Negative-pressure therapy apparatus with push-to-release actuator

Patent metadata

Field	Value
Publication number	US-10973963-B2
Application number	US-201715427933-A
Country	US
Kind code	B2
Filing date	Feb 8, 2017
Priority date	Feb 9, 2016
Publication date	Apr 13, 2021
Grant date	Apr 13, 2021

Abstract

Example embodiments may include an apparatus for providing negative-pressure therapy with a push-to-release actuator. The actuator may be a key insertable through a keyway in the apparatus to engage a movable barrier, such as a piston. The actuator may also be used to lock the barrier in a primed position. Pressing on the actuator can release the barrier and activate the apparatus for negative-pressure therapy. In some examples, the actuator may comprise a shaft, a latch, and a spring biasing the latch toward the shaft. The latch may comprise an opening toward a proximal end of the shaft. The apparatus may comprise a receptacle for receiving the actuator, and a keeper may disposed within the receptacle for coupling to the latch. In some embodiments, the keeper may comprise a base protruding from the wall, and a ledge extending from the base toward the second aperture.

First claim

What is claimed is:

1. An apparatus for priming a piston in a housing, the apparatus comprising:
a shaft comprising a proximal end and a distal end, the distal end for insertion through an opening in the housing to engage the piston, the proximal end being coupled to a handle opposite the distal end;
a latch for releasably coupling to a keeper disposed in the housing, the latch comprising a base and a bar extending toward the proximal end of the shaft; and
a spring biasing the latch toward the shaft, wherein the latch is coupled to the shaft by the spring, wherein a first end of the spring is coupled to the shaft opposite the proximal end of the shaft, and wherein the latch is proximate to a second end of the spring that extends free opposite the distal end of the shaft and toward the handle.

2. The apparatus of claim 1 , wherein the spring is a flat spring disposed within an aperture of the shaft.

3. The apparatus of claim 1 , wherein the spring is a cantilever spring.

4. The apparatus of claim 1 , wherein:
the shaft is a beam; and
the spring is a flat spring disposed within a plane of the shaft.

5. The apparatus of claim 1 , wherein:
the shaft is a beam; and
the spring is a cantilever spring.

6. The apparatus of claim 1 , wherein the spring is a flat spring, and further comprising a centralizer configured to bias the flat spring toward the shaft.

7. The apparatus of claim 6 , wherein the centralizer is a cantilevered beam having a free end opposite the proximal end of the shaft.

8. The apparatus of claim 6 , wherein the centralizer comprises a bow.

9. The apparatus of claim 1 , wherein:
the shaft comprises an aperture; and
the spring is a cantilever spring coupled to the shaft and disposed within the aperture such that the spring and the shaft have collinear neutral axes and the spring lies in a plane defined by edges of the shaft.

10. The apparatus of claim 1 , further comprising a lever coupled to the spring.

11. The apparatus of claim 10 , wherein the latch comprises a hook.

12. The apparatus of claim 1 , wherein:
the shaft is a beam having an aperture;
the spring is disposed within the aperture; and
the spring is a cantilever spring.

13. The apparatus of claim 1 , wherein:
the shaft is a beam having an aperture;
the spring is disposed within the aperture;
the spring is a cantilever spring; and
a centralizer is coupled to the spring between the latch and the free end to bias the latch toward the shaft.

Assignees

• Kci Licensing Inc

Inventors

• Conner Ryan
• Musante Crystal

Classifications

• A61M1/86

  Connectors between drainage tube and handpiece, e.g. drainage tubes detachable from handpiece · CPC title

• A61M1/912

  Connectors between dressing and drainage tube · CPC title

• A61M1/815

  the barrel serving as aspiration container, e.g. in a breast pump · CPC title

• A61M1/67 Primary

  Containers incorporating a piston-type member to create suction, e.g. syringes (cupping glasses A61M1/08; with a flexible member creating suction A61M1/68) · CPC title

• A61M1/81

  Piston pumps, e.g. syringes · CPC title