US3702608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Painless injection device with powered plunger
Assignee: Individual
•
Filing: 1970-12-15
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Granted: 1972-11-14
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Expires: 1990-12-15
Abstract
Abstract An injecting device for a hypodermic syringe including, in a first form of the invention disclosed, structure for supporting a syringe and projecting the needle of the syringe into a skin tissue area against which a predetermined portion of the device has been placed. Structure is also provided for advancing the plunger of the syringe relative to the barrel portion thereof after the syringe has been projected in order to force the needle thereof into the skin tissue. A second form of the invention includes not only structure for accomplishing these same functions but also additional structure for slightly retracting the plunger of the syringe relative to the barrel portion thereof during the latter portion of the stroke of the syringe during projection of the latter as the syringe needle penetrates the adjacent skin tissue to produce aspiration for detecting whether the needle has penetrated a blood vessel.
Inventors
- 👤 Robert C Tibbs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:49
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/42; A61M5/422; A61M5/178; A61M5/20; A61M5/2033; A61M5/31; A61M2005/3112; A61M5/206; A61M5/46
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
123 words
In combination, a support, a syringe barrel holder mounted on said support for reciprocal shifting along a predetermined path relative to said support in opposite first and second directions for projecting and retracting, respectively, a needle carried by a syringe mounted on said holder, a syringe plunger holder supported from said barrel holder for reciprocal shifting along said path relative to said barrel holder, means yieldingly biasing said holders in said first direction, first and second deactivatable means for retaining said barrel and plunger holders, respectively, against movement in said first direction relative to said support, said second means including means for yieldingly resisting movement of said plunger holder in said first direction as said barrel holder is moved in said first direction.
Claim 2
Dependent Claim
123 words
In combination, a support, a syringe barrel holder mounted on said support for reciprocal shifting along a predetermined path relative to said support in opposite first and second directions for projecting and retracting, respectively, a needle carried by a syringe mounted on said holder, a syringe plunger holder supported from said barrel holder for reciprocal shifting along said path relative to said barrel holder, means yieldingly biasing said holders in said first direction, first and second deactivatable means for retaining said barrel and plunger holders, respectively, against movement in said first direction relative to said support, said second means including means for yieldingly resisting movement of said plunger holder in said first direction as said barrel holder is moved in said first direction.
Claim 3
Dependent Claim
34 words
The combination of claim 1 wherein said second means includes means for freely releasing said plunger holder for movement in said first direction subsequent to movement of said barrel holder in said one direction.
Claim 4
Dependent Claim
66 words
The combination of claim 2 wherein said support includes surface means disposed about a target zone centrally through which the free end of said needle is lengthwise advanced during movement of said barrel holder in said first direction, and fluid discharge means carried by said support and operable to discharge fluid toward said zone from a discharge point spaced in said second direction from said zone.
Claim 5
Dependent Claim
28 words
The combination of claim 1 wherein said barrel holder includes means for supporting said syringe barrel in adjusted shifted positions along said path relative to said barrel holder.
Claim 6
Dependent Claim
28 words
The combination of claim 1 wherein said plunger holder includes means for supporting said syringe plunger in adjusted shifted positions along said path relative to said plunger holder.
Claim 7
Dependent Claim
28 words
The combination of claim 5 wherein said barrel holder includes means for supporting said syringe barrel in adjusted shifted positions along said path relative to said barrel holder.
Claim 8
Dependent Claim
169 words
In combination, a support, a syringe barrel holder on said support for reciprocal shifting along a predetermined path relative to said support in opposite first and second directions for projecting and retracting, respectiveLy, a needle carried by a syringe mounted on said holder, a syringe plunger holder supported from said barrel holder for reciprocal shifting along said path relative to said support, means yieldingly biasing said holders in said first direction, and first and second deactivatable means for retaining said barrel holder and plunger holder against movement in said first direction relative to said support and barrel holder, respectively, said support including surface means disposed about a target zone centrally through which the free end of said needle supported from a hypodermic barrel carried by said barrel holder is lengthwise advanced during movement of said barrel holder in said first direction, and fluid discharge means carried by said support and operable to discharge fluid toward said zone from a discharge point spaced in said second direction from said zone.
Claim 9
Dependent Claim
169 words
In combination, a support, a syringe barrel holder on said support for reciprocal shifting along a predetermined path relative to said support in opposite first and second directions for projecting and retracting, respectiveLy, a needle carried by a syringe mounted on said holder, a syringe plunger holder supported from said barrel holder for reciprocal shifting along said path relative to said support, means yieldingly biasing said holders in said first direction, and first and second deactivatable means for retaining said barrel holder and plunger holder against movement in said first direction relative to said support and barrel holder, respectively, said support including surface means disposed about a target zone centrally through which the free end of said needle supported from a hypodermic barrel carried by said barrel holder is lengthwise advanced during movement of said barrel holder in said first direction, and fluid discharge means carried by said support and operable to discharge fluid toward said zone from a discharge point spaced in said second direction from said zone.
Claim 10
Dependent Claim
188 words
In combination, a support, a syringe barrel holder mounted on said support for reciprocal shifting along a predetermined path relative to said support in opposite first and second directions for projecting and retracting, respectively, a needle carried by a syringe mounted on said holder, a syringe plunger holder supported from said barrel holder for reciprocal shifting along said path relative to said plunger holder, means yieldingly biasing said holders in said first direction, and first and second deactivatable means for retaining said barrel holder and plunger holder against movement in said first direction relative to said support and plunger holder, respectively, the first mentioned means including first and second spring means operatively connected between said support and barrel holder and between said barrel holder and plunger holder, respectively, said support including surface means disposed about a target zone centrally through which the free end of said needle is lengthwise advanced during movement of said barrel holder in said first direction, and fluid discharge means carried by said support and operable to discharge fluid toward said zone from a discharge point spaced in said second direction from said zone.
Claim 11
Dependent Claim
188 words
In combination, a support, a syringe barrel holder mounted on said support for reciprocal shifting along a predetermined path relative to said support in opposite first and second directions for projecting and retracting, respectively, a needle carried by a syringe mounted on said holder, a syringe plunger holder supported from said barrel holder for reciprocal shifting along said path relative to said plunger holder, means yieldingly biasing said holders in said first direction, and first and second deactivatable means for retaining said barrel holder and plunger holder against movement in said first direction relative to said support and plunger holder, respectively, the first mentioned means including first and second spring means operatively connected between said support and barrel holder and between said barrel holder and plunger holder, respectively, said support including surface means disposed about a target zone centrally through which the free end of said needle is lengthwise advanced during movement of said barrel holder in said first direction, and fluid discharge means carried by said support and operable to discharge fluid toward said zone from a discharge point spaced in said second direction from said zone.
Claim 12
Dependent Claim
118 words
In combination, a support, a syringe barrel holder mounted on said support for reciprocal shifting along a predetermined path relative to said support in opposite first and second directions for projecting and retracting, respectively, a needle carried by a syringe mounted on said holder, a syringe plunger holder supported from said barrel holder for reciprocal shifting along said path relative to said barrel holder, means yieldingly biasing said holders in said first direction, first and second deactivatable means for retaining said barrel and plunger holders, respectively, against movement in said first direction relative to said support, said barrel holder including means for supporting said syringe barrel in adjusted shifted positions along said path relative to said barrel holder.
Claim 13
Dependent Claim
118 words
In combination, a support, a syringe barrel holder mounted on said support for reciprocal shifting along a predetermined path relative to said support in opposite first and second directions for projecting and retracting, respectively, a needle carried by a syringe mounted on said holder, a syringe plunger holder supported from said barrel holder for reciprocal shifting along said path relative to said barrel holder, means yieldingly biasing said holders in said first direction, first and second deactivatable means for retaining said barrel and plunger holders, respectively, against movement in said first direction relative to said support, said barrel holder including means for supporting said syringe barrel in adjusted shifted positions along said path relative to said barrel holder.
Claim 14
Dependent Claim
118 words
In combination, a support, a syringe barrel holder mounted on said support for reciprocal shifting along a predetermined path relative to said support in opposite first and second directions for projecting and retracting, respectively, a needle carried by a syringe mounted on said holder, a syringe plunger holder supported from said barrel holder for reciprocal shifting along said path relative to said barrel holder, means yieldingly biasing said holders in said first direction, first and second deactivatable means for retaining said barrel and plunger holders, respectively, against movement in said first direction relative to said support, said plunger holder including means for supporting said syringe plunger in adjusted shifted positions along said path relative to said plunger holder.
Claim 15
Dependent Claim
118 words
In combination, a support, a syringe barrel holder mounted on said support for reciprocal shifting along a predetermined path relative to said support in opposite first and second directions for projecting and retracting, respectively, a needle carried by a syringe mounted on said holder, a syringe plunger holder supported from said barrel holder for reciprocal shifting along said path relative to said barrel holder, means yieldingly biasing said holders in said first direction, first and second deactivatable means for retaining said barrel and plunger holders, respectively, against movement in said first direction relative to said support, said plunger holder including means for supporting said syringe plunger in adjusted shifted positions along said path relative to said plunger holder.
Claim 16
Dependent Claim
28 words
The combination of claim 10 wherein said barrel holder includes means for supporting said syringe barrel in adjusted shifted positions along said path relative to said barrel holder.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-14 | 1976-05-15 | 1976-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-14 | 1980-05-15 | 1980-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-14 | 1984-05-15 | 1984-11-14 | $7700.00 | Window Closed / Lapsed |