linking solution, which is a mixture including therein a hyperosmotic agent and a cross-linking agent mixed with each other, (4) removing and then washing the collagen after cross-linking is completed, and (5) removing and then drying the collagen after the washing is completed. When the collagen is spun and processed into the form of a thread and the spun thread is then cross-linked, the cross-linked collagen thread has increased strength compared to before cross-linking, and the shape thereof is retained in an aqueous solution.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: February 28, 2023
    Assignee: CELLONTECH CO., LTD.
    Inventors: Jin Sub Kim, Ji Chul Yoo, Dong Sam Suh, Cheong Ho Chang
  • Patent number: 11292827
    Abstract: Disclosed is a method of producing high-concentration collagen for use as a medical material, including: washing tissue of a mammal; subjecting the washed tissue to crushing and immersion in ethyl alcohol; subjecting the tissue to enzymatic treatment with stirring in purified water containing phosphoric acid and pepsin; adding sodium chloride to the collagen subjected to enzymatic treatment, performing stirring, and aggregating collagen; dissolving the aggregated collagen in purified water to give a collagen solution, which is then filtered using a filter and concentrated by removing the pepsin, low-molecular-weight material, and sodium chloride from the collagen solution using a tangential flow filtration device; subjecting the concentrated collagen to sterile filtration, aggregating the collagen using a pH solution in a neutralization tank, and concentrating the collagen by removing a non-aggregated solution; and concentrating the concentrated collagen using a centrifuge and stirring the concentrated collag
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: April 5, 2022
    Assignee: SEWONCELLONTECH CO., LTD.
    Inventors: Cheong Ho Chang, Hyeong Woo Jeong, Ji Chui Yoo, Se Ken Yeo, Dong Sam Suh
  • Patent number: 10973952
    Abstract: Disclosed are a matrix for restoring soft tissue and a method of producing the same, the method including: forming a sheet-type absorption layer (11) on one side of a double layer using biocompatible neutral collagen; forming a film-type support layer (12) on the remaining surface of the double layer by mixing collagen with a water-soluble polymer and a natural material; and forming a double layer-structured matrix (10) for restoring soft tissue by attaching the absorption layer (11) and the support layer (12) so as to treat damage to soft tissue of a mammal other than a human or restore damaged soft tissue. This invention pertains to the treatment of damage to soft tissue such as tendons, ligaments, and rotator cuffs or the restoration of damaged soft tissue, whereby the quality and reliability of products can be remarkably improved, thus satisfying various needs of consumers, who are the users thereof, and exhibiting a good effect.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: April 13, 2021
    Assignee: SEWONCELLONTECH CO., LTD.
    Inventors: Ki Soo Kim, Ji Chui Yoo, Se Ken Yeo, Sang Bum Choi, Chang Kwon Ko, Dong Sam Suh, Cheong Ho Chang
  • Publication number: 20200316247
    Abstract: Disclosed is a medical material manufactured using collagen and a method of manufacturing the same. The method includes (1) preparing collagen using distilled water as a solvent, (2) filling a syringe with the prepared collagen and then spinning the collagen through a syringe needle, (3) immediately immersing the spun collagen in a cross-linking solution, which is a mixture including therein a hyperosmotic agent and a cross-linking agent mixed with each other, (4) removing and then washing the collagen after cross-linking is completed, and (5) removing and then drying the collagen after the washing is completed. When the collagen is spun and processed into the form of a thread and the spun thread is then cross-linked, the cross-linked collagen thread has increased strength compared to before cross-linking, and the shape thereof is retained in an aqueous solution.
    Type: Application
    Filed: November 10, 2017
    Publication date: October 8, 2020
    Inventors: Jin Sub KIM, Ji Chul YOO, Dong Sam SUH, Cheong Ho CHANG
  • Publication number: 20200197568
    Abstract: The present invention relates to a method of manufacturing collagen for restoring cartilage tissue usable for a joint in an injection manner, and a usage method thereof. The present invention provides a method of obtaining a high-concentration collagen-solution injection by aseptically filling an injection container with collagen separated from pig skin tissue, and a method of using the high-viscosity collagen loaded into the injection container for the purpose of cartilage restoration. Cartilage tissue regeneration is effectively induced when tissue restoration is implemented with respect to a cartilage-deficient portion using collagen, which is a biocompatible material, in a form that is capable of being injected into an application site with an injection needle without a surgical incision. Accordingly, restoration and regeneration of cartilage are easily and quickly induced in an animal, excluding a human, while relieving the burden related to surgery.
    Type: Application
    Filed: July 6, 2017
    Publication date: June 25, 2020
    Inventors: Joon Ho LEE, Ji Chul YOO, Dong Sam SUH, Cheong Ho CHANG
  • Patent number: 9879226
    Abstract: Disclosed is a basic culture medium for mesenchymal stem cells, and a cell therapeutic agent cultured and differentiated using same. The basic culture medium reduces the time taken from collection to mass culturing by increasing the proliferation rate of undifferentiated mesenchymal stem cells derived from an adult tissue such as human marrow and adipose tissue, and also is capable of various differentiations into treating agents for bone-forming cells, for cartilage cells, or for fat cells.
    Type: Grant
    Filed: September 6, 2011
    Date of Patent: January 30, 2018
    Assignee: SEWON CELLONTECH CO., LTD.
    Inventors: Dong-Sam Suh, Jun Keun Lee, Dong Il Chang, Min Jung Choi, Jang Hoon Kim, Ga Ram Kim, Cheong Ho Chang
  • Publication number: 20170334969
    Abstract: Disclosed is a method of producing high-concentration collagen for use as a medical material, including: washing tissue of a mammal; subjecting the washed tissue to crushing and immersion in ethyl alcohol; subjecting the tissue to enzymatic treatment with stirring in purified water containing phosphoric acid and pepsin; adding sodium chloride to the collagen subjected to enzymatic treatment, performing stirring, and aggregating collagen; dissolving the aggregated collagen in purified water to give a collagen solution, which is then filtered using a filter and concentrated by removing the pepsin, low-molecular-weight material, and sodium chloride from the collagen solution using a tangential flow filtration device; subjecting the concentrated collagen to sterile filtration, aggregating the collagen using a pH solution in a neutralization tank, and concentrating the collagen by removing a non-aggregated solution; and concentrating the concentrated collagen using a centrifuge and stirring the concentrated collag
    Type: Application
    Filed: December 11, 2014
    Publication date: November 23, 2017
    Inventors: Cheong Ho CHANG, Hyeong Woo JEONG, Ji Chul YOO, Se Ken YEO, Dong Sam SUH
  • Publication number: 20170304491
    Abstract: Disclosed are a matrix for restoring soft tissue and a method of producing the same, the method including: forming a sheet-type absorption layer (11) on one side of a double layer using biocompatible neutral collagen; forming a film-type support layer (12) on the remaining surface of the double layer by mixing collagen with a water-soluble polymer and a natural material; and forming a double layer-structured matrix (10) for restoring soft tissue by attaching the absorption layer (11) and the support layer (12) so as to treat damage to soft tissue of a mammal other than a human or restore damaged soft tissue. This invention pertains to the treatment of damage to soft tissue such as tendons, ligaments, and rotator cuffs or the restoration of damaged soft tissue, whereby the quality and reliability of products can be remarkably improved, thus satisfying various needs of consumers, who are the users thereof, and exhibiting a good effect.
    Type: Application
    Filed: September 29, 2014
    Publication date: October 26, 2017
    Inventors: Ki Soo KIM, Ji Chul YOO, Se Ken YEO, Sang Bum CHOI, Chang Kwon KO, Dong Sam SUH, Cheong Ho CHANG
  • Publication number: 20160279291
    Abstract: Disclosed are a biomaterial imparted with enhanced rubber properties through natural cross-linking between collagen and hyaluronic acid, a method of preparing the same, and a method of using the same, wherein the rubber-type biomaterial is prepared from collagen and hyaluronic acid at a ratio of 2:1 to 7:1 through natural cross-linking. Specifically, a novel material that exhibits rubber properties can be prepared from collagen and hyaluronic acid at an optimal mixing ratio taking into consideration the molecular structural properties thereof under natural cross-linking conditions, rather than chemical or physical cross-linkage, thereby remarkably improving the quality and reliability of products, ultimately fulfilling various needs of consumers to thus increase marketability.
    Type: Application
    Filed: November 15, 2013
    Publication date: September 29, 2016
    Inventors: Ji Chul YOO, Se Ken YEO, Myoung Sung LEE, Jun Keun LEE, Chang Kwon KO, Dong Sam SUH, Cheong Ho CHANG
  • Publication number: 20150320904
    Abstract: The present invention relates to a tissue sealant in which collagen and fibrin are mixed and to a method for preparing same. To this end, the method of the present invention comprises the steps of: mixing a first material using fibrinogen and aprotinin; mixing a second material using thrombin, calcium chloride, and collagen; and preparing a third material by mixing the first material and the second material. The tissue sealant prepared by the method may supplement weaknesses, i.e. strength and degradability, of the fibrin sealant which is currently available in the commercial marketplace. Further, the tissue sealant of the present invention is cytophilic and activates blood platelets contained in blood so as to induce tissue regeneration. Thus, quality and reliability of products can be significantly improved so as to satisfy various needs of consumers who are users, thereby presenting good image.
    Type: Application
    Filed: January 9, 2013
    Publication date: November 12, 2015
    Inventors: Ji Chul YOO, Se Ken YEO, Jang Hoon KIM, Jun Keun LEE, Dong Sam SUH, Cheong Ho CHANG
  • Publication number: 20150141344
    Abstract: The present invention relates to a composition for repairing cartilage tissue, to a method for producing same, and to the use thereof. The present invention provides a composition for repairing cartilage tissue, which is obtained by mixing collagen and hyaluronic acid using a two-way syringe or a mixer, wherein the collagen has a diluted concentration of 5-60 mg/mL excepting water or a physiological phosphate buffer solution, and the hyaluronic acid has a diluted concentration of 5-20 mg/mL excepting water or a physiological phosphate buffer solution.
    Type: Application
    Filed: June 8, 2012
    Publication date: May 21, 2015
    Applicant: SEWON CELLONTECH CO., LTD.
    Inventors: Se Ken Yeo, Cheong Ho Chang, Ji Chul Yoo, Dong Sam Suh, Jun Keun Lee, Sang Hun Woo
  • Publication number: 20140370600
    Abstract: Disclosed is a basic culture medium for mesenchymal stem cells, and a cell therapeutic agent cultured and differentiated using same. The basic culture medium reduces the time taken from collection to mass culturing by increasing the proliferation rate of undifferentiated mesenchymal stem cells derived from an adult tissue such as human marrow and adipose tissue, and also is capable of various differentiations into treating agents for bone-forming cells, for cartilage cells, or for fat cells.
    Type: Application
    Filed: September 6, 2011
    Publication date: December 18, 2014
    Applicant: SEWON CELLONTECH CO., LTD.
    Inventors: Dong-Sam Suh, Jun Keun Lee, Dong Il Chang, Min Jung Choi, Jang Hoon Kim, Ga Ram Kim, Cheong Ho Chang
  • Publication number: 20090325275
    Abstract: Cell manipulation and cultivation equipment for the production of cell therapy products has developed for preventing contamination of cells and improving the utility of a space. The equipment includes a room for the production and testing of cell therapy products, the room having an inner space enclosed in all sides and an outer entrance/exit door provided at any one side thereof, an L-shaped partition installed in a position of the room for the production and testing of cell therapy products, the partition having an inner entrance/exit door provided at any one side thereof, and a clean bench device placed inside the partition, the clean bench device including first, second, and third clean benches for preventing contamination of cells and increasing the utility of a space to the maximum extent. The operating of the clean room and clean bench has advantages to prevent contamination and improving the quality and reliability of cell therapy products.
    Type: Application
    Filed: February 15, 2007
    Publication date: December 31, 2009
    Inventors: Jeong-Yong Choi, Dong-Sam Suh, Chang-Kwon Ko, Seung-Ju Ryu, Hyang-Soon Chang, Jin-Wook Chung, Cheong-Ho Chang
  • Publication number: 20090126285
    Abstract: A facility module is provided for producing and storing a cell therapy product comprising: a Cell Therapy (CT) module one including separately prefabricated units having specific functions and separate entrances and exits so as to minimize contamination, and being capable of producing the cell therapy product, and a Banking of Cell and Tissue (BC) module Two including prefabricated units having specific functions and separate entrances and exits so as to minimize contamination, and being capable of appropriately storing hematopoietic stem cells, bone marrow cells and other cells for a prolonged period. It enables easy and low cost production of the cell therapy product, with sufficient quality to be transplanted into patients, within a short period, and permits clinical application to patients expeditiously.
    Type: Application
    Filed: March 16, 2006
    Publication date: May 21, 2009
    Inventors: Dong-Sam Suh, Chang-Kwon Ko, Seung-Ju Ryu, Sung-Jun Koh, Eun-Young Lee, Soo-Jin Jung, Dong-il Chang, Jun-Keun Lee, Hyun-Gi Yoon, Hyang-Soon Chang, Yong-Hyun Yoo, Jin-Wook Chung, Cheong-Ho Chang
  • Publication number: 20090018868
    Abstract: A method is provided for utilizing a cell therapy product facility and an internet franchise market business comprising: producing a cell therapy product by a CT (Cell Therapy)-module (1) of prefabricated units having specific functions, and; storing of hematopoietic stem cells, bone marrow cells and other cells, by a BC (Banking of Cell and Tissue)-module (2) of prefabricated units having specific functions. Both modules eliminate contamination and maximize efficiency. It provides an operating method and a use method and business method for the above cell therapy product facility. The invention enables easy, low cost production of a product having sufficient quality to be transplanted into patients and put into clinical application within a short period of time. The facility module of the invention can be installed and used wherever adequate space is available. The invention provides improved quality and reliability of cell therapy products.
    Type: Application
    Filed: March 16, 2006
    Publication date: January 15, 2009
    Inventors: Jae-Deog Chang, Cheong-Ho Chang, Dong-Sam Suh, Chang-Kwon Ko, Seung-Ju Ryu, Hee-Chul Ko, Sae-Bom Lee