公开(公告)号：US20240238068A1

公开(公告)日：2024-07-18

申请号：US18372237

申请日：2023-09-25

Applicant: SHOFU INC.

Inventor： Toshio SHIGA ,  Tsukasa SASAKI ,  Ryoji TAKEI ,  Toshiyuki NAKATSUKA ,  Shunsuke MIYATA ,  Hiroyuki KOBAYASHI ,  Akiko MATSUMOTO

IPC: A61C5/62 ,  A61M5/31

CPC classification number: A61C5/62 ,  A61M5/3134

Abstract: To provide a syringe tip that can prevent the syringe tip from unintentionally falling-off during filling and prevent viscous material from leaking out from gaps by securely attaching the syringe tip to a syringe and can provide excellent operability without obstructing a surgical field.
To provide syringe tip to be attached to a tip of a syringe containing viscous material to discharge the viscous material, comprising



a syringe engaging portion that engages with the syringe,
a cylindrical portion having a hollow portion with a virtual center line at its center and held by a user in the case of engaging the syringe tip with the syringe, and
a nozzle portion discharging the viscous material contained in the syringe,
wherein in the case that the maximum length (mm) between both end portions of the cylindrical portion on a virtual straight line orthogonal to the virtual central line is defined as first length A, the virtual straight line orthogonal to the virtual central line and including both end portions of the cylindrical portion constituting the first length A is defined as first virtual straight line, and the length (mm) between both end portions of the cylindrical portion on a second virtual straight line orthogonal to the virtual central line and orthogonal to the first virtual straight line is defined as second length B,
the first length A and the second length B satisfy the following relational expressions (1) to (3).






First length A/Second length B≥1.5  Relational expression (1):



13≥(First length A+Second length B)≥5  Relational expression (2):



5≥Second length B  Relational expression (3):

公开(公告)号：US20210205181A1

公开(公告)日：2021-07-08

申请号：US17032335

申请日：2020-09-25

Applicant: SHOFU INC.

Inventor： Naoya KITADA ,  Rei NISHIMURA ,  Hiroyuki KOBAYASHI ,  Kenzo Yamamoto

IPC: A61K6/30 ,  C08L33/10 ,  C08L81/08 ,  C08K5/5419

Abstract: To provide one liquid type dental adhesive composition that exhibits excellent adhesive property to glass ceramics, oxide-base ceramics and tooth substance, and has excellent storage stability, which are contrary features. One liquid type dental adhesive composition contains (a) silane coupling agent represented by general formula (1), (b) acidic group-containing polymerizable monomer, (c) volatile organic solvent, and (d) water. (In the formula, R1 represents an organic group having at least one functional group selected from the group consisting of a (meth)acryloyl group, a vinyl group and an epoxy group, R2 represents C4-C8 linear alkyl group, R3 represents C1-C8 alkyl group, and n is integer selected from 1 to 3.)

公开(公告)号：US20240252280A1

公开(公告)日：2024-08-01

申请号：US18372250

申请日：2023-09-25

Applicant: SHOFU INC.

Inventor： Toshio SHIGA ,  Tsukasa SASAKI ,  Ryoji TAKEI ,  Toshiyuki NAKATSUKA ,  Shunsuke MIYATA ,  Hiroyuki KOBAYASHI ,  Akiko MATSUMOTO

IPC: A61C5/62

CPC classification number: A61C5/62

Abstract: To provide a compule or syringe tip that can discharge viscous material in an intended shape by reducing deformation of the viscous material during discharge, can prevent viscous material from adhering to unintended portion by reducing an amount of viscous material that adheres to a nozzle tip, and can reduce dripping of viscous material to improve the anti-dripping property of the viscous material.
To provide a compule or syringe tip having a discharge structure for discharging viscous material from a discharge opening, wherein the discharge structure comprises a flow path that is formed around a virtual central line and allows the viscous material to move, and a tapered flow path formed between the flow path and the discharge opening, wherein a cross-sectional area of the tapered flow path gradually increases toward the discharge opening.

公开(公告)号：US20220287919A1

公开(公告)日：2022-09-15

申请号：US17201118

申请日：2021-03-15

Applicant: SHOFU INC.

Inventor： Kenzo YAMAMOTO ,  Hiroyuki KOBAYASHI ,  Daisuke HARA ,  Shunsuke MIYATA

IPC: A61K6/62 ,  C08K5/00 ,  C08K5/14 ,  C08F220/32 ,  C08F220/28 ,  C08F2/50 ,  C08K5/17 ,  C08K5/08 ,  A61K6/61 ,  A61K6/887

Abstract: [Problem]
To provide a photocurable composition having a high curing depth.
[Solution]
To provide a photocurable composition of the present disclosure comprises (A) polymerizable monomer, (B) photosensitizer, (C) photoacid generator, and (D) photopolymerization accelerator, wherein, the photocurable composition comprises (D-1) amine compound represented by formula (1) as the (D) photopolymerization accelerator. (In the formula (1), R1 is a substituent represented by formula (2), and R2 and R3 are substituents represented by formula (2) or substituents selected from —OH group, —O— group, —S— group, —NH—C(O)—NH— group, —C(O)—O— group, —OC(O)— group, —OC(O)—NH— group, —NH—C(O)—O— group, halogen, an organic group which may have an alkoxysilyl group, an aromatic ring which may have a substituent and an alicyclic heterocycle which may have a substituent. Further, R2 and R3 may be H when at least one or more R4s of the formula (2) are an aromatic ring, and R3 may be H when R2 is a substituent represented by the formula (2).)