CA2569903A1 - Surgical scissors and like articles - Google Patents
Surgical scissors and like articles Download PDFInfo
- Publication number
- CA2569903A1 CA2569903A1 CA 2569903 CA2569903A CA2569903A1 CA 2569903 A1 CA2569903 A1 CA 2569903A1 CA 2569903 CA2569903 CA 2569903 CA 2569903 A CA2569903 A CA 2569903A CA 2569903 A1 CA2569903 A1 CA 2569903A1
- Authority
- CA
- Canada
- Prior art keywords
- tool
- thumb
- ring
- scissors
- arms
- 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.)
- Abandoned
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
- A61B17/29—Forceps for use in minimally invasive surgery
- A61B17/2909—Handles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/3201—Scissors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B17/3421—Cannulas
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/0042—Surgical instruments, devices or methods, e.g. tourniquets with special provisions for gripping
- A61B2017/00424—Surgical instruments, devices or methods, e.g. tourniquets with special provisions for gripping ergonomic, e.g. fitting in fist
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
- A61B17/29—Forceps for use in minimally invasive surgery
- A61B17/2909—Handles
- A61B2017/2911—Handles rings
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Pathology (AREA)
- Ophthalmology & Optometry (AREA)
- Surgical Instruments (AREA)
Description
SURGICAL SCISSORS AND LIKE ARTICLES
The present invention relates to the field of tools. In particular, the present invention relates to hand tools such as scissors, medical clamps, suture holders, forceps and the like.
A large number of tools and medical instruments exhibit the general configuration of a pair of scissors. That is, they have a pair of arms hinged together at a point along their length;
the arms at the working end of the tool may be moved back and forth, to manipulate, grasp, hold, cut, or clamp a substrate, by moving the free ends of the arms together or apart. The free ends of the arms are typically provided with rings that are dimensioned to fit, in the case of one arm, the thumb of a person, and in the case of the other arm, one or two fingers of the person. The thumb ring and finger ring are generally coplanar. That is, the central axis of the aperture of the thumb ring is substantially parallel to the central axis of the aperture of the finger ring. This arrangement has been fairly constant for scissors and tools having a generally scissors-like construction, as described above, for a long time.
However, aligning the thumb parallel to the fingers, for instance, the index and middle fingers together, which is a typical arrangement for scissors rings, can lead to excessive strain in the hand, cramping, and less than optimal control of the tool being used.
Accordingly, a person using scissors or the like will typically engage the thumb ring of the scissors with the thumb at an angle to the central axis of the thumb hole.
This action itself can put strain on the thumb, and requires a large thumb ring to be provided.
Furthermore, it can lead to the scissors or other tool being twisted unnaturally during use.
One attempt to provide a scissors that better accommodates a user's thumb is shown in US5279034. That patent shows a scissors with a finger ring, but no thumb ring, but rather a molded thumb support. A drawback of this approach is that it requires the use of springs to keep the scissors open, and requires a large handle, accommodating the whole hand.
It would be inappropriate for fine medical or dental use.
Another design that has attempted to accommodate the thumb in an ergonomic position is shown in US4742612, which shows a flexibly mounted flattened thumb "loop"
mounted at 45 to the handle and 45 downwardly, on a scissors.
Another design that attempts to accommodate the thumb is shown in US4140124.
That patent shows a thumb pad instead of a loop or ring. The pad is provided with a clip that is intended to keep the thumb on the pad. This design requires that only the end of the thumb be used, which severely limits the uses of the scissors shown in US4140124.
Lastly, USSN 10/954,888, published as US2006/0064879, shows an adjustable ergonomic scissors with both the finger ring and thumb ring shaped to receive a finger and the thumb efficiently. In that design, it is the thumb ring that is turned relative to its usual position.
In contradistinction to the prior art, the present invention provides an ergonomically advantageous design for scissors and like tools and instruments that utilizes traditional finger and thumb rings, positioned in substantially the same part of the tool.
In the present invention, however, the thumb ring is oriented in a unique and novel way.
Accordingly, most of the construction of the tool of the present invention is along traditional lines, so the use of the tool of the present invention requires no re-education for the user. Rather, the user simply grips an otherwise familiar tool in a more comfortable and ergonomically efficient way.
In drawings that illustrate the present invention by way of example:
Figure 1 is a perspective view of a scissors according to the present invention;
Figure 2 is a side view of the scissors of Figure 1;
Figure 3 is a side view of the lower scissors arm of the scissors of Figure 1;
The present invention relates to the field of tools. In particular, the present invention relates to hand tools such as scissors, medical clamps, suture holders, forceps and the like.
A large number of tools and medical instruments exhibit the general configuration of a pair of scissors. That is, they have a pair of arms hinged together at a point along their length;
the arms at the working end of the tool may be moved back and forth, to manipulate, grasp, hold, cut, or clamp a substrate, by moving the free ends of the arms together or apart. The free ends of the arms are typically provided with rings that are dimensioned to fit, in the case of one arm, the thumb of a person, and in the case of the other arm, one or two fingers of the person. The thumb ring and finger ring are generally coplanar. That is, the central axis of the aperture of the thumb ring is substantially parallel to the central axis of the aperture of the finger ring. This arrangement has been fairly constant for scissors and tools having a generally scissors-like construction, as described above, for a long time.
However, aligning the thumb parallel to the fingers, for instance, the index and middle fingers together, which is a typical arrangement for scissors rings, can lead to excessive strain in the hand, cramping, and less than optimal control of the tool being used.
Accordingly, a person using scissors or the like will typically engage the thumb ring of the scissors with the thumb at an angle to the central axis of the thumb hole.
This action itself can put strain on the thumb, and requires a large thumb ring to be provided.
Furthermore, it can lead to the scissors or other tool being twisted unnaturally during use.
One attempt to provide a scissors that better accommodates a user's thumb is shown in US5279034. That patent shows a scissors with a finger ring, but no thumb ring, but rather a molded thumb support. A drawback of this approach is that it requires the use of springs to keep the scissors open, and requires a large handle, accommodating the whole hand.
It would be inappropriate for fine medical or dental use.
Another design that has attempted to accommodate the thumb in an ergonomic position is shown in US4742612, which shows a flexibly mounted flattened thumb "loop"
mounted at 45 to the handle and 45 downwardly, on a scissors.
Another design that attempts to accommodate the thumb is shown in US4140124.
That patent shows a thumb pad instead of a loop or ring. The pad is provided with a clip that is intended to keep the thumb on the pad. This design requires that only the end of the thumb be used, which severely limits the uses of the scissors shown in US4140124.
Lastly, USSN 10/954,888, published as US2006/0064879, shows an adjustable ergonomic scissors with both the finger ring and thumb ring shaped to receive a finger and the thumb efficiently. In that design, it is the thumb ring that is turned relative to its usual position.
In contradistinction to the prior art, the present invention provides an ergonomically advantageous design for scissors and like tools and instruments that utilizes traditional finger and thumb rings, positioned in substantially the same part of the tool.
In the present invention, however, the thumb ring is oriented in a unique and novel way.
Accordingly, most of the construction of the tool of the present invention is along traditional lines, so the use of the tool of the present invention requires no re-education for the user. Rather, the user simply grips an otherwise familiar tool in a more comfortable and ergonomically efficient way.
In drawings that illustrate the present invention by way of example:
Figure 1 is a perspective view of a scissors according to the present invention;
Figure 2 is a side view of the scissors of Figure 1;
Figure 3 is a side view of the lower scissors arm of the scissors of Figure 1;
Figure 4 is a perspective view of the lower scissors arm shown in Figure 3;
Figure 5 is a side view of the upper scissors arm of the scissors of Figure 1, before attachment of a thumb ring;
Figure 6 is a perspective view of the upper scissors arm shown in Figure 5;
Figure 7 is a perspective view of the thumb ring for attachment to the upper scissors arm of Figure 5;
Figure 8 is a top view of the thumb ring of Figure 7;
Figure 9 is a front view of the thumb ring of Figure 7; and Figures 10a, 10b, and 10c are perspective views of alternative embodiments of the present invention.
Referring now to the drawings, the present invention provides a scissors 1, for instance a surgical scissors, having upper 2 and lower 3 arms that are hinged together at a point 4 along their respective lengths.
Hinge point 4 divides the arms 2, 3 into working ends 5, 6 and free ends 7, 8.
The working ends 5, 6, in the case of a scissors, are provided with blade edges 9, 11 that co-act in the manner of conventional scissors blades, to cut any desired substrate. Free ends 7, 8 are provided with means to manipulate the working ends. The free end 8 of lower arm 3 is provided with a finger ring 10 shaped and dimensioned to accommodate one or more fingers, preferably two or three. Finger ring 10 is provided with rounded inner edges for comfort while being used.
Preferably, finger ring 10 is fabricated in one piece with lower arm 3, so as to be extremely rigid. As can be seen in Figure 3, the free end 8, and the working end 6 of the upper arm need not be co-linear. In the example illustrated, the working end 6 of the lower arm 3 is angulated so as to be substantially parallel to a substrate (such as a wound dressing, or a tissue, such as skin) in use. This will permit a physician a better view of the blade in use.
The free end 8 of the upper arm, with ring 10, may also be angulated relative to the main portion of the arm 3, so as to be substantially parallel to the working end of the arm. This will permit a physician's manipulation of the free end of the scissors to be accurately reflected in motion of the working end, without the need to compensate for angular differences between the two ends. It will be understood, however, that different angular arrangements are possible, within the scope of the invention. For instance, the blade and free end may be co-linear, or one may be co-linear with the middle portion of the arm, and the other angled thereto.
The middle portion of the lower arm 3 may be thinner than the remainder of the arm, to accommodate the upper arm 2. The middle portion of the upper arm 2 lies against the middle portion of the lower arm 3, and is hinged thereto at a point 4, by means of a bolt, rivet, or the like.
Upper arm 2 has a working end 5 and a free end 7. Working end 5 is provided with a blade edge 11 that co-acts with blade edge 9 of the lower arm, for the scissors to be used a cutting tool. A blunt end probe 12 may be provided at the end of the working end 5 of upper arm 2. Blunt probe 12 permits the working end of arm 2 to be inserted under tissue or dressing without damaging same until the cutting action of the scissors is applied.
The free end of the upper arm terminates in a thumb ring 12. As shown in Figures 1 and 2, thumb ring 12 is oriented at an angle relative to finger ring 10. The angle between finger ring 10 and thumb ring 12, calculated as viewed from above thumb ring 10, as shown in Figure 2, may be any angle greater than 0 , up to and including 900. In a preferred embodiment, the angle is from 45 to 90 . In a more preferred embodiment, the angle is between 75 and 90 . In a most preferred embodiment, the angle is close to 90 , or at 90 .
Having the angle at 90 permits the thumb to be inserted into the ring in an ergonomically correct position. It also permits the scissors to function equally well when used with the right or left hand. It also permits the scissors to be used "in reverse", with the working end extending to a user, for additional leverage.
Figure 5 is a side view of the upper scissors arm of the scissors of Figure 1, before attachment of a thumb ring;
Figure 6 is a perspective view of the upper scissors arm shown in Figure 5;
Figure 7 is a perspective view of the thumb ring for attachment to the upper scissors arm of Figure 5;
Figure 8 is a top view of the thumb ring of Figure 7;
Figure 9 is a front view of the thumb ring of Figure 7; and Figures 10a, 10b, and 10c are perspective views of alternative embodiments of the present invention.
Referring now to the drawings, the present invention provides a scissors 1, for instance a surgical scissors, having upper 2 and lower 3 arms that are hinged together at a point 4 along their respective lengths.
Hinge point 4 divides the arms 2, 3 into working ends 5, 6 and free ends 7, 8.
The working ends 5, 6, in the case of a scissors, are provided with blade edges 9, 11 that co-act in the manner of conventional scissors blades, to cut any desired substrate. Free ends 7, 8 are provided with means to manipulate the working ends. The free end 8 of lower arm 3 is provided with a finger ring 10 shaped and dimensioned to accommodate one or more fingers, preferably two or three. Finger ring 10 is provided with rounded inner edges for comfort while being used.
Preferably, finger ring 10 is fabricated in one piece with lower arm 3, so as to be extremely rigid. As can be seen in Figure 3, the free end 8, and the working end 6 of the upper arm need not be co-linear. In the example illustrated, the working end 6 of the lower arm 3 is angulated so as to be substantially parallel to a substrate (such as a wound dressing, or a tissue, such as skin) in use. This will permit a physician a better view of the blade in use.
The free end 8 of the upper arm, with ring 10, may also be angulated relative to the main portion of the arm 3, so as to be substantially parallel to the working end of the arm. This will permit a physician's manipulation of the free end of the scissors to be accurately reflected in motion of the working end, without the need to compensate for angular differences between the two ends. It will be understood, however, that different angular arrangements are possible, within the scope of the invention. For instance, the blade and free end may be co-linear, or one may be co-linear with the middle portion of the arm, and the other angled thereto.
The middle portion of the lower arm 3 may be thinner than the remainder of the arm, to accommodate the upper arm 2. The middle portion of the upper arm 2 lies against the middle portion of the lower arm 3, and is hinged thereto at a point 4, by means of a bolt, rivet, or the like.
Upper arm 2 has a working end 5 and a free end 7. Working end 5 is provided with a blade edge 11 that co-acts with blade edge 9 of the lower arm, for the scissors to be used a cutting tool. A blunt end probe 12 may be provided at the end of the working end 5 of upper arm 2. Blunt probe 12 permits the working end of arm 2 to be inserted under tissue or dressing without damaging same until the cutting action of the scissors is applied.
The free end of the upper arm terminates in a thumb ring 12. As shown in Figures 1 and 2, thumb ring 12 is oriented at an angle relative to finger ring 10. The angle between finger ring 10 and thumb ring 12, calculated as viewed from above thumb ring 10, as shown in Figure 2, may be any angle greater than 0 , up to and including 900. In a preferred embodiment, the angle is from 45 to 90 . In a more preferred embodiment, the angle is between 75 and 90 . In a most preferred embodiment, the angle is close to 90 , or at 90 .
Having the angle at 90 permits the thumb to be inserted into the ring in an ergonomically correct position. It also permits the scissors to function equally well when used with the right or left hand. It also permits the scissors to be used "in reverse", with the working end extending to a user, for additional leverage.
As can be seen in Figures 7, 8 and 9, the thumb ring is preferably manufactured as a separate piece, and then will be permanently welded to the free end of the upper arm at the desired angle. The thumb ring is generally shaped like an elliptical band.
It will be noted that the thumb ring is preferably symmetrical, so as to fit the left or right thumb equally well. The thumb ring may be about 1 1/4 inches wide, with an interior width W of about an inch, and an interior height H of about 3/4 inch, which will accommodate most thumb sizes well. The depth D of the thumb ring may be about 0.4 inches, but narrower, or wider rings are possible.
As can be seen from Figures 10a, 10b and 10c, the working end of the tool of the present invention may be a tool other than a scissors, without departing from the spirit of the present invention. In Figure 10a, a forceps version of the present invention is shown. In Figure 10b, a clamp is shown. In Figure 10c, a suture holder is shown.
It will be noted that the thumb ring is preferably symmetrical, so as to fit the left or right thumb equally well. The thumb ring may be about 1 1/4 inches wide, with an interior width W of about an inch, and an interior height H of about 3/4 inch, which will accommodate most thumb sizes well. The depth D of the thumb ring may be about 0.4 inches, but narrower, or wider rings are possible.
As can be seen from Figures 10a, 10b and 10c, the working end of the tool of the present invention may be a tool other than a scissors, without departing from the spirit of the present invention. In Figure 10a, a forceps version of the present invention is shown. In Figure 10b, a clamp is shown. In Figure 10c, a suture holder is shown.
Claims (12)
1. A tool comprising a pair of arms, each arm having a free end and a working end, said pair of arms being hinged together at a hinge point along their respective lengths whereby said working ends may be moved relative to each other by manipulating the free ends of said arms, each said free end terminating in a ring or loop to accommodate one or more fingers, or the thumb, of a person, wherein the ring or loop accommodating a finger or fingers is at angle of about 900 to the axis of the hinge point, and the ring or loop accommodating the thumb is at a fixed angle thereto, wherein 90 > × >= 0.
2. A tool as claimed in claim 1, wherein said thumb ring is at an angle of from 0° to 45 to the axis of the hinge point.
3. A tool as claimed in claim 1, wherein said thumb ring is at an angle of from 0° to 30 to the axis of the hinge point.
4. A tool as claimed in claim 1, wherein said thumb ring is at a angle of from 0° to 15°
to the axis of the hinge point.
to the axis of the hinge point.
5. A tool as claimed in claim 1, wherein said thumb ring is at an angle of about 0° to the axis of the hinge point.
6. A tool as claimed in any one of claims 1 to 5, wherein said working ends of said arms are scissors blades, and said tool is a scissors.
7. A tool as claimed in claim 6, wherein said finger ring is dimensioned to accommodate two fingers.
8. A tool as claimed in claim 7, wherein at least one of said scissors blades is provided with a blunt probe at its tip.
9. A tool as claimed in any one of claims 1 to 5, wherein said working ends of said arms are clamping elements, and said tool is a surgical clamp.
10. A tool as claimed in any one of claims 1 to 5, wherein said working ends of said arms are forceps elements, and said tool is a surgical forceps.
11. A tool as claimed in any one of claims 1 to 5, wherein said working ends of said arms are suture needle holding elements, and said tool is a surgical suture needle holder.
12. A tool as claimed in any one of claims 1 to 11, wherein said thumb ring is fabricated as a generally elliptical band having an axial length adapted to contact the pad of a thumb.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2569903 CA2569903A1 (en) | 2006-12-01 | 2006-12-01 | Surgical scissors and like articles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2569903 CA2569903A1 (en) | 2006-12-01 | 2006-12-01 | Surgical scissors and like articles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2569903A1 true CA2569903A1 (en) | 2008-06-01 |
Family
ID=39521160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2569903 Abandoned CA2569903A1 (en) | 2006-12-01 | 2006-12-01 | Surgical scissors and like articles |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2569903A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106562808A (en) * | 2016-11-11 | 2017-04-19 | 成都迅德科技有限公司 | Haemostatic forceps |
-
2006
- 2006-12-01 CA CA 2569903 patent/CA2569903A1/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106562808A (en) * | 2016-11-11 | 2017-04-19 | 成都迅德科技有限公司 | Haemostatic forceps |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |