GB2203341A - Recessed ligament knife - Google Patents

Recessed ligament knife Download PDF

Info

Publication number
GB2203341A
GB2203341A GB8708079A GB8708079A GB2203341A GB 2203341 A GB2203341 A GB 2203341A GB 8708079 A GB8708079 A GB 8708079A GB 8708079 A GB8708079 A GB 8708079A GB 2203341 A GB2203341 A GB 2203341A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
ligament
knife
recessed
instrument
recess
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
GB8708079A
Other versions
GB2203341B (en )
GB8708079D0 (en )
Inventor
Robert Wallace Mcfarlane
Original Assignee
Robert Wallace Mcfarlane
Priority date (The priority date 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 date listed.)
Filing date
Publication date

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32Surgical cutting instruments

Abstract

A recessed ligament knife with a cutting edge positioned in a recess at the tip (11) of a bowl shaped structure which is adapted for joint surfaces and which is attached to a shaft (12) and handle (13) which is non-slip. The instrument aids the performance of certain surgical procedures. <IMAGE>

Description

RECESSED LIGAMENT KNIFE This invention is a surgical instrument with a protected blade arrangement to be employed in the safe section of certain internal joint ligaments.

Conventional methods of cutting ligaments using non-specialised instruments eg scissors, can cause unnecessary trauma to surrounding tissues.

This invention allows a guarded cutting edge to be safely applied to tissues in rather inaccessible surgical fields in both animals and humans.

The instrument will now be described with reference to the accompanying drawing in which: Figure 1(A) shows the contour of the instrument from above with the cutting edge (shaped) sited in the recess which opens at the end 11.

Figure 2(A) illustrates the contour of the bowl part of the instrument which is so adapted to suit the joint surfaces 14. Also indicated in figures 1 and 2 are the shaft 12 and the handle 13. With matt (streaked) or non slip surface.

The blade opening and gap is of narrow design to permit entry of ligamentous tissue 11 and the outer edge of the bowl is blunt to ensure the minimum of trauma to surrounding tissue. Figure 2(A) is a cross sectional view of the blade area which illustrates that the cutting edge is on the concave ie inside surface of the bowl.

Figures 3.4(B) display a smaller instrument with the same features described above. To accommodate the variation of size of joints between humans and animals four different sizes of this instrument will be necessary. The small size shown would be required for cats.

NB. The shaft in figure 2 is shortened for reasons of spacing only.

Claims (3)

1. A recessed ligament knife comprising a non-slip handle with a shaft and a bowl shaped end.
2. A narrow recess sited with the opening at the distal end or tip of the instrument.
3. A cutting edge set just within the opening and extending all along the edge of the recess.
GB8708079A 1987-04-03 1987-04-03 Recessed ligament knife Expired - Fee Related GB2203341B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8708079A GB2203341B (en) 1987-04-03 1987-04-03 Recessed ligament knife

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8708079A GB2203341B (en) 1987-04-03 1987-04-03 Recessed ligament knife

Publications (3)

Publication Number Publication Date
GB8708079D0 GB8708079D0 (en) 1987-05-07
GB2203341A true true GB2203341A (en) 1988-10-19
GB2203341B GB2203341B (en) 1991-04-17

Family

ID=10615239

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8708079A Expired - Fee Related GB2203341B (en) 1987-04-03 1987-04-03 Recessed ligament knife

Country Status (1)

Country Link
GB (1) GB2203341B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3909866A1 (en) * 1989-03-01 1990-09-06 S & T Marketing Ag Surgical instrument with grip part
US5387222A (en) * 1993-05-14 1995-02-07 Strickland; James W. Carpal tunnel tome and carpal tunnel release surgery
US5413580A (en) * 1993-06-14 1995-05-09 Stephenson; David V. Carpal tunnel knife
DE19504397A1 (en) * 1994-04-19 1995-10-26 Feather Safety Razor Co Ltd Scalpel for surgical tissue incisions
US5480408A (en) * 1993-10-12 1996-01-02 Chow; James C. Y. Endoscopic surgical kit for release of trigger finger
US5827311A (en) * 1997-05-08 1998-10-27 Biomet Inc Carpal tunnel tome
US5908433A (en) * 1996-05-10 1999-06-01 Stryker Corporation Carpal tunnel knife

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3633583A (en) * 1969-08-22 1972-01-11 Meyer Fishbein Orthopedic single-blade bone cutter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3633583A (en) * 1969-08-22 1972-01-11 Meyer Fishbein Orthopedic single-blade bone cutter

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3909866A1 (en) * 1989-03-01 1990-09-06 S & T Marketing Ag Surgical instrument with grip part
DE3909866C2 (en) * 1989-03-01 1998-08-13 S & T Marketing Ag A surgical instrument
US5387222A (en) * 1993-05-14 1995-02-07 Strickland; James W. Carpal tunnel tome and carpal tunnel release surgery
US5507800A (en) * 1993-05-14 1996-04-16 Strickland; James W. Carpal tunnel tome and carpal tunnel release surgery
US5413580A (en) * 1993-06-14 1995-05-09 Stephenson; David V. Carpal tunnel knife
US5480408A (en) * 1993-10-12 1996-01-02 Chow; James C. Y. Endoscopic surgical kit for release of trigger finger
DE19504397A1 (en) * 1994-04-19 1995-10-26 Feather Safety Razor Co Ltd Scalpel for surgical tissue incisions
US5908433A (en) * 1996-05-10 1999-06-01 Stryker Corporation Carpal tunnel knife
US5827311A (en) * 1997-05-08 1998-10-27 Biomet Inc Carpal tunnel tome

Also Published As

Publication number Publication date Type
GB2203341B (en) 1991-04-17 grant
GB8708079D0 (en) 1987-05-07 grant

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19960403