Patent US3840008A successfully refreshed from Google Patents.
US3840008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety hypodermic needle
Assignee: United States Surgical Corp
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Filing: 1972-04-18
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Granted: 1974-10-08
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Expires: 1992-04-18
Abstract
Abstract A hypodermic needle for safely injecting fluid into nerve and vessel crowded areas of a patient. The needle comprises a pointed hollow piercing member slidably mounted in a substantially frictionless manner about a hollow fluid delivery tube. The delivery tube has a blunt nose and is longitudinally of a constant diameter, has at least one fluid opening near its blunt end, and is adapted to be connected to a conventional syringe at its other end. The hollow piercing member is connected to the delivery tube by a finger-operated collapsible bar. The bar is provided with a centrally located groove to facilitate collapse at the moment the operator removes the force of his finger. The blunt nose delivery tube is then free to penetrate into the tissue of the patient without endangering nerve or vessel.
Inventors
- 👤 D Noiles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:42
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/31; A61M5/32; A61M5/3286; A61M5/3287; A61M5/329; A61M5/3291
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
190 words
An apparatus for associating with a syringe and for safely administering a hypodermic injection to a patient, the apparatus comprising: an elongated hollow delivery tube having a substantially uniform diameter over a major portion of its length and being substantially rigid; a blunt nose at one end of said delivery tube; at least one opening in said delivery tube for delivering the injection to a patient; mounting means at the end of the delivery tube remote from said blunt nose for associating with a syringe; a sharp pointed piercing member slidably mounted on said elongated delivery tube in a substantially frictionless manner; substantially rigid control means for maintaining said piercing member over said blunt nose while said sharp pointed piercing member is inserted into the tissue of a patient and while a force is applied thereto by the operator administering the hypodermic injection; and means for disabling said substantially rigid control means upon removal of said force for allowing said piercing member to slide along the length of said delivery tube in the direction of said mounting means after said sharp pointed piercing member has been inserted in said tissue.
Claim 2
Independent Claim
190 words
An apparatus for associating with a syringe and for safely administering a hypodermic injection to a patient, the apparatus comprising: an elongated hollow delivery tube having a substantially uniform diameter over a major portion of its length and being substantially rigid; a blunt nose at one end of said delivery tube; at least one opening in said delivery tube for delivering the injection to a patient; mounting means at the end of the delivery tube remote from said blunt nose for associating with a syringe; a sharp pointed piercing member slidably mounted on said elongated delivery tube in a substantially frictionless manner; substantially rigid control means for maintaining said piercing member over said blunt nose while said sharp pointed piercing member is inserted into the tissue of a patient and while a force is applied thereto by the operator administering the hypodermic injection; and means for disabling said substantially rigid control means upon removal of said force for allowing said piercing member to slide along the length of said delivery tube in the direction of said mounting means after said sharp pointed piercing member has been inserted in said tissue.
Claim 3
Dependent Claim
27 words
The apparatus recited in claim 1, and further comprising: limiting means for controlling the depth of penetration of said piercing member into the tissue of the patient.
Claim 4
Dependent Claim
30 words
The apparatus recited in claim 2, wherein said limiting means takes the form of a collar fixedly associating with said piercing member at a predetermined spacing from the point thereof.
Claim 5
Dependent Claim
27 words
The aPparatus recited in claim 3, wherein said piercing member is metallic, wherein said collar is plastic, and wherein said piercing member is fixed in said collar.
Claim 6
Dependent Claim
19 words
The apparatus recited in claim 1, wherein said control means acts between said piercing member and said delivery tube.
Claim 7
Dependent Claim
42 words
The apparatus recited in claim 5, wherein said control means takes the form of a collapsible bar connected at one end to the piercing member and at the other end to the region of the delivery tube remote from said blunt nose.
Claim 8
Dependent Claim
28 words
The apparatus recited in claim 6, wherein the end of said collapsible bar remote from the blunt nose of the delivery tube is connected to said mounting means.
Claim 9
Dependent Claim
32 words
The apparatus recited in claim 6, wherein said collapsible bar comprises: a front element; a rear element; and an area of reduced cross section intermediate said front element and said rear element.
Claim 10
Dependent Claim
38 words
The apparatus recited in claim 8, and further comprising: collar means fixedly associating with said piercing member for limiting the penetration thereof into the tissue of the patient; wherein said front element is connected to said mounting means.
Claim 11
Dependent Claim
24 words
The apparatus recited in claim 9, wherein said collar means, said collapsible bar and said mounting means are integral and of a plastic material.
Claim 12
Dependent Claim
16 words
The apparatus recited in claim 10, wherein said integral combination of elements are of molded plastic.
Claim 13
Dependent Claim
22 words
The apparatus recited in claim 6, wherein said collapsible bar is controlled by the finger of the operator administering the hypodermic injection.
Claim 14
Independent Claim
224 words
A method for safely administering a hypodermic injection to a patient comprising the steps of: using an apparatus comprising a substantially rigid hollow blunt nose delivery tube over which a sharp pointed piercing member is slidably mounted in a substantially frictionless manner and further comprising substantially rigid control means for maintaining the piercing over the blunt nose while the piercing member is inserted into the tissue of the patient and while a force is applied thereto by the operator administering the hypodermic injection, and means for disabling the substantially rigid control means upon removal of such force; inserting the sharp pointed piercing member a limited depth into the tissue of the patient; maintaining the piercing member over the blunt nose of the delivery tube during the insertion of the piercing member into the skin and tissue of the patient by applying a force to the substantially rigid control means; freeing the relative association of the piercing member and the delivery tube by removing said force from the substantially rigid control means thereby disabling said control means by way of the action of said means for disabling the control means, thereby allowing the piercing member to slide along the delivery tube in a direction away from the blunt nose; and delivering the injection into the patient through at least one aperture in the delivery tube.
Claim 15
Independent Claim
224 words
A method for safely administering a hypodermic injection to a patient comprising the steps of: using an apparatus comprising a substantially rigid hollow blunt nose delivery tube over which a sharp pointed piercing member is slidably mounted in a substantially frictionless manner and further comprising substantially rigid control means for maintaining the piercing over the blunt nose while the piercing member is inserted into the tissue of the patient and while a force is applied thereto by the operator administering the hypodermic injection, and means for disabling the substantially rigid control means upon removal of such force; inserting the sharp pointed piercing member a limited depth into the tissue of the patient; maintaining the piercing member over the blunt nose of the delivery tube during the insertion of the piercing member into the skin and tissue of the patient by applying a force to the substantially rigid control means; freeing the relative association of the piercing member and the delivery tube by removing said force from the substantially rigid control means thereby disabling said control means by way of the action of said means for disabling the control means, thereby allowing the piercing member to slide along the delivery tube in a direction away from the blunt nose; and delivering the injection into the patient through at least one aperture in the delivery tube.
Claim 16
Dependent Claim
42 words
The method recited in claim 13 wherein the depth of penetration of the piercing member into the tissue of the patient is limited by means of a collar fixedly associated with the piercing member at a predetermined spacing from the point thereof.
Claim 17
Dependent Claim
48 words
The method recited in claim 14, wherein the piercing member is maintained over the blunt nose through the means of a collapsible bar connected at one end to the piercing member and at the other end to the region of the delivery tube remote from the blunt nose.
Claim 18
Dependent Claim
32 words
The method recited in claim 15, wherein the collapsible bar comprises a front element, a rear element, and an area of reduced cross section intermediate the front element and the rear element.
Claim 19
Dependent Claim
41 words
The method recited in claim 15, wherein the position of the collapsible bar and hence the spacing between the piercing member and the blunt nose of the delivery tube is controlled by the finger of the operator administering the hypodermic injection.
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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) | 1977-10-07 | 1978-04-08 | 1978-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-07 | 1982-04-08 | 1982-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-07 | 1986-04-08 | 1986-10-08 | $7700.00 | Window Closed / Lapsed |