US5853384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid jet surgical cutting tool and aspiration device
Assignee: Surgijet Inc
•
Filing: 1995-05-08
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Granted: 1998-12-29
•
Expires: 2015-05-08
Abstract
Abstract An instrument for providing high pressure fluid pulses for cutting tissue including an internal pressure intensifying mechanism, and the provision of a suction force at the distal end of the instrument including an internal vacuum generating device to increase the suction force provided by a conventional suction source. A piston mechanism is provided for converting a low pressure fluid input to a high pressure fluid output, and a second piston mechanism is provided to intensify the suction force created by a conventional suction source at the surgical site.
Inventors
- 👤 Scott Bair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:05
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3203; A61B2017/00017; A61B2017/00137; A61B2017/00154; A61B2017/00535; A61B2017/00544; A61B2217/00; A61B2217/002; A61B2217/005; A61F; A61F9/00; A61F9/007; A61F9/00736
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
155 words
A surgical instrument for aspirating fluid and debris from a surgical site, comprising a housing; cannula means extending from said housing; a suction source disposed in said housing for aspirating fluid and debris from said surgical site; a fluid port disposed on said housing for transporting aspirated fluid and debris from said housing, said suction source being disposed intermediate said cannula means and said fluid port; said suction source including vacuum generating means for creating a suction force at a distal end of said cannula means; a gas source connected to said instrument and a venting valve disposed in said housing; wherein said vacuum generating means comprises a piston member driven by said gas source and said venting valve, said gas source and said valve cooperating to reciprocatingly advance and retract said piston member; said vacuum generating means further including a biasing spring for retracting said piston member during venting of gas through said valve.
Claim 2
Dependent Claim
155 words
A surgical instrument for aspirating fluid and debris from a surgical site, comprising a housing; cannula means extending from said housing; a suction source disposed in said housing for aspirating fluid and debris from said surgical site; a fluid port disposed on said housing for transporting aspirated fluid and debris from said housing, said suction source being disposed intermediate said cannula means and said fluid port; said suction source including vacuum generating means for creating a suction force at a distal end of said cannula means; a gas source connected to said instrument and a venting valve disposed in said housing; wherein said vacuum generating means comprises a piston member driven by said gas source and said venting valve, said gas source and said valve cooperating to reciprocatingly advance and retract said piston member; said vacuum generating means further including a biasing spring for retracting said piston member during venting of gas through said valve.
Claim 3
Dependent Claim
204 words
A surgical instrument for aspirating fluid and debris from a surgical site, comprising a housing; cannula means extending from said housing; a suction source disposed in said housing for aspirating fluid and debris from said surgical site; a fluid port disposed on said housing for transporting aspirated fluid and debris from said housing, said suction source being disposed intermediate said cannula means and said fluid port; a remote suction source; said fluid port including connection means for coupling said fluid port to said remote suction source, said remote suction source supplying a constant suction force to said cannula means, and said suction source disposed in said housing being adapted to selectively intensify said constant suction force; switch means for selectively energizing and de-energizing said suction source disposed in said housing; said suction source in said housing comprising a spring biased piston member disposed in a chamber, a first end of said chamber defining a driving chamber having a gas source and venting port, said gas source providing a force for driving said piston member against said spring, and said venting port being operable to release said gas force to permit said piston member to return to an at rest position under said spring biasing.
Claim 4
Dependent Claim
204 words
A surgical instrument for aspirating fluid and debris from a surgical site, comprising a housing; cannula means extending from said housing; a suction source disposed in said housing for aspirating fluid and debris from said surgical site; a fluid port disposed on said housing for transporting aspirated fluid and debris from said housing, said suction source being disposed intermediate said cannula means and said fluid port; a remote suction source; said fluid port including connection means for coupling said fluid port to said remote suction source, said remote suction source supplying a constant suction force to said cannula means, and said suction source disposed in said housing being adapted to selectively intensify said constant suction force; switch means for selectively energizing and de-energizing said suction source disposed in said housing; said suction source in said housing comprising a spring biased piston member disposed in a chamber, a first end of said chamber defining a driving chamber having a gas source and venting port, said gas source providing a force for driving said piston member against said spring, and said venting port being operable to release said gas force to permit said piston member to return to an at rest position under said spring biasing.
Claim 5
Dependent Claim
38 words
A surgical instrument according to claim 2, wherein a second end of said chamber defines a suction chamber, said piston member including a seal for creating a suction force as said piston member returns under said spring biasing.
Claim 6
Dependent Claim
22 words
A surgical instrument according to claim 3, wherein said housing includes means for delivering a source of irrigation fluid to said cannula.
Claim 7
Dependent Claim
206 words
A surgical instrument for aspirating fluid and debris from a surgical site, comprising: a housing; cannula means extending from said housing including a central passageway; means for generating a vacuum disposed in said housing and in fluid communication with said central passageway of said cannula means; a discharge port in fluid communication with said central passageway and said vacuum generating means for transporting aspirated fluid and debris from said housing; a suction source remote from said housing, said discharge port being in fluid communication with said remote suction source and said vacuum generating means; said remote suction source providing a constant suction force at a distal end of said cannula means, said vacuum generating means being adapted to selectively intensify said remote suction source; said vacuum generating means including switch means to selectively energize and de-energize said vacuum generating means; said vacuum generating means comprising a spring biased piston, said piston including sealing means for creating a suction force, said piston being gas driven to reciprocate within said housing; a chamber, said piston reciprocating in said chamber, said chamber including a drive portion including a port for said gas and a vent port, said chamber further including a suction portion in communication with said discharge port.
Claim 8
Dependent Claim
206 words
A surgical instrument for aspirating fluid and debris from a surgical site, comprising: a housing; cannula means extending from said housing including a central passageway; means for generating a vacuum disposed in said housing and in fluid communication with said central passageway of said cannula means; a discharge port in fluid communication with said central passageway and said vacuum generating means for transporting aspirated fluid and debris from said housing; a suction source remote from said housing, said discharge port being in fluid communication with said remote suction source and said vacuum generating means; said remote suction source providing a constant suction force at a distal end of said cannula means, said vacuum generating means being adapted to selectively intensify said remote suction source; said vacuum generating means including switch means to selectively energize and de-energize said vacuum generating means; said vacuum generating means comprising a spring biased piston, said piston including sealing means for creating a suction force, said piston being gas driven to reciprocate within said housing; a chamber, said piston reciprocating in said chamber, said chamber including a drive portion including a port for said gas and a vent port, said chamber further including a suction portion in communication with said discharge port.
Claim 9
Dependent Claim
56 words
A surgical instrument according to claim 5, wherein said piston reciprocates in said chamber as said gas is charged into said drive portion and then vented from said vent port, said gas driving said piston against said spring, said spring returning said piston to an at rest position as said gas vents through said vent port.
Claim 10
Dependent Claim
111 words
A surgical instrument comprising: a low pressure suction source and a low pressure fluid source; a housing including connection means for coupling to the low pressure suction source and the low pressure fluid source; a cannula extending from said housing; a pressure amplifying means disposed within said housing; vacuum generating means disposed within said housing and in communication with the suction source; wherein said amplifying means generates a high pressure fluid output at a distal end of said cannula, and wherein said vacuum generating means amplifies a suction force generated by the suction source; said connection means connecting the fluid source with said pressure amplifying means and said vacuum generating means.
Claim 11
Dependent Claim
111 words
A surgical instrument comprising: a low pressure suction source and a low pressure fluid source; a housing including connection means for coupling to the low pressure suction source and the low pressure fluid source; a cannula extending from said housing; a pressure amplifying means disposed within said housing; vacuum generating means disposed within said housing and in communication with the suction source; wherein said amplifying means generates a high pressure fluid output at a distal end of said cannula, and wherein said vacuum generating means amplifies a suction force generated by the suction source; said connection means connecting the fluid source with said pressure amplifying means and said vacuum generating means.
Claim 12
Dependent Claim
53 words
A surgical instrument according to claim 7, wherein said vacuum generating means comprises a piston member which defines at least a suction chamber and a driving chamber, said driving chamber being connected to said gas source and including a vent port, said gas source and vent port cooperating to reciprocate said piston member.
Claim 13
Dependent Claim
40 words
A surgical instrument according to claim 8, wherein said piston member includes a spring to bias said piston member towards said driving chamber, such that said gas source, said vent port and said spring cooperate to reciprocate said piston member.
Claim 14
Dependent Claim
28 words
A surgical instrument according to claim 9, wherein said piston member includes a sealing member for creating a suction force as said piston member reciprocates in said housing.
Claim 15
Dependent Claim
56 words
A surgical instrument according to claim 10, wherein said piston reciprocates in said chamber as said gas is charged into said drive chamber and then vented from said vent port, said gas driving said piston against said spring, said spring returning said piston to an at rest position as said gas vents through said vent port.
Claim 16
Dependent Claim
49 words
A surgical instrument according to claim 8, wherein said pressure amplifying means comprises a piston member which separates an interior of said housing into at least a driving chamber and a retracting chamber, said chambers being connected to said gas source to effect reciprocating motion of said piston member.
Claim 17
Dependent Claim
31 words
A surgical instrument according to claim 12, wherein said pressure amplifying means converts a low pressure fluid input from said fluid source into a high pressure fluid output through said cannula.
References Cited (Backward Citations)
US3353537A
Cited
US3515130A
Cited
US3452745A
Cited
US3542017A
Cited
US3561433A
Cited
US3605745A
Cited
US3792701A
Cited
US3768472A
Cited
US3811795A
Cited
US3906954A
Cited
US4018623A
Cited
US3930505A
Cited
US3994297A
Cited
US4319570A
Cited
US4282867A
Cited
US4278078A
Cited
US4412823A
Cited
US4921476A
Cited
US4365752A
Cited
US4515532A
Cited
US4655197A
Cited
US4560373A
Cited
US4534340A
Cited
US4561856A
Cited
US4589412A
Cited
US4583531A
Cited
US4570632A
Cited
USRE33258E
Cited
EP0175096A1
Cited
US4690672A
Cited
AU6275086A
Cited
US5135482A
Cited
WO1987006455A1
Cited
US4898574A
Cited
US4705500A
Cited
EP0253478A1
Cited
US4764165A
Cited
US4795448A
Cited
US4790824A
Cited
US4776840A
Cited
US4913698A
Cited
US4817599A
Cited
EP0411170A1
Cited
US4950238A
Cited
EP0356372A2
Cited
US4861340A
Cited
US4944726A
Cited
US5033961A
Cited
US5046486A
Cited
US5019037A
Cited
US5049124A
Cited
US5037431A
Cited
US5064413A
Cited
US5135484A
Cited
US5176645A
Cited
US5218956A
Cited
US5562692A
Cited
US5441482A
Cited
US5591184A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-12-28 | 2002-06-29 | 2002-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-12-28 | 2006-06-29 | 2006-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-12-28 | 2010-06-29 | 2010-12-29 | $7700.00 | Window Closed / Lapsed |