US5207647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Needle device
Assignee: Individual
•
Filing: 1991-11-05
•
Granted: 1993-05-04
•
Expires: 2011-11-05
Abstract
Abstract A needle device for delivering medicaments to the body of a patient, the device including an elongated housing having a catheter on one end, with a trocar arranged through the end of the housing and the catheter. The trocar is reciprocably advancable and retractable with respect to the catheter. A spring biased carriage in the housing controls the movement of the trocar and causes it to retract from the distal end of the catheter after the catheter and trocar have been advanced into a body and the trocar no longer encounters resistance to forward or distally directed advance of the device.
Inventors
- 👤 David Y. Phelps
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:25
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/34; A61B17/3494; A61B17/3496; A61B17/3401; A61M; A61M25/00; A61M25/01; A61M25/06; A61M25/0606; A61B17/3474; A61B2017/00017; A61B2017/00115; A61M25/0612; A61M25/0631
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
123 words
A needle device for the delivery of medicaments, comprising: an elongated housing; a reciprocable hollow needle having a proximal end and a distal end with a lumen there between, said proximal end secured within said housing; a catheter disposed about said hollow needle, said catheter having a distal end and a proximal end, said proximal end of said catheter being attached to said housing; an arrangement of compressable and releasable springs disposed within said housing and attached to said hollow needle so as to bias said hollow needle therefrom; and a detent assembly to actuate retraction of said hollow needle within said catheter upon a decrease in pressure upon said hollow needle as it is being advanced into a space or potential space.
Claim 2
Dependent Claim
123 words
A needle device for the delivery of medicaments, comprising: an elongated housing; a reciprocable hollow needle having a proximal end and a distal end with a lumen there between, said proximal end secured within said housing; a catheter disposed about said hollow needle, said catheter having a distal end and a proximal end, said proximal end of said catheter being attached to said housing; an arrangement of compressable and releasable springs disposed within said housing and attached to said hollow needle so as to bias said hollow needle therefrom; and a detent assembly to actuate retraction of said hollow needle within said catheter upon a decrease in pressure upon said hollow needle as it is being advanced into a space or potential space.
Claim 3
Dependent Claim
49 words
A needle device for the delivery of medicaments, as recited in claim 1, wherein said arrangement of springs includes a first compressive spring and a carriage shaft for reaction with said first compressive spring, and a second compressive spring, interacting so as to effectuate retraction of said hollow needle.
Claim 4
Dependent Claim
98 words
A needle device for the delivery of medicaments, catheters or medical devices, comprising: an elongated housing having a proximal end and a distal end; a hollow needle movably arranged through the distal end of said housing; a catheter attached to the distal end of said housing, said hollow needle movably arranged through said catheter and adapted to be distally co-terminuous therewith; and means for effectuating retraction of said hollow needle from a distally co-terminuous relationship with said catheter upon the engaging of a void in a body by said distal end of said catheter and said hollow needle.
Claim 5
Dependent Claim
98 words
A needle device for the delivery of medicaments, catheters or medical devices, comprising: an elongated housing having a proximal end and a distal end; a hollow needle movably arranged through the distal end of said housing; a catheter attached to the distal end of said housing, said hollow needle movably arranged through said catheter and adapted to be distally co-terminuous therewith; and means for effectuating retraction of said hollow needle from a distally co-terminuous relationship with said catheter upon the engaging of a void in a body by said distal end of said catheter and said hollow needle.
Claim 6
Dependent Claim
113 words
A needle device for delivery of an medicaments, comprising: an elongated housing having a proximal end and a distal end; a catheter having a lumen and a needle having a lumen, said needle with said lumen co-extensively arranged within the lumen of said catheter on the distal end of said housing; a means for retracting said needle into said housing and with respect to said catheter; and an indicator means on the proximal end of said housing to visually signal the retraction of said needle with said lumen with respect to said catheter and said housing, to indicate the sensing of a void in a body into which said device has been advanced.
Claim 7
Dependent Claim
113 words
A needle device for delivery of an medicaments, comprising: an elongated housing having a proximal end and a distal end; a catheter having a lumen and a needle having a lumen, said needle with said lumen co-extensively arranged within the lumen of said catheter on the distal end of said housing; a means for retracting said needle into said housing and with respect to said catheter; and an indicator means on the proximal end of said housing to visually signal the retraction of said needle with said lumen with respect to said catheter and said housing, to indicate the sensing of a void in a body into which said device has been advanced.
Claim 8
Dependent Claim
38 words
A needle device for delivery of medicaments, as recited in claim 4, wherein said distal tip of said catheter is pre-curved so as to permit its automatic curvature thereof when said needle with said lumen is retracted therefrom.
Claim 9
Dependent Claim
49 words
A needle device for delivery of medicaments, as recited in claim 4, wherein said means for retracting said needle with said lumen into said housing comprises a pair of springs in combination with a detent assembly to pull said needle with said lumen at least partway into said housing.
Claim 10
Dependent Claim
37 words
A needle device for delivery of medicaments, as recited in claim 4, wherein said catheter has a distal end and a proximal end, said distal end being made of softer more flexible construction than said proximal end.
Claim 11
Dependent Claim
27 words
A needle device for delivery of medicaments, as recited in claim 7, wherein said proximal end of said catheter has a braided reinforcement woven into its walls.
Claim 12
Dependent Claim
35 words
A needle device for the delivery of medicaments as recited in claim 4, including a means for testing for the loss of resistance to fluid backpressure within the lumen of said needle with said lumen.
Claim 13
Dependent Claim
25 words
A needle device for the deliver of medicaments, as recited in claim 7, wherein said distal end of said catheter has a pre-curve arranged therein.
Claim 14
Dependent Claim
56 words
A needle device for the delivery of medicaments, as recited in claim 9, wherein said means for testing for loss of resistance comprises a resilient bulb disposed adjacent the distal end of said elongated housing, said resilient bulb defining a chamber which is in fluid communication with the distal end of said needle with said lumen.
Claim 15
Dependent Claim
130 words
A needle device for the delivery of medicaments, comprising: an elongated housing having a proximal end and a distal end; a reciprocable hollow needle having a proximal end and a distal end, said proximal end of said hollow needle securable to a carriage shaft within said housing; a catheter having a proximal end and a distal end, said proximal end attachable to said distal end of said housing and over said reciprocably movable hollow needle; said carriage shaft biasedly arranged within said housing and attached at one end to the proximal end of said housing; a spring adapted to bias said hollow needle distally; and a detent assembly engagable with said carriage shaft to permit said hollow needle and carriage shaft to be biased proximally by a second spring arrangement.
Claim 16
Dependent Claim
130 words
A needle device for the delivery of medicaments, comprising: an elongated housing having a proximal end and a distal end; a reciprocable hollow needle having a proximal end and a distal end, said proximal end of said hollow needle securable to a carriage shaft within said housing; a catheter having a proximal end and a distal end, said proximal end attachable to said distal end of said housing and over said reciprocably movable hollow needle; said carriage shaft biasedly arranged within said housing and attached at one end to the proximal end of said housing; a spring adapted to bias said hollow needle distally; and a detent assembly engagable with said carriage shaft to permit said hollow needle and carriage shaft to be biased proximally by a second spring arrangement.
Claim 17
Dependent Claim
38 words
A needle device for the delivery of medicaments, as recited in claim 12, wherein said carriage shaft has a proximal end which extends out of the proximal end of said housing when said hollow needle is biased proximally.
Claim 18
Dependent Claim
36 words
A needle device for the delivery of medicaments, as recited in claim 13, wherein the distal end of said catheter shaft automatically forms a curve therewithin when said hollow needle is biased proximally within said housing.
Claim 19
Dependent Claim
31 words
A needle device for the delivery of medicaments, as recited in claim 14, wherein the proximal end of said catheter is disengagable from said housing and said proximally biased hollow needle.
Claim 20
Dependent Claim
26 words
A needle device for the delivery of medicaments, as recited in claim 15, wherein the proximal end of said catheter has a brain reinforcement arranged therewithin.
Claim 21
Independent Claim
94 words
A method of delivering medicaments to a body comprising the steps of: advancing into a body space a needle device having an elongated housing with a hollow needle at a distal end thereof, said hollow needle arranged within a catheter, said hollow needle having a proximal end biased distally by a spring arrangement within said housing; puncturing a body space by said hollow needle which extends distally beyond the distal end of said catheter; and retracting said hollow needle proximally upon said hollow needle losing resistance to forward or distal advance in a body.
Claim 22
Independent Claim
94 words
A method of delivering medicaments to a body comprising the steps of: advancing into a body space a needle device having an elongated housing with a hollow needle at a distal end thereof, said hollow needle arranged within a catheter, said hollow needle having a proximal end biased distally by a spring arrangement within said housing; puncturing a body space by said hollow needle which extends distally beyond the distal end of said catheter; and retracting said hollow needle proximally upon said hollow needle losing resistance to forward or distal advance in a body.
Claim 23
Dependent Claim
56 words
A method of delivering medicaments to a body as recited in claim 17, including the steps of: exposing a visual indicator from the proximal end of said housing upon said retraction of said hollow needle proximally with respect to said catheter; and curving the distal end of said catheter upon retraction of the hollow needle therefrom.
Claim 24
Dependent Claim
56 words
A method of delivering medicaments to a body as recited in claim 18, including the step of: testing the entry of said hollow needle into a void in a body organ by applying compressive pressure to a flexible bulb which defines a chamber which is in fluid communication with the distal tip of said hollow needle.
Claim 25
Dependent Claim
41 words
A method of delivering medicaments to a body as recited in claim 19, including the step of: withdrawing said hollow needle and said elongated housing from said catheter so as to permit said catheter to be adapted to a medicament supply.
Claim 26
Dependent Claim
45 words
A method of delivering medicaments to a body as recited in claim 19, including the step of: withdrawing said hollow needle and said elongated housing from said catheter; inserting a further medical instrument into said body through said now empty catheter engaged within the body.
Claim 27
Dependent Claim
60 words
A method of delivering medicaments to a body as recited in claim 19, including the step of: withdrawing said hollow needle only partway from the distal end of said catheter so as to maintain pushability of said catheter in said hollow needle portion thereof to allow the distal pre-curved portion of said catheter to be pushed further into the body.
Claim 28
Dependent Claim
103 words
A reciprocable actuable needle device for the delivery of medicaments to a body, comprising: a longitudinally splitable catheter removable attached to the distal end of an elongated housing, said housing having a proximal end as well as a distal end; a hollow needle assembly arranged within both said housing and said catheter; means for biasing said hollow needle assembly proximally upon loss of resistance against said hollow needle assembly during movement of said needle device in a body; and indicator means to alert a needle device user that said hollow needle has no further resistance to further distally directed movement in a body.
Claim 29
Dependent Claim
103 words
A reciprocable actuable needle device for the delivery of medicaments to a body, comprising: a longitudinally splitable catheter removable attached to the distal end of an elongated housing, said housing having a proximal end as well as a distal end; a hollow needle assembly arranged within both said housing and said catheter; means for biasing said hollow needle assembly proximally upon loss of resistance against said hollow needle assembly during movement of said needle device in a body; and indicator means to alert a needle device user that said hollow needle has no further resistance to further distally directed movement in a body.
Claim 30
Dependent Claim
18 words
A reciprocable actuable needle device as recited in claim 23, wherein said indicator means is a visual indicator.
Claim 31
Dependent Claim
18 words
A recprocable actuable needle device as recited in claim 23, wherein said indicator means is an audible indicator.
Claim 32
Dependent Claim
33 words
A reciprocable actuable needle device as recited in claim 23, including a flexible means on said distal end of said catheter which is bendable in response to retraction of said hollow needle therefrom.
References Cited (Backward Citations)
US3727613A
Cited
US4399023A
Cited
US4654030A
Cited
US4898000A
Cited
US4772264A
Cited
US4865593A
Cited
US4994036A
Cited
US4940458A
Cited
US4969875A
Cited
US5106376A
Cited
US5116353A
Cited
US5116353B1
Cited
US5104382A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-05-03 | 1996-11-02 | 1997-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-03 | 2000-11-02 | 2001-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-03 | 2004-11-02 | 2005-05-04 | $7700.00 | Window Closed / Lapsed |