US5188620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pre-slit injection site and associated cannula
Assignee: Baxter International Inc
•
Filing: 1990-06-14
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Granted: 1993-02-23
•
Expires: 2010-06-14
Abstract
Abstract A pre-slit injection site includes a housing with a flow path therethrough. A first end of the housing carries a pre-slit septum. A blunt cannula, usable with the injection site, carries a locking member. When the pre-slit injection site slidably receives the blunt cannula the locking member latches to the injection site forming a mechanically coupled unit.
Inventors
- 👤 Steve C. Jepson
- 👤 Thomas E. Dudar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:49
CPC Classifications
A; A61; A61J; A61J1/00; A61J1/14; A61J1/20; A61J1/2089; A61J1/2096; A61M; A61M39/00; A61M39/02; A61M39/04; A61M39/045; A61M39/10; A61M39/14; A61M5/00; A61M5/14; A61M5/162; A61J1/05; A61J1/10; A61J1/1406; A61J1/1475; A61J1/2003; A61J1/2006; A61J1/201; A61J1/202; A61J1/2037; A61J1/2044; A61J1/2048; A61J1/2055; A61J2200/00; A61J2200/10; A61M2039/1072; A61M2039/1077; A61M2205/00; A61M2205/19; A61M2205/192; A61M2205/195; A61M2205/197; Y; Y10; Y10S; Y10S604/00; Y10S604/905
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
214 words
A two piece coupling system for coupling first and second fluid flow members together comprising: an injection site affixed to the first fluid flow member, said site including a housing with a fluid flow path therein, said housing having a first end with end members, defining a tapered interior surface which terminates in an annular channel having a void and a second end, a sealing member of elastomeric material having a side peripheral surface integrating with said interior surface of said housing, an exterior peripheral surface and a resealable opening, carried by said housing having sufficient radial and axial forces to maintain said opening in a sealed condition and forcing a portion of said exterior surface into a raised surface and said annular channel permitting the deformation of said sealing member into said void upon opening of said resealable opening, a blunt cannula affixed to the second fluid flow member with fluid flow path therethrough for engaging and extending through said opening, thereby placing the two fluid flow members into a hermetically sealed fluid flow communication; and said system further including a locking means for releasably locking said site and said cannula together, said locking means including an engageable portion on the exterior of said site housing and an engaging portion on said cannula.
Claim 2
Dependent Claim
214 words
A two piece coupling system for coupling first and second fluid flow members together comprising: an injection site affixed to the first fluid flow member, said site including a housing with a fluid flow path therein, said housing having a first end with end members, defining a tapered interior surface which terminates in an annular channel having a void and a second end, a sealing member of elastomeric material having a side peripheral surface integrating with said interior surface of said housing, an exterior peripheral surface and a resealable opening, carried by said housing having sufficient radial and axial forces to maintain said opening in a sealed condition and forcing a portion of said exterior surface into a raised surface and said annular channel permitting the deformation of said sealing member into said void upon opening of said resealable opening, a blunt cannula affixed to the second fluid flow member with fluid flow path therethrough for engaging and extending through said opening, thereby placing the two fluid flow members into a hermetically sealed fluid flow communication; and said system further including a locking means for releasably locking said site and said cannula together, said locking means including an engageable portion on the exterior of said site housing and an engaging portion on said cannula.
Claim 3
Dependent Claim
58 words
The coupling system as in claim 1 in which said engageable portion includes an engageable surface that is adjacent an end of said housing and that lies in a plane generally perpendicular to said housing fluid flow path; and in which said engaging portion includes deflectable, hook-like engaging members cantilevered from said cannula for engaging said engageable surface.
Claim 4
Dependent Claim
35 words
The coupling system as in claim 1 in which said engageable portion includes an exterior thread form; and in which said engaging portion includes an interior thread form for threadingly engaging said exterior thread form.
Claim 5
Dependent Claim
14 words
A coupling system as in claim 1 with said blunt cannula carrying protective means.
Claim 6
Dependent Claim
17 words
A coupling system as in claim 4 with said protective means formed as a cylindrical shield member.
Claim 7
Dependent Claim
222 words
A two piece coupling system for coupling first and second fluid flow members together comprising: an injection site releasably locked to the first fluid flow member, said site including a housing with a fluid flow path therein, said housing having a first end with end members, defining a tapered interior surface which terminates in an annular channel having a void and a second end, a locking means carried by said housing for releasably locking said site to said first flow member, a sealing member of elastomeric material having a side peripheral surface integrating with said interior surface of said housing, an exterior peripheral surface and a resealable opening, carried by said housing having sufficient radial and axial forces to maintain said opening in a sealed condition and forcing a portion of said exterior surface into a raised surface and said annular channel permitting the deformation of said sealing member into said void upon opening of said resealable opening, and a cannula releasably locked to the second fluid flow member, said cannula including a generally cylindrical blunt piercing connector member defining a fluid flow path therethrough, said blunt piercing member being inserted through said sealing means to establish a hermetically sealed fluid flow connection with said injection site, and an engaging locking member to hold said cannula and said second flow member together.
Claim 8
Dependent Claim
222 words
A two piece coupling system for coupling first and second fluid flow members together comprising: an injection site releasably locked to the first fluid flow member, said site including a housing with a fluid flow path therein, said housing having a first end with end members, defining a tapered interior surface which terminates in an annular channel having a void and a second end, a locking means carried by said housing for releasably locking said site to said first flow member, a sealing member of elastomeric material having a side peripheral surface integrating with said interior surface of said housing, an exterior peripheral surface and a resealable opening, carried by said housing having sufficient radial and axial forces to maintain said opening in a sealed condition and forcing a portion of said exterior surface into a raised surface and said annular channel permitting the deformation of said sealing member into said void upon opening of said resealable opening, and a cannula releasably locked to the second fluid flow member, said cannula including a generally cylindrical blunt piercing connector member defining a fluid flow path therethrough, said blunt piercing member being inserted through said sealing means to establish a hermetically sealed fluid flow connection with said injection site, and an engaging locking member to hold said cannula and said second flow member together.
Claim 9
Dependent Claim
43 words
The coupling system as in claim 6 in which said blunt piercing connector member has a length about three times that thickness of said sealing member and a maximum outside diameter that is about one-third of the maximum diameter of said sealing means.
Claim 10
Dependent Claim
30 words
The coupling system as in claim 6 in which said locking means carried by said site housing includes a plurality of internal threads that are adjacent to said sealing member.
Claim 11
Dependent Claim
28 words
The coupling system as in claim 6 in which said engaging locking member of said cannula includes an interior flange that is adjacent said blunt piercing connector element.
Claim 12
Dependent Claim
176 words
A two piece coupling system for coupling first and second fluid flow members together comprising: an injection site affixed to the first fluid flow member, said site including a housing with a fluid flow path therein, said housing having a first end with end members, defining a tapered interior surface which terminates in an annular channel having a void and a second end, a sealing member of elastomeric material having a side peripheral surface integrating with said interior surface of said housing, an exterior peripheral surface and a resealable opening, carried by said housing having sufficient radial and axial forces to maintain said opening in a sealed condition and forcing a portion of said exterior surface into a raised surface and said annular channel permitting the deformation of said sealing member into said void upon opening of said resealable opening, a blunt cannula affixed to the second fluid flow member with fluid flow path therethrough for engaging and extending through said opening, thereby placing the two fluid flow members into a hermetically sealed fluid flow communication.
Claim 13
Dependent Claim
176 words
A two piece coupling system for coupling first and second fluid flow members together comprising: an injection site affixed to the first fluid flow member, said site including a housing with a fluid flow path therein, said housing having a first end with end members, defining a tapered interior surface which terminates in an annular channel having a void and a second end, a sealing member of elastomeric material having a side peripheral surface integrating with said interior surface of said housing, an exterior peripheral surface and a resealable opening, carried by said housing having sufficient radial and axial forces to maintain said opening in a sealed condition and forcing a portion of said exterior surface into a raised surface and said annular channel permitting the deformation of said sealing member into said void upon opening of said resealable opening, a blunt cannula affixed to the second fluid flow member with fluid flow path therethrough for engaging and extending through said opening, thereby placing the two fluid flow members into a hermetically sealed fluid flow communication.
Claim 14
Dependent Claim
28 words
The coupling system as in claim 10 in which said housing carries a locking means of a plurality of internal threads that are adjacent to said sealing member.
Claim 15
Dependent Claim
23 words
The coupling system as in claim 10 in which said cannula includes an interior locking flange for engaging said second fluid flow member.
Claim 16
Dependent Claim
16 words
The coupling system as in claim 10 in which said first fluid flow member is tubing.
Claim 17
Dependent Claim
17 words
The coupling system as in claim 10 in which said second fluid flow member is a syringe.
Claim 18
Dependent Claim
16 words
The coupling system as in claim 10 in which said second fluid flow member is tubing.
Claim 19
Dependent Claim
15 words
The coupling system as in claim 10 in which said blunt cannula carrying protective means.
Claim 20
Dependent Claim
41 words
The coupling system as in claim 10 in which said blunt cannula has a length about three times the thickness of said sealing member and a maximum outside diameter that is about one-third of the maximum diameter of said sealing member.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-02-23 | 1996-08-24 | 1997-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-02-23 | 2000-08-24 | 2001-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-02-23 | 2004-08-24 | 2005-02-23 | $7700.00 | Window Closed / Lapsed |