CA2591646A1 - Improved automatic surgical device and control assembly for cutting a cornea - Google Patents

Improved automatic surgical device and control assembly for cutting a cornea Download PDF

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Publication number
CA2591646A1
CA2591646A1 CA002591646A CA2591646A CA2591646A1 CA 2591646 A1 CA2591646 A1 CA 2591646A1 CA 002591646 A CA002591646 A CA 002591646A CA 2591646 A CA2591646 A CA 2591646A CA 2591646 A1 CA2591646 A1 CA 2591646A1
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CA
Canada
Prior art keywords
cutting
blade
recited
cutting blade
assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002591646A
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French (fr)
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CA2591646C (en
Inventor
Johann F. Hellenkamp
Richard J. Sherin
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Individual
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Individual
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Application filed by Individual filed Critical Individual
Publication of CA2591646A1 publication Critical patent/CA2591646A1/en
Application granted granted Critical
Publication of CA2591646C publication Critical patent/CA2591646C/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/007—Methods or devices for eye surgery
    • A61F9/013—Instruments for compensation of ocular refraction ; Instruments for use in cornea removal, for reshaping or performing incisions in the cornea
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
    • A61B34/10—Computer-aided planning, simulation or modelling of surgical operations
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F2009/0035—Devices for immobilising a patient's head with respect to the instrument
    • A61F2009/0043—Devices for immobilising a patient's head with respect to the instrument by supporting the instrument on the patient's head, e.g. head bands
    • A61F2009/0052—Devices for immobilising a patient's head with respect to the instrument by supporting the instrument on the patient's head, e.g. head bands the instrument being supported on the patient's eye

Abstract

A surgical device for cutting substantially across a cornea of an eye of a patient, the device including a positioning ring structured to be temporally attached to a portion of the eye surrounding the cornea to be cut, and defining an aperture sized to receive and expose the cornea to be cut. The surgical device further includes a cutting head assembly structured to be guided and driven over an upper surface of the positioning ring in a generally arcuate path, and having a cutting element positioned therein and structured to oscillate laterally to facilitate smooth and effective cutting of the cornea. The cutting head assembly is structured to be detachably coupled to the positioning ring by a coupling member which permits movement of the cutting head assembly relative to the positioning ring along the generally arcuate path, but maintains sufficient engagement therebetween to ensure that smooth, steady, driven movement is maintained <IMAGE>

Claims (63)

1. A microkeratome blade assembly to be used with a surgical device that cuts at least partially across a cornea of an eye of a patient, the surgical device including a positioning ring having means for temporary attachment to the eye and structured to present and expose the cornea to be cut, a cutting head assembly structured and disposed to carry said microkeratome blade assembly, and drive means operably connected to the cutting head assembly for causing movement of the cutting head assembly across the positioning ring and for causing oscillating movement of said microkeratome blade assembly, said microkeratome blade assembly comprising:

a) a cutting blade having:
i) a front portion, said front portion including a sharp, forward cutting edge;

ii) a rear, trailing portion including a rear edge;
iii) a pair of side edges extending and tapering between said front portion and said rear trailing portion; and iv) at least one aperture formed therein; and b) a blade holder having an underside, said underside of said blade holder secured to said cutting blade at said at least one aperture formed in said cutting blade, and a top side of said blade holder including means for being operably driven by the drive means of the surgical device.
2. A microkeratome blade assembly as recited in claim 1, wherein said aperture formed within said cutting blade is disposed in said rear, trailing portion of said cutting blade.
3. A microkeratome blade assembly as recited in claim 1 or 2, wherein said means on said blade holder for being operably driven by the drive means comprise a recess formed within said blade holder.
4. A microkeratome blade assembly as recited in any one of claims 1 to 3, wherein said rear edge of said rear portion of said cutting blade is generally parallel to said forward cutting edge of said front portion of said cutting blade.
5. A microkeratome blade assembly as recited in any one of claims 1 to 4, wherein said pair of side edges extending between said front portion and rear trailing portion are rounded.
6. A microkeratome blade assembly comprising: a blade holder and a cutting blade connected to said blade holder, wherein said blade holder includes a top side including means for being operably driven by an oscillating pin.
7. A microkeratome blade assembly as recited in claim 6, wherein said means for being operably driven comprise a recess.
8. A microkeratome blade assembly as recited in claim 6 or 7, wherein said blade is shaped so as to avoid interference with movement along an arcuate path when oscillated.
9. A microkeratome blade assembly as recited in any one of claims 6 to 8, wherein said blade further comprises a front portion and a rear portion, said front portion includes a cutting edge.
10. A microkeratome blade assembly as recited in any one of claims 1 to 5 or 9, wherein said cutting edge of said front portion of said blade is wider than said rear portion.
11. A microkeratome blade assembly as recited in any one of claims 6 to 10, wherein said blade further comprises an aperture, said blade holder secured to said blade at said aperture.
12. A microkeratome blade assembly as recited in claim 11, wherein said blade holder comprises a lock segment structured to extend into said aperture.
13. A microkeratome blade assembly as recited in any one of claims 1 to 12, further comprising a handle removably connected to said blade holder.
14. A microkeratome blade assembly as recited in any one of claims 1 to 13, wherein said blade holder is formed substantially of a plastic material so as to be disposable with said blade.
15. A microkeratome cutting blade assembly for use with a surgical device that cuts at least partially across the cornea of an eye of a patient along an arcuate path, comprising:

a blade having a blade holder attached thereto;
said blade having a front portion and rear portion;
said front blade portion having a cutting edge for cutting a portion of the cornea of an eye;

said front portion having an overall dimension which is larger than the rear portion;
said blade having an edge for engaging said blade holder; and said blade holder having a top side and an underside, said underside having a flanged portion which engages said edge whereby moving said blade holder correspondingly moves said blade.
16. A microkeratome cutting blade assembly as recited in claim 15, wherein said underside of said blade holder is inclined at an angle with respect to said top side, said top side adapted to be driven by a pin.
17. A microkeratome cutting blade assembly as recited in claim 6, said blade holder having an underside secured to said blade and said top side including a recess adapted to receive said oscillating pin.
18. A microkeratome cutting blade assembly as recited in claim 17, wherein said blade holder is formed from a plastic material and is attached to said blade by a press fit.
19. A microkeratome cutting blade assembly as recited in claim 17 or 18, wherein said recess is structured to receive said oscillating pin from a generally vertical plane.
20. A microkeratome cutting blade assembly as recited in any one of claims 17 to 19, wherein said blade holder includes a sidewall which extends between said top side and said underside, said sidewall generally tapering from a front of said blade holder to a back of said blade holder.
21. A microkeratome cutting blade assembly as recited in any one of claims 17 to 19, wherein said blade further comprises an edge and said blade holder comprises a flange for engaging said edge.
22. A cutting blade assembly as recited in claim 1, wherein said cutting blade is substantially flat.
23. A cutting blade assembly as recited in claim 1, wherein said front portion of said cutting blade is larger than said rear, trailing portion.
24. A cutting blade assembly as recited in claim 1, wherein said front portion of said cutting blade has a generally rectangular shape and said rear, trailing portion of said cutting blade has a generally trapezoidal shape.
25. A cutting blade assembly as recited in claim 24, wherein said aperture formed within said cutting blade is disposed in said rear, trailing portion of said cutting blade and has a generally circular shape.
26. A cutting blade assembly as recited in claim 25, wherein said rear, trailing portion of said cutting blade includes a pair of said apertures formed therein and disposed in substantially aligned relation with one another.
27. A cutting blade assembly as recited in claim 1, wherein said aperture formed within said cutting blade is disposed in said rear, trailing portion of said cutting blade and has a generally rectangular shape.
28. A cutting blade assembly as recited in claim 27, wherein said rear, trailing portion of said cutting blade includes a pair of said apertures formed therein and disposed in substantially aligned relation with one another.
29. A cutting blade assembly as recited in claim 3, wherein said recess in said blade holder is generally oval shaped.
30. A cutting blade assembly as recited in claim 1, wherein said blade holder includes a lock segment structured to extend through said aperture in said cutting blade.
31. A cutting blade assembly as recited in claim 30, wherein said lock segment includes a flanged portion structured to engage an edge of said aperture formed in said cutting blade.
32. A cutting blade assembly as recited in claim 1, wherein said sharp, forward cutting edge of said cutting blade is formed to have an angle of approximately between five to ten degrees from a horizontal axis of said cutting blade.
33. A surgical device for cutting substantially across a cornea of an eye of a patient, said device comprising:
a) a positioning ring having means for temporary attachment to a portion of the eye surrounding the cornea to be cut; said positioning ring defining an aperture sized to receive and expose the cornea to be cut;

b) said positioning ring including guide means formed on a upper surface thereof in a generally arcuate path;

c) a cutting head assembly including a cutting element positioned therein for cutting the cornea, said cutting head assembly being structured and disposed to be driven across said positioning ring along said generally arcuate path defined by said guide means;

d) drive means operably coupled to said cutting head assembly for causing movement of said cutting head assembly across said positioning ring and for causing oscillating movement of said cutting element;

e) said cutting head assembly further comprising a main housing including a top surface and a bottom surface, a front end face and a rear end face, a surrounding sidewall structure between said surfaces and faces, an interior chamber structured to receive and maintain a cutting blade assembly in a cutting position, and a cutting opening formed in said bottom surface for exposing a cutting surface of said cutting blade assembly;

f) said cutting blade assembly including a cutting blade having:
i) a front portion, said front portion including a sharp, forward cutting edge defining said cutting surface;

ii) a rear, trailing portion including a rear edge;

iii) a pair of side edges extending and tapering between said front portion and said rear trailing portion; and iv) at least one aperture formed therein; and g) said cutting blade assembly further including a blade holder having an underside, said underside of said blade holder secured to said cutting blade at said at least one aperture formed in said cutting blade, and a top side of said blade holder including means for being operably driven by the drive means of the surgical device.
34. A surgical device as recited in claim 33, wherein said pair of side edges extending between said front portion and said rear trailing portion of said cutting blade are rounded.
35. A surgical device as recited in claim 33, wherein said cutting blade is substantially flat.
36. A surgical device as recited in claim 33, wherein said blade holder is formed substantially of a plastic material so as to be disposable.
37. A surgical device as recited in claim 33, wherein said rear edge of said rear, trailing portion of said cutting blade is generally parallel to said forward cutting edge of said front portion of said cutting blade.
38. A surgical device as recited in claim 33, wherein said front portion of said cutting blade is larger than said rear, trailing portion.
39. A surgical device as recited in claim 38 wherein said front portion of said cutting blade has a generally rectangular shape and said rear, trailing portion of said cutting blade has a generally trapezoidal shape.
40. A surgical device as recited in claim 39, wherein said aperture formed within said cutting blade is disposed in said rear trailing portion of said cutting blade and has a generally circular shape.
41. A surgical device as recited in claim 40, wherein said rear, trailing portion of said cutting blade includes a pair of said apertures formed therein and disposed in substantially aligned relation with one another.
42. surgical device as recited in claim 33, wherein said means on said blade holder for being operably driven by the drive means comprise a recess formed within said blade holder.
43. A surgical device as recited in claim 42, wherein said recess in said blade holder is generally oval shaped.
44. A surgical device as recited in claim 33, wherein said blade holder includes a lock segment structured to extend through said aperture in said cutting blade.
45. A surgical device as recited in claim 44, wherein said lock segment includes a flanged portion structured to engage an edge of said aperture formed in said cutting blade.
46. A surgical device as recited in claim 33, wherein said sharp, forward cutting edge of said cutting blade is formed to have an angle of approximately between five to ten degrees from a horizontal axis of said cutting blade.
47. A surgical device as recited in claim 33, wherein said cutting blade is formed to include at least a second aperture formed therein, said apertures including a
48 generally circular configuration.

48. A surgical device as recited in claim 47, wherein said rear, trailing region of said cutting blade includes said circular apertures in said cutting blade are disposed in substantially aligned relation with one another.
49. A surgical device for cutting substantially across a cornea of an eye of a patient, said device comprising:

a) a positioning ring having means for temporary attachment to a portion of the eye surrounding the cornea to be cut; said positioning ring defining an aperture sized to receive and expose the cornea to be cut;
b) said positioning ring including guide means formed thereon in a generally arcuate path;

c) a cutting head assembly including a cutting element positioned therein for cutting the cornea, said cutting head assembly being structured and disposed to be driven across said positioning ring along said generally arcuate path defined by said guide means;

d) drive means operably coupled to said cutting head assembly for causing movement of said cutting head assembly across said positioning ring and for causing oscillating movement of said cutting element;

e) said cutting head assembly further comprising a main housing including:

i) a top surface and a bottom surface, ii) a front end face and a rear end face, iii) a surrounding sidewall structure between said surfaces and said faces, iv) an interior chamber structured to receive and maintain said cutting element in a cutting position, and a cutting opening formed in said bottom surface for exposing a cutting surface of said cutting element; and v) said surrounding sidewall structure including an access opening formed therein and disposed to generally correspond said interior chamber so that at least said cutting element can be easily inserted and removed from said housing.
50. A surgical device as recited in claim 49 wherein said access opening is structured and disposed to extend completely through said surrounding side wall structure of said cutting head assembly from one side to another.
51. A cutting head assembly to be used with a surgical device that cuts at least partially across a cornea of an eye of a patient, the surgical device including a positioning ring having means for temporary attachment to the eye and structured to present and expose the cornea to be cut, a cutting element structured to cut the cornea and drive means operably connected to said cutting head assembly for causing movement of said cutting head assembly across the positioning ring and for causing oscillating movement of the cutting element, said cutting head assembly comprising:

a) a top surface and a bottom surface, b) a front end face and a rear end face, c) a surrounding sidewall structure between said surfaces and said faces, d) an interior chamber structured to receive and maintain the cutting element in a cutting position, and a cutting opening formed in said bottom surface for exposing a cutting surface of the cutting element; and e) said surrounding sidewall structure including an access opening formed therein and disposed to generally correspond said interior chamber so that at least the cutting element can be easily inserted and removed from said housing.
52. A cutting head assembly as recited in claim 51, wherein said access opening is structured and disposed to extend completely through said surrounding side wall structure of said cutting head assembly from one side to another.
53. A cutting blade assembly to be used with a surgical device that cuts at least partially across a cornea of an eye of a patient, the surgical device including a positioning ring having means for temporary attachment to the eye and structured to present and expose the cornea to be cut, a cutting head assembly including an interior chamber structured and disposed to receive and maintain the cutting blade assembly and further including an access opening formed therein and disposed to generally correspond the interior chamber so that the said cutting blade assembly can be inserted and removed, and drive means operably connected to said cutting head assembly for causing movement of said cutting head assembly across the positioning ring and for causing oscillating movement of the cutting blade assembly, said cutting blade assembly comprising:
a) a cutting blade having:

i) a front portion, said front portion including a sharp, forward cutting edge;
ii) a rear, trailing portion including a rear edge;
iii) a pair of side edges extending between said front portion and said rear trailing portion; and iv) at least one aperture formed therein; and b) a blade holder having an underside, said underside of said blade holder secured to said cutting blade at said at least one aperture in said cutting blade, so as to define an integral blade unit;

c) said blade holder having a top side including means for being lockingly engaging the drive means and for being operably driven by the drive means of the surgical device.
54. A cutting blade assembly as recited in claim 53, wherein said means on said blade holder for being operably driven by the drive means comprise a recess formed within said blade holder structured to receive an oscillating pin of the drive means.
55. A cutting blade assembly as recited in claim 53, wherein said pair of side edges of said cutting blade taper between said front portion and said rear, trailing portion.
56. A cutting blade assembly as recited in claim 53, wherein said blade holder is formed substantially of a plastic material so as to be disposable.
57. A cutting blade assembly as recited in claim 53, wherein said front portion of said cutting blade has a generally rectangular shape and said rear, trailing portion of said cutting blade has a generally trapezoidal shape.
58. A cutting blade assembly as recited in claim 53, wherein said blade holder includes a lock segment structured to extend through said aperture in said cutting blade.
59. A cutting blade assembly as recited in claim 58, wherein said lock segment includes a flanged portion structured to engage an edge of said aperture formed in said cutting blade.
60. A cutting blade assembly as recited in claim 53, further including a handle assembly removably connected to said blade unit and structured to facilitate introduction of said blade unit into the access opening of the cutting head assembly.
61. A cutting blade assembly as recited in claim 60, wherein said handle assembly is structured to be reconnected with said blade unit so as to facilitate removal of said blade unit from the cutting head assembly.
62. A cutting blade assembly as recited in claim 60, wherein said handle assembly includes an elongate stem structured to be threadingly coupled to said blade holder along a side wall thereof.
63. A cutting blade assembly as recited in claim 60, wherein said handle assembly includes an elongate stem integrally formed with said blade holder and structured to be separated therefrom upon introduction of said blade holder in the cutting head assembly.
CA2591646A 1997-04-25 1998-04-24 Improved automatic surgical device and control assembly for cutting a cornea Expired - Lifetime CA2591646C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/845,171 US6051009A (en) 1996-02-07 1997-04-25 Automatic surgical device for cutting a cornea and a cutting blade assembly and control assembly
US08/845,171 1997-04-25
CA2288134A CA2288134C (en) 1997-04-25 1998-04-24 Improved automatic surgical device and control assembly for cutting a cornea

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA2288134A Division CA2288134C (en) 1997-04-25 1998-04-24 Improved automatic surgical device and control assembly for cutting a cornea

Publications (2)

Publication Number Publication Date
CA2591646A1 true CA2591646A1 (en) 1998-11-05
CA2591646C CA2591646C (en) 2010-06-22

Family

ID=25294571

Family Applications (3)

Application Number Title Priority Date Filing Date
CA2288134A Expired - Lifetime CA2288134C (en) 1997-04-25 1998-04-24 Improved automatic surgical device and control assembly for cutting a cornea
CA002288300A Expired - Lifetime CA2288300C (en) 1997-04-25 1998-04-24 Improved automatic surgical device for cutting a cornea and a cutting blade assembly and control assembly therefor
CA2591646A Expired - Lifetime CA2591646C (en) 1997-04-25 1998-04-24 Improved automatic surgical device and control assembly for cutting a cornea

Family Applications Before (2)

Application Number Title Priority Date Filing Date
CA2288134A Expired - Lifetime CA2288134C (en) 1997-04-25 1998-04-24 Improved automatic surgical device and control assembly for cutting a cornea
CA002288300A Expired - Lifetime CA2288300C (en) 1997-04-25 1998-04-24 Improved automatic surgical device for cutting a cornea and a cutting blade assembly and control assembly therefor

Country Status (14)

Country Link
US (2) US6051009A (en)
EP (3) EP1364633A3 (en)
JP (3) JP4021499B2 (en)
CN (3) CN1191043C (en)
AT (1) ATE248564T1 (en)
AU (2) AU7259098A (en)
BR (2) BR9808690A (en)
CA (3) CA2288134C (en)
DE (2) DE69817800T3 (en)
DK (1) DK0977532T3 (en)
ES (2) ES2328874T3 (en)
HK (3) HK1030348A1 (en)
PT (1) PT977532E (en)
WO (2) WO1998048748A2 (en)

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