Pump device having a holding device for receiving a syringe

Patent metadata

Field	Value
Publication number	US-11246980-B2
Application number	US-201816629561-A
Country	US
Kind code	B2
Filing date	May 29, 2018
Priority date	Jul 12, 2017
Publication date	Feb 15, 2022
Grant date	Feb 15, 2022

Abstract

A pump device (1) for administering a medical fluid to a patient comprises a holding device (10) for receiving a syringe barrel (20) of a syringe (2), the holding device (10) comprising a stationary section (101) and a holding member (11) movable with respect to the stationary section (101) between an opened position and a closed position, wherein the holding member (11) is configured to secure, in the closed position, the syringe barrel (20) of a syringe (2) received on the holding device (10) with respect to the stationary section (101). A shaft (130) is coupled to the holding member (11), the shaft (130) being constituted to rotate during a movement of the holding member (11). Herein, a damping device (14) comprises a movable part (140) connected to the shaft (130) and rotatable together with the shaft (130) and a stationary part (141) fixed with respect to the stationary section (101) of the holding device (10), a rotational movement of the movable part (140) with respect to the stationary part (141) providing for a damping of the movement of the holding member (11). In this way a pump device for administering a medical fluid to a patient is provided which may provide for a secure fastening of a syringe barrel and at the same time helps to avoid a damaging of in particular smaller syringes by clamping forces of the holding member.

First claim

The invention claimed is:

1. A pump device for administering a medical fluid to a patient, the pump device comprising:
a holding device for receiving a syringe barrel of a syringe, the holding device comprising a stationary section and a holding member movable with respect to the stationary section between an opened position and a closed position, wherein the holding member is configured to secure, in the closed position, the syringe barrel of a syringe received on the holding device with respect to the stationary section,
a shaft coupled to the holding member, the shaft being configured to rotate during a movement of the holding member, and
a damping device comprising a movable part connected to the shaft and rotatable together with the shaft and a stationary part fixed with respect to the stationary section of the holding device, a rotational movement of the movable part with respect to the stationary part providing for a damping of the movement of the holding member.

2. The pump device according to claim 1 , wherein the shaft is fixedly connected to the holding member.

3. The pump device according to claim 1 , wherein the shaft defines an axis of rotation about which the holding member is rotatable together with the shaft.

4. The pump device according to claim 1 , wherein the movable part is fixedly connected to the shaft and rotatable together with the shaft about a common axis of rotation.

5. The pump device according to claim 1 , further comprising a drive device comprising a spring element arranged on the shaft for biasing the holding member towards the closed position.

6. The pump device according to claim 5 , wherein the spring element is a coil spring extending about the shaft.

7. The pump device according to claim 1 , wherein the stationary part of the damping device encloses a chamber in which the movable part is rotatable.

8. The pump device according to claim 7 , wherein the stationary part has a cylindrical barrel shape.

9. The pump device according to claim 7 , wherein the chamber comprises a damping fluid.

10. The pump device according to claim 1 , wherein the stationary part is held, in a positive locking manner, on a fixing section connected to the stationary section of the holding device.

11. The pump device according to claim 10 , wherein the stationary part of the damping device comprises a protrusion element abutting a stop face of the fixing section.

Assignees

• Fresenius Vial Sas

Inventors

• Thomas Fabien
• Wolff Rémy
• Charles Nicolas
• Bertagnolio Denis

Classifications

• A61M5/1456 Primary

  with a replaceable reservoir comprising a piston rod to be moved into the reservoir, e.g. the piston rod is part of the removable reservoir · CPC title

• A61M5/1458

  Means for capture of the plunger flange · CPC title

• A61M5/1454

  spring-actuated, e.g. by a clockwork · CPC title