CN201768000U - Cutting stitching instrument - Google Patents

Abstract

The utility model provides a cutting stitching instrument. The cutting stitching instrument comprises an upper clamp, a lower clamp, a nail bin, a nail anvil, a nail pushing piece, a cutter, a percussion piece and a cutter pushing rod, wherein the percussion piece and the cutter pushing rod drive the nail pushing piece and the cutter to move; stitching nails are arranged in the nail bin; the percussion piece drives the nail pushing piece to push the stitching nails to the nail anvil; the cutter cuts off tissues positioned between the nail bin and the nail anvil in the moving process; the front end of the percussion piece is provided with a wedge-shaped piece for driving the nail pushing piece to move, and the rear end of the percussion piece is matched with a sliding block which comprises a through hole; the percussion piece comprises a waist-shaped groove; the major axis of the waist-shaped groove is vertical to the bottom surface of the percussion piece; and a pin passes through the through hole and the waist-shaped groove. The cutting stitching instrument has the main advantages that: the instrument is easy to use; friction force between the percussion piece and the lower clamp is greatly reduced; and only small driving force is needed when a doctor operates the instrument, so that the percussion of the instrument is smoother.

Description

cutting stapler

technical field

The utility model relates to a cutting and suturing device for surgical operations, which belongs to the technical field of medical instruments.

Background technique

Surgical cutting staplers are widely used in surgical operations for wound suturing, internal tissue suturing and cutting. A typical surgical cutting stapler, as disclosed in U.S. Patent No. 5,065,929, has two functions of suturing and cutting. While suturing the wound, Excess tissue is excised. As shown in Figure 1, this type of cutting and stapler generally includes upper and lower jaws 4, 5, a closing handle 6 for closing the upper and lower jaws, and an anvil 7 and a staple bin 8 that are relatively arranged at the front ends of the upper and lower jaws. , the nail pusher and the cutter that are arranged in the staple bin 8 and can move relative to the nail bin at the same time, and the firing piece 2 and the pusher rod that drive the nail pusher and the cutter to move, and are arranged in the nail bin The staple pusher pushes the staples to the staple anvil, and the cutter cuts off the tissue between the staple cartridge and the staple anvil.

In the prior art, the bottom surface of the firing piece is against the inner bottom surface of the lower jaw. Since the firing piece will slide relative to the lower jaw, that is, the bottom surfaces of the two will generate friction during the sliding process of the firing piece. Therefore, the doctor is operating A larger driving force is required to drive the firing piece to slide. In addition, when the upper and lower jaws 4, 5 are closed, the upper and lower jaws 4, 5 will bend to a certain extent, so that the frictional force between the firing piece and the lower jaws will be greater.

Utility model content

The purpose of the utility model is to solve the above-mentioned technical problems, and to provide a cutter and stapler with less friction during the firing process.

The purpose of this utility model is achieved through the following technical solutions:

A cutting and stapler, comprising upper and lower jaws, a staple cartridge and an anvil arranged relatively at the front ends of the upper and lower jaws, a nail pushing piece and a cutter that can move relative to the staple cartridge, and driving the nail pushing The firing piece and the pushing knife bar that the cutting knife moves, the staples are arranged in the staple bin, the firing piece drives the pushing piece to push the staples to the anvil, and the cutting knife moves During the process, the tissue located between the staple cartridge and the anvil is cut off. The front end of the firing piece is a wedge-shaped piece that drives the pusher piece to move, and the rear end of the firing piece is matched with a slider. The block includes a through hole, and the firing piece includes a waist-shaped groove, the long axis of the waist-shaped groove is perpendicular to the bottom surface of the firing piece, and a pin passes through the through-hole and the waist-shaped groove.

Further, the distance from the bottom surface of the firing piece to the inner bottom surface of the lower jaw is greater than the distance from the bottom surface of the slider to the inner bottom surface of the lower jaw.

The beneficial effects of the utility model are mainly reflected in that the device is easy to use, the friction force between the percussion plate and the lower jaw is greatly reduced, and the doctor only needs a small driving force when operating, so that the percussion of the device is smoother.

Description of drawings

Below in conjunction with accompanying drawing, technical scheme of the utility model is further described:

Figure 1: Front view of a prior art cutter and stapler.

Figure 2: A schematic diagram of the connection structure of the slider and the firing piece of the cutting and suturing device of the present invention.

Fig. 3: A cross-sectional view of the connection structure of the slider and the firing piece of the cutting and suturing device of the present invention.

Fig. 4: The front view of the lower jaw of the utility model.

in:

1 slider 11 through hole 12 bottom surface

2 Firing piece 21 Waist groove 22 Bottom surface

3 pins 4 upper jaws 5 lower jaws

51 inner bottom surface 6 closing handle 7 nail anvil

8 staples

Detailed ways

The utility model discloses a surgical cutting and suturing device, as shown in Fig. 1, consistent with the prior art, comprising upper and lower jaws 4, 5 and a closing handle 6 pivotally arranged on the lower jaws 5. The front end of the upper jaw 4 is provided with an anvil 7 , and the front end of the lower jaw 5 is oppositely provided with a staple cartridge 8 . The closed handle 6 can move between the open position and the closed position. When the closed handle 6 is in the open position, the upper and lower jaws 4, 5 are in relatively open positions; The lower jaws 4, 5 are in a fully closed position. When the upper and lower jaws 4, 5 are fully closed, since only two connection points are in contact, the upper and lower jaws 4, 5 will be bent to a certain extent.

As in the prior art, the cutting and stapler also includes a staple pusher and a cutter that can move relative to the staple bin 8, and a firing piece 2 and a pusher rod that drive the pusher and the cutter to move, so Staples are arranged in the staple bin 8, and the firing piece 2 drives the nail pusher to push the staples to the anvil 7, and the cutter will be positioned between the staple bin 8 and the anvil 7 during its movement. The tissue in between is severed.

As shown in FIG. 2 to FIG. 4, the front end of the firing piece 2 is a wedge-shaped piece that drives the movement of the nail pushing piece, and the rear end of the firing piece 2 is matched with a slider 1, and the slider 1 includes A through hole 11, the firing piece 2 includes a waist-shaped groove 21, and a pin 3 passes through the through-hole 11 and the waist-shaped groove 21. Since the long diameter of the waist-shaped groove 21 is perpendicular to the bottom surface 22 of the firing piece 2, when the upper and lower jaws 4, 5 are closed, the pin 3 can move in the waist-shaped groove 21, and the final result is that the firing piece 2 can Relative to the slider 1, there is a certain series movement, which reduces the degree of contact between the bottom surface 22 of the firing piece 2 and the inner bottom surface 51 of the lower jaw 5, thereby reducing the contact between the firing piece 2 and the lower jaw during the sliding process. 5 between friction. And because the short diameter of the waist-shaped groove 21 is approximately equal to the diameters of the through hole 11 and the pin 3 , it will not affect the slider 1 to drive the firing piece 2 to slide.

Of course, the opposite design: that is, a through hole is set on the firing piece 2, and a waist-shaped groove is set on the slider 1, which belongs to the equivalent design of the present invention, and is also within the protection scope of the present invention.

Further, in order to reduce friction more effectively in the present invention, the distance from the bottom surface 22 of the firing piece 2 to the inner bottom surface 51 of the lower jaw 5 is greater than the distance from the bottom surface 12 of the slider 1 to the inner bottom surface of the lower jaw 5 The distance from the bottom surface 51. That is, as shown in Figure 3, there is a height difference H between the bottom surface 22 of the firing piece 2 and the bottom surface 12 of the slider 1, so that even when the bottom surface 12 of the slider 1 rubs against the inner bottom surface 51 of the lower jaw 5, There is also a certain distance between the bottom surface 22 of the firing piece 2 and the inner bottom surface 51 of the lower jaw 5 . In this way, the possibility of friction generation can be further reduced.

The utility model still has many specific implementation modes, and all technical solutions formed by equivalent replacement or equivalent transformation all fall within the protection scope of the utility model.

Claims (2)

1. A cutting stapler, comprising upper and lower jaws, a nail bin and an anvil that are relatively arranged on the front end of the upper and lower jaws, a nail pusher and a cutter that can move relative to the nail bin, and drive the The firing piece and the pushing knife rod that the nail pushing piece and the cutter move, the staples are arranged in the staple bin, the firing piece drives the nail pushing piece to push the staples to the anvil, and the cutting knife is in its During the movement, the tissue located between the staple cartridge and the anvil is cut off, and the feature is that: the front end of the firing piece is a wedge-shaped piece that drives the pushing piece to move, and the rear end of the firing piece is connected with a slider Matching, the slider includes a through hole, the firing piece includes a waist-shaped groove, the long diameter of the waist-shaped groove is perpendicular to the bottom surface of the firing piece, and a pin passes through the through-hole and the waist-shaped groove. 2 . The cutting and stapler according to claim 1 , wherein the distance from the bottom surface of the firing piece to the inner bottom surface of the lower jaw is greater than the distance from the bottom surface of the slider to the inner bottom surface of the lower jaw. 3 .

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