US3817250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Instrument for performing a tracheostomy and other surgical procedures
Assignee: INT MEDICAL DEVICES Inc
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Filing: 1972-10-24
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Granted: 1974-06-18
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Expires: 1992-10-24
Abstract
Abstract The surgical device herein set forth is adapted for use in emergency tracheostomy procedures, as well as other procedures wherein rapid penetration for aspiration, ventilation and visualization is desired. The device carries an improved split needle, which needle expands under the influence of an airway tube in a more reliable and reproducible fashion than before. The device carries a positive means for limiting penetration into the skin, as well as having means for clearing obstructions in the airway tube.
Inventors
- 👤 S Weiss
- 👤 D Kline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:02
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/04; A61M16/0465; A61M16/0472; A61M16/0402; A61M16/0429
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
254 words
A surgical device adapted to puncture human skin which comprises: a hollow needle having a proximal end portion and a distal end of a normal internal diameter, said distal end of said needle comprising at least two sections which, taken together, terminate in a cutting edge so as to form a means for puncturing skin; means for holding said sections of said distal end of said needle together and to enable said sections of said distal end of said needle to be separable from each other and expand radially from the said normal internal diameter of said distal end; an airway tube movable through said needle from the proximal end portion thereof to the distal end thereof, said airway tube being of largEr outer diameter than the said normal internal diameter of said distal end of said needle whereby to expand radially said distal end of said needle from its normal internal diameter as said airway tube is moved through the distal end of said needle; a collar member secured to said needle at an area remote from said distal end of said needle, the distal end of said collar member terminating short of said cutting edge of said needle when viewed in side elevation, the distal end of said collar member limiting the length of penetration of said needle into said human skin; and a cavity means formed in said collar member, said cavity means enabling expansion of said needle to take place therewithin as said airway tube is moved through said needle.
Claim 2
Dependent Claim
254 words
A surgical device adapted to puncture human skin which comprises: a hollow needle having a proximal end portion and a distal end of a normal internal diameter, said distal end of said needle comprising at least two sections which, taken together, terminate in a cutting edge so as to form a means for puncturing skin; means for holding said sections of said distal end of said needle together and to enable said sections of said distal end of said needle to be separable from each other and expand radially from the said normal internal diameter of said distal end; an airway tube movable through said needle from the proximal end portion thereof to the distal end thereof, said airway tube being of largEr outer diameter than the said normal internal diameter of said distal end of said needle whereby to expand radially said distal end of said needle from its normal internal diameter as said airway tube is moved through the distal end of said needle; a collar member secured to said needle at an area remote from said distal end of said needle, the distal end of said collar member terminating short of said cutting edge of said needle when viewed in side elevation, the distal end of said collar member limiting the length of penetration of said needle into said human skin; and a cavity means formed in said collar member, said cavity means enabling expansion of said needle to take place therewithin as said airway tube is moved through said needle.
Claim 3
Dependent Claim
27 words
The surgical device of claim 1 wherein said collar member is partly tubular and said distal end of said collar member is spaced radially from said needle.
Claim 4
Dependent Claim
41 words
The surgical device of claim 1 wherein a line drawn parallel to said leading edge of said collar forms both an acute and obtuse angle with a line drawn through the longitudinal axis of said needle, when viewed in side elevation.
Claim 5
Dependent Claim
52 words
The surgical device of claim 1 wherein said distal end of said collar member has openings therein, second openings are provided in the walls of said airway tube intermediate the ends of said airway tube, said openings in said collar member increasing air communication with said second openings in said airway tube.
Claim 6
Dependent Claim
35 words
The surgical device of claim 1 wherein said proximal end portion of said needle is split into two sections, each section of which is provided with pivotal means for pivotal movement within said collar member.
Claim 7
Dependent Claim
90 words
The surgical device of claim 1 wherein said needle is formed in two cooperating halves each half of said needle having a hollow concavity formed therein near the cutting edge thereof, an alignment member affixed within the concavity of one of said halves of said needle near the cutting edge thereof and projecting slightly beyond the side edges of said half of said needle, so that the concavity of the other half of the said needle will substantially enclose said alignment member when said needle is in its non-expanded position.
Claim 8
Dependent Claim
32 words
The surgical device of claim 1 having a tubular member of smaller diameter than the inside diameter of said airway tube adapted to move through said airway tube and clear obstructions therefrom.
Claim 9
Dependent Claim
42 words
The surgical device of claim 1 having a pair of radial projection means projecting from said collar member of a size such that the ends of the fingers of a user of said device can grasp each of said radial projection means.
Claim 10
Dependent Claim
19 words
The surgical device of claim 5 wherein said pivotal means comprises laterally projecting ears having facing surfaces that diverge.
Claim 11
Dependent Claim
35 words
The surgical device of claim 1 wherein said airway tube has a stop means limiting movement of said airway tube from the proximal end portion of said needle to the distal end of said needle.
Claim 12
Dependent Claim
26 words
The surgical device of claim 10 wherein said stop means comprises a flared end of enlarged diameter with respect to the diameter of said airway tube.
Claim 13
Dependent Claim
25 words
The surgical device of claim 1 wherein said collar member has means formed on the exterior surface thereof onto which tying threads can be affixed.
Claim 14
Dependent Claim
19 words
The surgical device of claim 1 wherein said airway tube has an internal diameter of from about 3-6 mm.
Claim 15
Dependent Claim
17 words
The surgical device of claim 1 wherein said collar member limits the radial expansion of said needle.
Claim 16
Dependent Claim
24 words
The surgical device of claim 9 wherein the facing surfaces of said projecting ears, when in abutment, limit the radial expansion of said needle.
Claim 17
Dependent Claim
52 words
The surgical device of claim 1 wherein said needle has an intermediate section connecting said proximal end portion and said distal end of said needle, and the external cross-section of said needle is substantially V-shaped commencing in the distal end of said needle and terminating in said intermediate section of said needle.
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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) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |