Patent US1951482A successfully refreshed from Google Patents.
US6287313B1
Expired / Lapsed
US
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Screw delivery system and method
Assignee: Warsaw Orthopedic Inc
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Filing: 1999-11-23
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Granted: 2001-09-11
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Expires: 2019-11-23
Abstract
Abstract A screw delivery system and method are disclosed for use in a variety of surgical indications. The screw delivery system generally comprises an outer cannula, a guide, and various interventional devices such as bone drill bits and taps as well as an implant driver for inserting a screw. The method disclosed varies by indication, but is ordinarily intended for use as a minimally invasive procedure which is a combination of percutaneous and open techniques wherein a small midline incision is made over a surgical site and the screw delivery system provides a percutaneous portal through an incision distant from the small midline incision over the surgical site.
Inventors
- 👤 Rick Sasso
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:28
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/88; A61B17/8863; A61B17/16; A61B17/1662; A61B17/1671; A61B17/17; A61B17/1735; A61B17/1613; A61B17/1615; A61B17/1655; A61B17/1739; A61B17/1757; A61B17/8875; A61B2017/0042; A61B2017/00424; A61B90/00; A61B90/03; A61B2090/033; A61B2090/034
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
268 words
A screw delivery system kit for providing a minimally invasive portal with a small entry angle to a surgical site, comprising: an outer cannula having a first exterior surface and a first interior surface defining a bore, the first interior surface having a first inner diameter and the first exterior surface having a first outer diameter, the surfaces extending along a first length on a first axis between a first proximal end having a first stop and a first distal end; a trocar having a second exterior surface with a second outer diameter, the second exterior surface extending along a second length on a second axis between a second proximal end having a second stop and a second distal end defining a blunt tip; a guide having a handle and a tube, the tube having a third exterior surface and a third interior surface defining a passageway, the third interior surface having a third inner diameter and the third exterior surface having a third outer diameter, the third interior surface extending between a third proximal end and a third distal end, the third exterior surface extending along a third length on a third axis between a third stop at the third proximal end and the third distal end, the handle being connected to the tube at an angle to the third axis; and a bone drill bit having a fourth exterior surface with a fourth outer diameter extending along a fourth length on a fourth axis between a fourth stop located near a fourth proximal end and a plurality of drilling flutes defined on a fourth distal end.
Claim 2
Dependent Claim
268 words
A screw delivery system kit for providing a minimally invasive portal with a small entry angle to a surgical site, comprising: an outer cannula having a first exterior surface and a first interior surface defining a bore, the first interior surface having a first inner diameter and the first exterior surface having a first outer diameter, the surfaces extending along a first length on a first axis between a first proximal end having a first stop and a first distal end; a trocar having a second exterior surface with a second outer diameter, the second exterior surface extending along a second length on a second axis between a second proximal end having a second stop and a second distal end defining a blunt tip; a guide having a handle and a tube, the tube having a third exterior surface and a third interior surface defining a passageway, the third interior surface having a third inner diameter and the third exterior surface having a third outer diameter, the third interior surface extending between a third proximal end and a third distal end, the third exterior surface extending along a third length on a third axis between a third stop at the third proximal end and the third distal end, the handle being connected to the tube at an angle to the third axis; and a bone drill bit having a fourth exterior surface with a fourth outer diameter extending along a fourth length on a fourth axis between a fourth stop located near a fourth proximal end and a plurality of drilling flutes defined on a fourth distal end.
Claim 3
Dependent Claim
52 words
The kit of claim 1 , further including a bone tap having a fifth exterior surface with a fifth outer diameter extending between a fifth stop located near a fifth proximal end and a fifth distal end having threading thereon for tapping an opening in bone created by said bone drill bit.
Claim 4
Dependent Claim
44 words
The kit of claim 2 , wherein the fifth exterior surface has a plurality of length markings adjacent the fifth stop, the length markings being located on the fifth exterior surface between the fifth stop and the fifth distal end of said bone tap.
Claim 5
Dependent Claim
40 words
The kit of claim 1 , wherein the fourth exterior surface has a plurality of length markings adjacent the fourth stop, the length markings being located on said fourth exterior surface between the fourth stop and the fourth distal end.
Claim 6
Dependent Claim
15 words
The kit of claim 1 , further including an adjustable length stop having a length.
Claim 7
Dependent Claim
18 words
The kit of claim 5 , wherein said adjustable length stop is a series of interconnected cylindrical elements.
Claim 8
Dependent Claim
19 words
The kit of claim 6 , further including a cutter for adjusting the length of said adjustable length stop.
Claim 9
Dependent Claim
41 words
The kit of claim 5 , wherein said adjustable length stop has an outer surface and an inner surface defining a bore with a bore diameter, the bore diameter of said adjustable length stop being greater than the fourth outer diameter.
Claim 10
Dependent Claim
16 words
The kit of claim 1 , wherein the first distal end defines a plurality of serrations.
Claim 11
Dependent Claim
14 words
The kit of claim 9 , wherein the serrations have a crescent moon shape.
Claim 12
Dependent Claim
15 words
The kit of claim 1 , further including an implant driver for inserting a screw.
Claim 13
Dependent Claim
32 words
The kit of claim 11 , wherein said implant driver is a screwdriver, said screwdriver having a handle at a first end and a tip at a second end of said screwdriver.
Claim 14
Dependent Claim
23 words
The kit of claim 12 , wherein the tip of said screwdriver has a polygonal head matching a polygonal socket in the screw.
Claim 15
Dependent Claim
30 words
The kit of claim 1 , wherein the first stop of said outer cannula is the circumference of the exterior surface of said outer cannula at the first proximal end.
Claim 16
Dependent Claim
18 words
The kit of claim 1 , wherein the first stop of said outer cannula is an annular flange.
Claim 17
Dependent Claim
99 words
The kit of claim 1 , further including a bone tap and an adjustable length stop, said bone tap having a fifth exterior surface with a fifth outer diameter extending between a fifth stop located near a fifth proximal end and a fifth distal end having threading thereon for tapping an opening in bone created by said bone drill bit, said adjustable length stop having an outer surface and an inner surface defining a bore with a bore diameter, the bore diameter of said adjustable length stop being greater than the fourth outer diameter and the fifth outer diameter.
Claim 18
Independent Claim
101 words
A method of inserting a screw into a bone through a minimally invasive portal comprising: making a first incision for viewing over a surgical site; making a second incision spaced apart from the first incision; inserting an outer cannula having a bore defined between a proximal end and a distal end and a trocar through the bore into the second incision; advancing the outer cannula and trocar toward the surgical site until the distal end contacts the surgical site; removing the trocar from the outer cannula; drilling an opening in the bone; screwing a screw into the opening in the bone.
Claim 19
Independent Claim
101 words
A method of inserting a screw into a bone through a minimally invasive portal comprising: making a first incision for viewing over a surgical site; making a second incision spaced apart from the first incision; inserting an outer cannula having a bore defined between a proximal end and a distal end and a trocar through the bore into the second incision; advancing the outer cannula and trocar toward the surgical site until the distal end contacts the surgical site; removing the trocar from the outer cannula; drilling an opening in the bone; screwing a screw into the opening in the bone.
Claim 20
Dependent Claim
24 words
The method of claim 17 , further including tapping the opening in the bone before screwing the screw into the opening in the bone.
Claim 21
Dependent Claim
35 words
The method of claim 17 , wherein said bone includes a pair of spinal vertebrae, and wherein said act of screwing comprises screwing at least one screw through one vertebra and into a second vertebra.
Claim 22
Dependent Claim
29 words
The method of claim 19 , herein said act of screwing screws into vertebral bone is done in combination with at least one interbody fusion implant between the vertebrae.
Claim 23
Dependent Claim
24 words
The method of claim 20 , wherein said act of screwing comprises screwing at least one screw across a facet joint of the vertebrae.
Claim 24
Dependent Claim
24 words
The method of claim 20 , wherein said act of screwing comprises transarticular screw fixation of the C 1 and C 2 cervical vertebrae.
Claim 25
Dependent Claim
17 words
The method of claim 17 , wherein said act of screwing comprises screwing a vertebral odontoid fracture.
Claim 26
Dependent Claim
24 words
The method of claim 17 , wherein said act of screwing comprises screwing at least one screw across a facet joint of the vertebrae.
Claim 27
Dependent Claim
24 words
The method of claim 17 , wherein said act of screwing comprises transarticular screw fixation of the C 1 and C 2 cervical vertebrae.
Claim 28
Dependent Claim
52 words
A screw delivery system kit for providing a minimally invasive portal to a surgical site comprising: an outer cannula; a trocar; means for drilling an opening in a bone at the surgical site; means for aiming said means for drilling; and means for screwing a screw into the opening in the bone.
Claim 29
Dependent Claim
52 words
A screw delivery system kit for providing a minimally invasive portal to a surgical site comprising: an outer cannula; a trocar; means for drilling an opening in a bone at the surgical site; means for aiming said means for drilling; and means for screwing a screw into the opening in the bone.
Claim 30
Dependent Claim
38 words
The kit of claim 26 , further including means for tapping the opening in the bone of the surgical site, wherein said means for aiming said means for drilling is also means for aiming said means for tapping.
Claim 31
Dependent Claim
24 words
The kit of claim 26 , further including a screw adapted for transarticular screw fixation of the C 1 and C 2 cervical vertebrae.
Claim 32
Dependent Claim
14 words
The kit of claim 28 , further comprising at least one interbody fusion implant.
Claim 33
Dependent Claim
24 words
The kit of claim 26 , further including a screw adapted for screwing at least one screw across a facet joint of the vertebrae.
Claim 34
Dependent Claim
14 words
The kit of claim 30 , further comprising at least one interbody fusion implant.
Claim 35
Dependent Claim
17 words
The kit of claim 26 , further including a screw adapted for screwing a vertebral odontoid fracture.
Claim 36
Dependent Claim
14 words
The kit of claim 32 , further comprising at least one interbody fusion implant.
Claim 37
Dependent Claim
14 words
The kit of claim 26 , further comprising at least one interbody fusion implant.
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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) | 2004-09-10 | 2005-03-12 | 2005-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-09-10 | 2009-03-12 | 2009-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-09-10 | 2013-03-12 | 2013-09-11 | $7700.00 | Window Closed / Lapsed |