Abrégé

The present invention relates to a needleless syringe having a main body part and a nozzle part, wherein the main body part provides pulsed pressure to eject a drug as a microjet. A drug-receiving part filled with the drug comprises: a first reduced diameter part having a reduced inner diameter; a first enlarged diameter part having an increased inner diameter; a second reduced diameter part having a reduced inner diameter; and a third passage connected to a nozzle tip portion, wherein a check valve for making the drug flow in one direction is installed between the first enlarged diameter part and the second reduced diameter part to optimize the internal structure of a nozzle, thereby increasing the flow efficiency of the drug and reducing power consumption, and making it possible to optimize the amount of the drug supplied per injection.

Classes IPC  ?

• A61M 5/30 - Seringues pour injection par projection, sans aiguille, p. ex. utilisables avec des ampoules ou des cartouches échangeables
• A61M 5/315 - PistonsTiges de pistonGuidage, blocage, ou limitation des mouvements de la tigeAccessoires disposés sur la tige pour faciliter le dosage
• A61M 5/31 - Seringues Parties constitutives

Abrégé

The present invention relates to a needleless syringe comprising: a main body part; a control part for controlling the main body part; a drug accommodation part connected to one end of the main body part; and a nozzle part through which a drug accommodated in the drug accommodation part is discharged, wherein the main body part provides, in a pulse form, pressure of a predetermined magnitude to the drug accommodated in the drug accommodation part so as to discharge, to the outside through a nozzle hole of the nozzle part, the drug accommodated in the drug accommodation part under the control of the control part, and further includes an electronic control valve which is disposed in a drug flow path communicating with each of the drug accommodation part and the nozzle part, so as to open/close the flow path of the drug. According to the present invention, the needleless syringe for injecting a drug through the application of pulse pressure can more reliably prevent external air from flowing into the nozzle part during drug discharge.

Classes IPC  ?

• A61M 5/30 - Seringues pour injection par projection, sans aiguille, p. ex. utilisables avec des ampoules ou des cartouches échangeables
• A61M 5/315 - PistonsTiges de pistonGuidage, blocage, ou limitation des mouvements de la tigeAccessoires disposés sur la tige pour faciliter le dosage
• A61M 39/24 - Soupapes de retenue ou soupapes anti-retour
• A61M 5/31 - Seringues Parties constitutives

Abrégé

The present invention relates to a needleless syringe comprising a body part and a nozzle part, wherein the body unit provides a pulse-type pressure of a predetermined magnitude to a drug accommodated in a drug accommodation unit in the nozzle unit, and the nozzle unit discharges, in the form of a microjet through a nozzle hole of the nozzle unit, the drug accommodated in the drug accommodation unit in response to the pulse-type pressure provided by the body unit. A nozzle unit-side connection unit in the nozzle unit, which is mounted on a connection unit of the body unit, includes an information unit configured to store, as tag information, information on equipment parameters for the operation of the needleless syringe. The body unit is provided with: a sensor capable of recognizing the information unit provided in the nozzle unit; and a control unit that automatically sets the equipment parameters for controlling the operation of the needleless syringe, on the basis of the tag information recognized by the sensor.

Classes IPC  ?

• A61M 5/30 - Seringues pour injection par projection, sans aiguille, p. ex. utilisables avec des ampoules ou des cartouches échangeables
• A61M 5/315 - PistonsTiges de pistonGuidage, blocage, ou limitation des mouvements de la tigeAccessoires disposés sur la tige pour faciliter le dosage

Abrégé

A needleless syringe according to the present invention including a moving magnetic body and a stationary magnet wherein, when a piston moves forward, a magnetic field is generated in a direction opposite to the magnetic field direction of the stationary magnet to offset the magnetic field of the stationary magnet and thus separating the moving magnetic body and the stationary magnet from each other and, when the piston moves backward, the moving magnetic body is attracted using the magnetic field of the stationary magnet so that the piston for pressurizing and injecting a drug can repeatedly and reciprocally move forward or backward, thereby rapidly and repeatedly injecting a predetermined drug.

Classes IPC  ?

• A61M 5/30 - Seringues pour injection par projection, sans aiguille, p. ex. utilisables avec des ampoules ou des cartouches échangeables

Abrégé

The present invention is configured so that a user can adjust injection attributes including drug injection mode, injection amount, injection depth, and injection speed, and thus has the advantage that convenience of use can be further improved, wherein the user can set desired injection attributes through a user interface, and thus convenience can be improved and a number of outputs, a period, an amplitude, an output time, and an output off time of a pulse applied to a solenoid coil can be adjusted to adjust the injection attributes of a drug to those desired by the user.

Classes IPC  ?

• A61M 5/30 - Seringues pour injection par projection, sans aiguille, p. ex. utilisables avec des ampoules ou des cartouches échangeables
• A61M 5/315 - PistonsTiges de pistonGuidage, blocage, ou limitation des mouvements de la tigeAccessoires disposés sur la tige pour faciliter le dosage

Abrégé

A needleless syringe, according to the present invention can cause a piston for pressurizing and injecting a drug to repeatedly reciprocate forward and backward, and thus can repeatedly inject a predetermined drug at high speed so that multiple injections, rather than a single injection, are possible during a single procedure to a wider range of skin such as that of the face in the fields of skin care and the like, wherein a user can automatically and repeatedly inject a small amount of drug at high speed without separate loading and the needleless syringe includes a recoil offset part for offsetting recoil generated during the advancing and retreating of the piston, and thus can have more improved convenience of use.

Classes IPC  ?

• A61M 5/30 - Seringues pour injection par projection, sans aiguille, p. ex. utilisables avec des ampoules ou des cartouches échangeables

Abrégé

The present invention is configured so that a user can adjust injection attributes including drug injection mode, injection amount, injection depth, and injection speed, and thus has the advantage that convenience of use can be further improved. In addition, the user can set desired injection attributes through a user interface, and thus convenience can be improved. Moreover, the output frequency, period, amplitude, output time, and output off time of a pulse applied to a solenoid coil can be adjusted to adjust the injection attributes of a drug to those desired by the user.

Classes IPC  ?

• A61M 5/30 - Seringues pour injection par projection, sans aiguille, p. ex. utilisables avec des ampoules ou des cartouches échangeables
• A61M 5/315 - PistonsTiges de pistonGuidage, blocage, ou limitation des mouvements de la tigeAccessoires disposés sur la tige pour faciliter le dosage
• A61M 5/31 - Seringues Parties constitutives

Abrégé

In a needleless syringe according to the present invention, a current is supplied to a solenoid coil to generate a magnetic field so as to move a moving magnetic body and a piston forward, and when the current to the solenoid coil is cut off, an elastic member for the moving magnetic body moves the moving magnetic body backward and an elastic member for the piston moves the piston backward, so that the piston to be injected by pressurizing a drug is configured to reciprocate repeatedly forward and backward and thus, a predetermined drug can be repeatedly injected at high speed. In addition, according to the present invention, time for which the current is applied to the solenoid coil, is adjusted to minimize recoil without adding a recoil offset structure so that the structure is simple and convenience of use can be improved.

Classes IPC  ?

• A61M 5/30 - Seringues pour injection par projection, sans aiguille, p. ex. utilisables avec des ampoules ou des cartouches échangeables
• A61M 5/315 - PistonsTiges de pistonGuidage, blocage, ou limitation des mouvements de la tigeAccessoires disposés sur la tige pour faciliter le dosage

Abrégé

A needleless syringe according to the present invention is configured to move a movable magnetic body and a piston forward by a magnetic field generated by current supplied to a solenoid coil and, when current is blocked to the solenoid coil, allow an elastic member for the movable magnetic body to move the movable magnetic body backward and allow an elastic member for a piston to move the piston backward so that the piston for pressurizing and injecting a drug can repeatedly and reciprocally move forward or backward, thereby rapidly and repeatedly injecting a predetermined drug. Moreover, the present invention minimizes, through controlling of a time of applying current to the solenoid coil, recoil without need to add a separate recoil offset structure thereto, and thus can improve convenience in use while having a simple structure.

Classes IPC  ?

• A61M 5/30 - Seringues pour injection par projection, sans aiguille, p. ex. utilisables avec des ampoules ou des cartouches échangeables
• A61M 37/00 - Autres appareils pour introduire des agents dans le corpsPercutanisation, c.-à-d. introduction de médicaments dans le corps par diffusion à travers la peau
• A61M 5/315 - PistonsTiges de pistonGuidage, blocage, ou limitation des mouvements de la tigeAccessoires disposés sur la tige pour faciliter le dosage

Abrégé

A needleless syringe according to the present invention comprises a movable magnetic body and a stationary magnet wherein, when a piston moves forward, a magnetic field is generated in a direction opposite to the magnetic field direction of the stationary magnet to offset the magnetic field of the stationary magnet and thus separate the movable magnetic body and the stationary magnet from each other and, when the piston moves backward, the movable magnetic body is attracted using the magnetic field of the stationary magnet so that the piston for pressurizing and injecting a drug can repeatedly and reciprocally move forward or backward, thereby rapidly and repeatedly injecting a predetermined drug. Moreover, the present invention minimizes, through controlling of a time of applying current to a first coil, recoil without need to add a separate recoil offset structure thereto, and thus can improve convenience in use while having a simple structure.

Classes IPC  ?

• A61M 5/30 - Seringues pour injection par projection, sans aiguille, p. ex. utilisables avec des ampoules ou des cartouches échangeables
• A61M 37/00 - Autres appareils pour introduire des agents dans le corpsPercutanisation, c.-à-d. introduction de médicaments dans le corps par diffusion à travers la peau
• A61M 5/315 - PistonsTiges de pistonGuidage, blocage, ou limitation des mouvements de la tigeAccessoires disposés sur la tige pour faciliter le dosage

Abrégé

The present invention allows a moving magnetic body to collide with a piston so as to move the piston forward, and thus can inject a drug at a higher speed by using less energy. A needleless syringe according to the present invention can cause the piston for pressurizing and injecting a drug to repeatedly reciprocate forward and backward so as to enable a predetermined drug to be repeatedly injected at a high speed, and thus enables, in the fields of skin care and the like, multiple injections, rather than a single injection, during a single procedure into broader areas of the skin such as the face. In addition, a user can automatically and repeatedly inject the predetermined drug at a high speed without the necessity of separate loading. Furthermore, the needleless syringe according to the present invention includes a rebound offset part for offsetting rebound generated when the piston moves forward and backward, and thus has more improved convenience of use.

Classes IPC  ?

• A61M 5/30 - Seringues pour injection par projection, sans aiguille, p. ex. utilisables avec des ampoules ou des cartouches échangeables
• A61M 5/315 - PistonsTiges de pistonGuidage, blocage, ou limitation des mouvements de la tigeAccessoires disposés sur la tige pour faciliter le dosage
• A61M 5/31 - Seringues Parties constitutives

Abrégé

A needleless syringe, according to the present invention can cause a piston for pressurizing and injecting a drug to repeatedly reciprocate forward and backward, and thus can repeatedly inject a predetermined drug at high speed so that multiple injections, rather than a single injection, are possible during a single procedure to a wider range of skin such as that of the face in the fields of skin care and the like. In addition, a user can automatically and repeatedly inject a small amount of drug at high speed without separate loading. Furthermore, the needleless syringe according to the present invention includes a recoil offset part for offsetting recoil generated during the advancing and retreating of the piston, and thus can have more improved convenience of use. Moreover, a piston cover is provided between a cylinder and the piston so as to prevent the drug from staining the end portion of the piston, and thus the user does not have to wipe the end portion of the piston.

Classes IPC  ?

• A61M 5/30 - Seringues pour injection par projection, sans aiguille, p. ex. utilisables avec des ampoules ou des cartouches échangeables
• A61M 5/315 - PistonsTiges de pistonGuidage, blocage, ou limitation des mouvements de la tigeAccessoires disposés sur la tige pour faciliter le dosage
• A61M 5/31 - Seringues Parties constitutives

Abrégé

The present invention relates to a novel type of a needle-free drug delivery system in which strong energy such as a laser beam is focused inside liquid contained in a sealed pressure chamber to cause bubble growth and the volume expansion in the sealed pressure chamber due to the bubble growth so as to elongate an elastic membrane, so that an instantaneous pressure is applied to a drug solution contained in a drug microchamber adjacent to the elastic membrane to allow the drug solution to be injected in the form of a liquid microjet, thereby enabling the drug solution to rapidly and accurately penetrate into the bodily tissues of the patient.

Classes IPC  ?

• A61M 5/30 - Seringues pour injection par projection, sans aiguille, p. ex. utilisables avec des ampoules ou des cartouches échangeables
• A61M 37/00 - Autres appareils pour introduire des agents dans le corpsPercutanisation, c.-à-d. introduction de médicaments dans le corps par diffusion à travers la peau
• A61M 5/20 - Seringues automatiques, p. ex. avec tige de piston actionnée automatiquement, avec injection automatique de l'aiguille, à remplissage automatique
• A61M 5/315 - PistonsTiges de pistonGuidage, blocage, ou limitation des mouvements de la tigeAccessoires disposés sur la tige pour faciliter le dosage