Liquid administration device
US-2015374922-A1 · Dec 31, 2015 · US
Plunger covers and plungers for use in syringes
US2023166042A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2023166042-A1 |
| Application number | US-202218052050-A |
| Country | US |
| Kind code | A1 |
| Filing date | Nov 2, 2022 |
| Priority date | Mar 15, 2006 |
| Publication date | Jun 1, 2023 |
| Grant date | — |
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- Title
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- Abstract
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- Assignees and inventors
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- First independent claim
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Abstract
Official abstract text for this publication.
A plunger cover for use with a syringe includes a sealing portion adapted to form a seal with the syringe and a central portion adapted to contact fluid within the syringe. The central portion can, for example, be more rigid than the sealing portion. The sealing portion and the central portion are connected in an overmolding process. The sealing portion can, for example, be formed from a thermoplastic elastomer or a thermoplastic polyurethane. The central portion can, for example, be formed from polypropylene, acrylonitrile butadiene styrene, polycarbonate or copolymers thereof.
First claim
Opening claim text (preview).
What is claimed is: 1 . A plunger for use with a syringe comprising: a plunger cover comprising a sealing portion adapted to form a seal with the syringe and a central portion adapted to contact a fluid within the syringe, the central portion being more rigid than the sealing portion, the sealing portion and the central portion being connected in an overmolding process; and the sealing portion is formed or molded from an elastomeric material; the sealing portion includes a seating; and wherein the seating is configured to connect to a drive member on an injector to which the syringe is attached. 2 . The plunger of claim 1 wherein the seating comprises a threaded seating. 3 . The plunger of claim 1 wherein the elastomeric material is one of thermoplastic elastomer and thermoplastic polyurethane. 4 . The plunger of claim 1 , wherein a material for the sealing portion is a first material and a material for the central portion is a second material, the first material and the second material are different and are selected so that molecular bonding occurs between the sealing portion and the central portion.
Assignees
Inventors
Classifications
- A61M5/31513Primary
Piston constructions to improve sealing or sliding · CPC title
Connection of piston with piston rod · CPC title
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Frequently asked questions
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- What does patent US2023166042A1 cover?
- A plunger cover for use with a syringe includes a sealing portion adapted to form a seal with the syringe and a central portion adapted to contact fluid within the syringe. The central portion can, for example, be more rigid than the sealing portion. The sealing portion and the central portion are connected in an overmolding process. The sealing portion can, for example, be formed from a thermo…
- Who is the assignee on this patent?
- Bayer Healthcare Llc
- What technology area does this patent fall under?
- Primary CPC classification A61M5/31513. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Thu Jun 01 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).