The present invention relates to a medical staple used for suturing a wound.
Generally, as means for suturing a wound in a surgical operation or the like, other than suture thread, a medical staple is used (refer to JP-B2-2607747). The staple is constituted by a crown portion and needle leg portions bent downward from curved portions on both sides thereof, and the needle leg portions are struck to the skin so as to suture a wound by bending intervals between a center portion of the crown portion and the curved portions to a lower side forcibly by a stapler.
In this way, different from a staple for office use, the medical staple is bent between the center portion of the crown portion and the needle leg portions, the left and right needle leg portions are attracted to each other from outer sides to inner sides to constitute a rectangular shape as a whole.
Further, when the wound is healed to some degree and the staple is not needed, the staple should be removed from the wound. In this case, a remover for removing is used, an upper portion of the center portion of the crown portion is held, lower portions of both sides of the hold portion are pulled up to thereby draw the needle leg portions from the skin to be removed. (refer to JP-B-62-044935)
However, according to the above-described methods of striking and removing, when positions of bending the staple differ from each other on left and right sides in striking the needles, the left and the right skins cannot uniformly be attracted together, the wound is sutured in a state of shifting the wound, a shift may be produced in heights of the skins on both sides of the wound, which is not preferable. Similarly, also in removing the needles, when the hold portion of the center of the crown portion and positions of pulling up the needles on both sides thereof are shifted from each other, there is brought about a drawback that only one of the needle leg portions is drawn and other thereof is not drawn. In this case, the other needle leg portion needs to be drawn out by manual operation, and therefore, time and labor is taken, the skin is damaged considerably, and a pain is inflicted on a patient.
According to one or more embodiments of the invention, there is provided a medical staple capable of piercing left and right needle leg portions of the staple into the skin and drawing out the left and right needle leg portions from the skin uniformly by making positions for folding and pressing the needles in striking the needles and in removing the needles accurate.
In accordance with one or more embodiments of the invention, a medical staple is provided with a crown portion, curved portions provided at both ends of the crown portion, needle leg portions bent downward from the curved portions, a pair of first notches provided at a lower face thereof, and a second notch provided at an upper face thereof between the pair of first notches.
In accordance with one or more embodiments of the invention, the medical staple may be used for narrowing an open wound by striking the needle leg portions into the skin by bending intervals between the center portion of the crown portion and the curved portions by a stapler.
According to the medical staple of one or more embodiments of the invention, when the needle leg portions are struck to the skin by the stapler, the staple is bent substantially by a right angle from the first notches by pressing down both sides of the crown portion. Therefore, the needle leg portions on both sides are uniformly inserted into the skin, and an excellent suture state is achieved.
Further, when the needle leg portions are removed, the staple is bent in a direction reverse to a direction of bending the first notch from the second notch by moving the second notch portion of the crown portion and an interval between the first notch and the second notch in reverse directions on upper and lower sides relatively. In this way, the both left and right sides are bent uniformly, and therefore, the needle leg portions on both sides are drawn out from the skin in the same state.
In accordance with one or more embodiments of the invention, the second notch may be provided at positions remote from the two first notches uniformly by predetermined distances.
In accordance with one or more embodiments of the invention, the first notches may be provided at positions between the center portion of the crown portion and the curved portions.
In accordance with one or more embodiments of the invention, the second notch may include two notches formed at positions of being opposedly remote from each other by interposing the center portion of the crown portion.
According to the medical staple of one or more embodiments of the invention, the two second notches formed at the positions opposedly remote from each other by interposing a center portion of a length of the crown portion in removing the needle leg portions are ensured to be bent uniformly on left and right sides, and therefore, the needle leg portions on both sides achieve to be drawn out from the skin uniformly.
Further, according to one or more embodiments of the invention, the second notch may include one notch formed at the center portion of the crown portion.
According to the medical staple of one or more embodiments of the invention, a single second notch at the center portion of the length of the crown portion in removing the needle leg portions ensures to be bent uniformly on left and right sides, and therefore, the needle leg portions on both sides achieve to be drawn out uniformly despite a simple structure.
Other aspects and advantages of the invention will be apparent from the following description and the appended claims.
Embodiments of the invention will be explained in reference to the drawings as follows.
In
When an operation of suturing a wound is carried out by the staple A, a stapler as shown in JP-B2-2607747 is used, as shown by
Further, when the staple A is removed from the wound, a remover shown in
Further, when the front end projected portion 13 is inserted to an inner side of the opening portion 12 of the remover, there is produced a gap to a degree of being slightly larger than a wall thickness of the staple A between both sides of the front end projected portion 13 and the inner face of the opening portion 12.
Further, although it is preferable that the first notches 6 and the second notch 7 of the staple A are formed by a shape of a V groove, the shape may be a shape of a U groove, or may be a cut shape. In sum, the shape may be a shape by which the staple A is easy to be bent from the portion and is not broken by being bent by one time.
Hence, explaining a case of striking the staple and a case of removing the staple by the staple A, first, in striking the needle, when both sides of the crown portion 1 of the staple A are pressed down by the driver plates 5 of the stapler as shown by
Further, when the staple A is removed, as shown by
In place of the staple A of the above-described embodiment, a staple A′ of the following embodiment illustrated by
According to the staple A′, the position of bending the needle at the crown portion 1 of the staple A is changed.
Specifically, only a single second notch 7 is formed at the upper face portion of the crown portion 1 bent in removing the needle. The second notch 7 formed as the single notch is formed at a center portion of a length of the crown portion 1, and is constituted by a shape of a V groove, a shape of a U groove, or cut shape or the like similar to the second notch 7 of the staple A.
The staple A′ is struck to the skin by bending the first notches 6 at the lower face portions of the curved portions on the both sides by pressing down the driver plates 5 substantially by the right angle quite similar to the staple A. Therefore, illustration thereof is omitted.
On the other and, the needle of the staple A′ is removed by inserting the front end portion 8a of the arm 8 of a remover shown in
Therefore, the staple A′ is bent by the second notch 7 pressed to be inserted to the opening portion 12 of the arm 8 on one side to thereby move in a reverse directions on upper and lower sides relatively by the front end projected portion 13 of the arm 9 on other side by dragging to iron the crown portion 1 in the opening portion 12, whereas according to the staple A, the two notches 7 are bent to thereby fold to bend the crown portion 1 in the shape of the recess groove, simultaneously therewith, the needle leg portions 3 on both left and right sides are pulled up uniformly on left and right sides to be drawn from the skin B, according to the staple A′, the single notch 7 is bent to fold to bend the crown portion 1 in the shape of the V groove, simultaneously therewith, the needle leg portions 3 on both left and right sides are pulled up uniformly on left and right sides to be drawn from the skin B.
Further, in either of the staples A,A′ of the two embodiments, in striking and removing the staple, the first notch 6 and the second notch 7 are bent only by once, and therefore, a deterioration in a strength thereof is minimized, and the staple is not broken from the notch portion.
Further, the operation of striking and removing the staple can efficiently be carried out, and the skin is hardly damaged.
Although an explanation has been given of the invention in details and in reference to the specific embodiments, it is apparent for the skilled person that the invention can variously be changed or modified without deviating from the sprit and the range of the invention.
The application is based on Japanese Patent Application (Japanese Patent Application No.2005-012105) filed on. Jan. 19, 2005, and Japanese Patent Application (Japanese Patent Application No.2005-358689) filed on Dec. 13, 2005, and a content thereof is incorporated herein by reference.
According to one or more embodiments of the medical staple, the left and right needle leg portions 3 can be pierced to the skin and drawn out from the skin uniformly by making positions of bending and pressing the needle in striking the needle and in removing the needle accurate.
Number | Date | Country | Kind |
---|---|---|---|
P.2005-012105 | Jan 2005 | JP | national |
P.2005-358689 | Dec 2005 | JP | national |
Filing Document | Filing Date | Country | Kind | 371c Date |
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PCT/JP06/00632 | 1/18/2006 | WO | 00 | 7/18/2007 |