JP2002102233A - Medical staple driver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a medical driver to be easily operated and to be securely fixable to a staple. SOLUTION: By adopting an open/close lid and a slide cover in the driver, it is not necessary to screw the top of the driver, and a staple can be securely held and driven even if the horizontal part of the staple projects as a plate. Further, as the lid is curved, the driver can be easily detached without holding the lid by hand after the staple is driven. The slide cover can be fixed to the shaft more securely with a hold screw and a cross screw. Because of a lock plate and a projection above the shaft, a screw part is completely eliminated, so that the driver is easily operated and securely endures the impact of driving. Moreover, as a plunger is adopted, the trouble such as dropping of the staple during the delivery of the driver between a nurse and a doctor can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical staple driver for driving medical staples.

[0002]

2. Description of the Related Art A conventional medical driving device often has a structure in which a staple is inserted into a hole in a longitudinal direction at a tip and a side surface of the staple is directly screwed from the side.

[0003]

In the conventional screw-in type driving device of the prior art, since the side of the staple is directly fixed with a screw, the screw is stopped at a portion close to the distal end, and the screw rises after the driving. Buried in the tissue
Rotation may not be possible. In addition, since the screw is pressed with only a small area at the tip of the screw, a sufficient fixing force cannot be obtained, and staples are likely to be loose.

When medical staples are used for the purpose of fixing ligaments or the like, a double stapling method in which two staples are usually driven side by side is performed. In this case, one of the two staples often has a horizontal portion protruding in a plate shape in order to secure a constant distance between the staples. It is inserted into the hole in the vertical direction at the tip of the driver, and just by screwing it from the side, the gap between the legs under the protruding plate part increases,
After all, staples cannot be fixed securely.

[0005]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a staple at the end of a shaft which has a dent adapted to the shape of the rear end of the staple, and covers the dent from above. When the lid is closed, the staple rear end is pressed into the dent when the lid is closed, and the slide cover with the structure that covers the shaft is pushed out along the shaft in the tip direction, and the lid and the shaft are pushed from the outside. The wrapping staple is fixed, and the screw near the tip of the driver is not required. In addition, even when the staple has a horizontal portion protruding in a plate shape, the staple can be securely fixed.

The rear end of the openable lid is curved upward, and a hole is formed in the upper end of the slide cover. When the slide cover is pushed forward, the lid is closed and the slide cover is moved to the rear end. When pulled back in the direction, the curved part toward the upper part of the rear end of the lid enters the hole at the upper end of the slide cover, and the lid is opened in conjunction with it, making the operation easier.

Further, as a method of fixing the slide cover, a hold screw is connected to the rear end of the slide cover, and when the slide cover is pushed into the tip, the slide cover is fixed to the shaft by threading on the shaft surface and inside the hold screw. Or a structure in which the slide cover is fixed to the shaft using a lateral screw from the lateral direction of the slide cover toward the shaft.

Further, as a further added value, the slide cover extends long to the vicinity of the rear end of the shaft and is also used as a grip, a projection for preventing movement is provided in the middle of the shaft, and a lock plate is provided at the rear end of the slide cover with a hinge. In the center of the slide cover, a window is opened in an area that accommodates the movement prevention protrusion and the lock plate.When the slide cover is located at the tip and the staple is fixed, the lock plate is moved to the shaft side. A mechanism to prevent the slide cover from moving back and forth by closing the window at the center of the slide cover together with the movement prevention protrusion when the slide cover is tilted down. Further, when the slide cover is pulled to the rear end, it is a stopper with a built-in spring to temporarily fix it to the shaft surface to keep it lightly so that it does not move by its own weight, or also to temporarily lock the lock plate when it is lowered to the shaft side. The structure incorporates a plunger, pursuing convenience.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a dent according to the shape of the staple rear end for accommodating staples at the tip of the shaft according to claim 1, and an openable lid 1 is connected so as to cover the dent from above, and the lid 1 is closed. When the rear end of the staple is pressed into the recess and the slide cover 2 having a structure for covering the shaft 4 is pushed forward along the shaft 4, the cover 1 and the shaft 4 are wrapped from the outside to fix the staples. 4 shows a staple driver. As a method for fixing the slide cover 2, a hold screw 3 is connected to the rear end of the slide cover 2 according to claim 3, and when the slide cover 2 is pushed into the front end, a screw is formed on the surface of the shaft 4 and inside the hold screw 3. The structure which fixes the slide cover 2 to the shaft 4 by cutting is adopted. The hold screw 3 and the slide cover 2 are incorporated by unevenness, so that even if the hold screw 3 is turned, the rotation is not transmitted to the slide cover 2 but can be moved back and forth.

FIG. 2 shows that the rear end of the openable / closable lid according to the second aspect is curved upward, and a hole is formed in the upper end of the slide cover 2. Is closed, and when the slide cover 2 is pulled back in the rear end direction, a portion curved upward to the rear end of the lid 1 enters a hole at the top end of the slide cover 2 and the lid 1 opens in conjunction with the staple driver. ing. After the staples are driven in, they can be easily removed without putting a hand on the lid.

FIG. 3 shows a staple driving device having a structure in which the slide cover 2 is fixed to the shaft 4 using lateral screws 5 from the lateral direction of the slide cover 2 toward the shaft 4 according to the fourth aspect. A large force is required to reliably drive the staples into the cortical bone, but at the same time, a large moment of inertia is applied to the slide cover 2. Horizontal screw 5
When the shaft 4 is inserted as deep as possible into the shaft 4, the fixing force increases.

FIG. 4 shows that the slide cover 2 according to claim 5 is extended to near the rear end of the shaft 4 and is also used as a grip. A lock plate 7 is connected to the end by a hinge, and a window is opened in the center of the slide cover 2 by an area where the movement preventing protrusion 6 and the lock plate 7 can be accommodated. The slide cover 2 is located at the front end to fix staples. Lock plate 7
1 shows a staple driver having a mechanism for closing the window at the center of the slide cover 2 together with the movement preventing protrusion 6 to prevent the slide cover 2 from moving back and forth when the is folded down toward the shaft side. When the staple is driven in, the surgeon grasps the slide cover 2 and the lock plate 7 at the same time, so that the sense of stability in which the slide cover and the shaft are integrated is sufficient. Further, plungers 8a and 8b which are stoppers with a built-in spring according to claim 6 are also provided. When the slide cover 2 is pulled to the rear end, 8b is provided as a projection on the shaft surface to lightly stop the slide cover 2 from moving by its own weight, and a recess is provided inside the rear end of the slide cover 2 to receive it. Also, when the lock plate 7 is lowered to the shaft 4 side, temporary fixing is necessary. Therefore, a plunger 8a is provided inside the slide cover 2 and a concave portion for receiving the lock plate 7 is provided at the tip of the lock plate 7. Due to the effects of the plungers 8a and 8b, troubles such as staples falling out can be prevented before delivery of the driving tool between the nurse and the doctor.

[0013]

The present invention is embodied in the form described above and has the following effects.

By employing the openable / closable lid according to the first aspect, screwing at the tip is not required. At the same time, even when the horizontal portion is a staple projecting in a plate shape, the staple can be securely held and driven. According to the second aspect, after the staple is driven in, the detachment can be easily performed without putting a hand on the lid. According to the third and fourth aspects, the slide cover can be securely fixed to the shaft.

According to the fifth aspect of the present invention, the screw portion is completely eliminated, the operation is simple, and the structure can reliably withstand the impact of driving. Further, the use of the plunger according to the sixth aspect can prevent troubles such as staples falling off when the driving tool is transferred between the nurse and the doctor.

[Brief description of the drawings]

FIG. 1 is a side view and a partial front sectional view of a driving tool according to claims 1 and 3;

FIG. 2 is an external view of a driving tool according to claim 2;

FIG. 3 is a side view and a front view of the driving tool according to claim 4;

FIG. 4 is a front view and a side view showing opening and closing of the driving tool according to claims 5 and 6;

[Explanation of symbols]

 1 lid 2 slide cover 3 hold screw 4 shaft 5 side screw 6 movement prevention protrusion 7 lock plate 8 plunger

Claims (6)

[Claims] An opening / closing lid (1) is connected at the tip of the shaft (4) so as to store staples in accordance with the shape of the rear end of the staple. When the staple is closed, the rear end of the staple is pressed into the recess, and the slide cover (2) having a structure for covering the shaft (4) is pushed forward along the shaft (4). ) A staple driver for medical use, which has a structure that wraps the staple from outside and fixes the staple. 2. The medical staple driver, wherein the rear end of an openable lid (1) is curved upward, and the slide cover (2) is provided with a hole at the upper end thereof. When 2) is pushed toward the front end, the rear end of the curved lid protrudes upward from the hole of the slide cover (2) and at the same time the lid front end closes, and when the slide cover (2) is pulled back toward the rear end, the lid (1) is closed. The medical staple driver according to claim 1, characterized in that a curved portion toward the upper end of the end enters a hole at the upper end of the slide cover (2) and the lid (1) opens in conjunction therewith. 3. A holding screw (3) having a structure for covering a shaft (4) is connected to a rear end of the slide cover (2) of the medical staple driving device, and the slide cover (2) is connected to a tip end of the slide cover (2). The slide cover (2) is screwed into the shaft (4) surface and the inside of the hold screw (3) when the slide cover (2) is pushed into the shaft (4).
3. The structure according to claim 1, further comprising:
The medical staple driver according to the above. 4. The medical staple driver has a threaded hole formed in a lateral direction of the slide cover (2) and the shaft (4), and uses a lateral screw (5) toward the shaft (4). Slide cover (2) to shaft (4)
3. The structure according to claim 1, further comprising:
The medical staple driver according to the above. 5. The medical staple driving device, wherein the slide cover (2) extends long to the vicinity of the rear end of the shaft (4) and also serves as a grip, and the movement preventing projection (6) is provided in the middle of the shaft (4). ), A lock plate (7) is hingedly connected to the rear end of the slide cover (2), and these movement preventing projections (6) and lock plate (7) are provided at the center of the slide cover (2). When the lock plate (7) is lowered to the shaft side when the slide cover (2) is positioned at the tip and the staples are fixed and the window is open for the area where the The slide cover (2) has a structure in which the center window is closed to prevent the slide cover (2) from moving forward and backward, and the slide cover (2) and the shaft (4) are integrated. Motomeko 1 and 2 medical stapling device according. 6. When the slide cover (2) is pulled to the rear end of the medical staple driver, the slide cover (2) is lightly stopped from moving by its own weight, or the lock plate (7) is removed. 6. A structure according to claim 1, characterized in that it has a structure in which a plunger (8a, 8b) which is a stopper with a built-in spring is charged in order to temporarily fix it when it is dropped on the shaft side. Medical staple driver.