Patent US4596330A successfully refreshed from Google Patents.
Patent US6817996B2 successfully refreshed from Google Patents.
US6817996B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liposuction cannula
Assignee: MicroAire Surgical Instruments LLC
•
Filing: 2001-12-06
•
Granted: 2004-11-16
•
Expires: 2021-12-06
Abstract
Abstract A cannula having a bore extending along a length thereof. The cannula includes a vent hole. A plug with an air passage may be inserted within the vent hole such that the air passage is in fluid communication with the bore of the cannula.
Inventors
- 👤 Mike Fard
- 👤 Christopher J. Hudson
- 👤 Daniel L. McCombs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:51
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/71; A61M1/74; A61M1/742; A61M1/84; Y; Y10; Y10S; Y10S604/00; Y10S604/902
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
84 words
A cannula system comprising: a tube having a bore extending along a length thereof; an assembly connecting to a proximal end of the tube; an aspirator tip having openings positioned at another end of the tube remote from the assembly; and an opening acting as a vent hole positioned along the length of the tube away from the assembly, the vent hole having a diameter of approximately between 0.003 and 0.02 inches and which allows air to flow within the bore of the tube.
Claim 2
Dependent Claim
84 words
A cannula system comprising: a tube having a bore extending along a length thereof; an assembly connecting to a proximal end of the tube; an aspirator tip having openings positioned at another end of the tube remote from the assembly; and an opening acting as a vent hole positioned along the length of the tube away from the assembly, the vent hole having a diameter of approximately between 0.003 and 0.02 inches and which allows air to flow within the bore of the tube.
Claim 3
Dependent Claim
23 words
The cannula system of claim 1 , wherein the opening is positioned at substantially a center of the tube to prevent clogging thereof.
Claim 4
Dependent Claim
16 words
The cannula system of claim 1 , further comprising a plug which extends within the opening.
Claim 5
Dependent Claim
59 words
The cannula system of claim 3 , wherein the plug introduces air flow into the tube parallel to a flow of aspirant during suctioning via a plug opening, the plug opening acting as the vent hole which has the diameter of approximately between 0.003 and 0.02 inches and which allows air to flow within the bore of the tube.
Claim 6
Dependent Claim
23 words
The cannula system of claim 4 , wherein the plug further introduces air flow directly into the flow of the aspirant during suctioning.
Claim 7
Dependent Claim
106 words
The cannula system of claim 4 , wherein the plug includes: a cylindrical member having an air passage which leads to the plug opening; a collar portion having a closed end which directs air flow into the plug opening; and and a bulging portion remote from the collar portion, wherein when the plug is inserted within the opening of the tube, the collar acts as a stop by resting on an outer surface of the tube and the cylindrical member is positioned within the bore of the tube such that the plug opening is in substantial alignment with the flow of the aspirant during the suctioning.
Claim 8
Dependent Claim
20 words
The cannula of claim 6 , further comprising a hood with at least one opening placed over the air passage.
Claim 9
Dependent Claim
30 words
The cannula system of claim 1 , wherein the opening maximizes a mass flow rate of material having a density of substantially equal to or above 1000 kg/m 3 .
Claim 10
Dependent Claim
31 words
The cannula system of claim 8 , wherein the opening maximizes the mass flow rate of material having a density of approximately between 1000 kg/m 3 to 1284 kg/m 3 .
Claim 11
Dependent Claim
35 words
The cannula system of claim 1 , wherein the assembly is one of a hub assembly adapted for use with a reciprocating cannula system and a handle adapted for use with a manual cannula system.
Claim 12
Dependent Claim
20 words
The cannula system of claim 1 , wherein the diameter of the hole is approximately between 0.012 and 0.0135 inches.
Claim 13
Dependent Claim
61 words
A cannula system comprising: a tube having a bore extending along a length thereof; an aspirator tip having openings positioned at remote end of the tube and in fluid communication with the bore; an opening positioned along the length of the tube; and a plug positioned with the opening, the plug having an air passageway in fluid communication with the bore.
Claim 14
Dependent Claim
61 words
A cannula system comprising: a tube having a bore extending along a length thereof; an aspirator tip having openings positioned at remote end of the tube and in fluid communication with the bore; an opening positioned along the length of the tube; and a plug positioned with the opening, the plug having an air passageway in fluid communication with the bore.
Claim 15
Dependent Claim
21 words
The cannula system of claim 12 , wherein the air passageway is in fluid communication with an opening in the plug.
Claim 16
Dependent Claim
21 words
The cannula system of claim 13 , wherein the plug opening has a diameter of approximately between 0.012 and 0.0135 inches.
Claim 17
Dependent Claim
27 words
The cannula system of claim 12 , wherein the plug introduces air flow into the tube parallel to and directly into a flow of aspirant during suctioning.
Claim 18
Dependent Claim
23 words
The cannula system of claim 12 , wherein the opening is positioned along substantially a center of the tube along a length thereof.
Claim 19
Dependent Claim
15 words
The cannula system of claim 12 , further comprising a hub remote from the opening.
Claim 20
Dependent Claim
32 words
The cannula system of claim 12 , wherein the plug reduces losses caused by air making a right angle turn and turbulently mixing with a flow of aspirant suctioned through the tube.
Claim 21
Dependent Claim
32 words
The cannula system of claim 18 , wherein the at least one hole has an air flow capacity at least equal to an air flow capacity of the opening of the plug.
Claim 22
Dependent Claim
95 words
The cannula system of claim 12 , wherein the plug includes: a cylindrical member having the air passageway and an opening; and a collar portion having a closed end which directs air flow into the opening, wherein when the plug is inserted within the opening of the tube, the collar acts as a stop by resting on an outer surface of the tube and the cylindrical member is positioned within the bore of the tube such that the opening of the plug is in substantial alignment with the flow of the aspirant during the suctioning.
Claim 23
Dependent Claim
23 words
The cannula system of claim 12 , wherein the plug includes a hood with at least one hole placed over the air passage.
References Cited (Backward Citations)
US5052999A
Cited
EP0509131A1
Cited
US5645540A
Cited
US5830198A
Cited
US5817050A
Cited
US6106516A
Cited
FR2782645A1
Cited
US6235010B1
Cited
US6716194B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2007-11-16 | 2008-05-17 | 2008-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-11-16 | 2012-05-17 | 2012-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-11-16 | 2016-05-17 | 2016-11-16 | $7700.00 | Window Closed / Lapsed |