CN201328853Y - Surgical binding cutting device - Google Patents

Abstract

The utility model provides a surgical binding and cutting device, comprising: a casing, and a knob arranged at the tail of the casing, the knob is threadedly connected with a screw rod arranged inside the casing, and the rotary motion of the knob can drive the screw rod to rotate along its axis. To move, the front end of the shell is fixedly provided with a nail barrel, the nail barrel is provided with a relatively movable nail cartridge and an anvil, the nail anvil is fixed on the nail barrel, and the nail cartridge can It is driven by a push block arranged at the front end of the screw mandrel, and moves toward the nail anvil along a direction perpendicular to the axis of the screw mandrel. The beneficial effects of the utility model are mainly reflected in that it can effectively treat non-circular cut hemorrhoids, can complete the cutting of single or double hemorrhoids of different sizes, and can also be used for the step-by-step cutting of some circular hemorrhoids that are not suitable for one-circle cutting. ; And in the whole operation process, it is flexible and convenient. Therefore, the utility model expands the space for technical progress in this field, and is worthy of popularization.

Description

Surgical staple cutting device

technical field

The utility model relates to a surgical instrument, in particular to a surgical binding and cutting device, which belongs to the field of medical instruments.

Background technique

People have a history of more than 4,000 years of understanding of hemorrhoids. For a long time, theories about hemorrhoids have emerged in an endless stream. Since the 18th century, hemorrhoids were considered to be rich venous plexuses in the lower rectum or anal canal. If expansion or varicose in one or several places, it becomes hemorrhoids, that is, hemorrhoids are protruding veins, which are caused by various reasons. of vascular disease. Since the 1970s, breakthroughs have been made in the study of hemorrhoids, and the discoveries of anatomy, histology and physiology have endowed hemorrhoids with a modern concept. Thomson proposed for the first time in 1975 that hemorrhoids are a normal anatomical structure that everyone has. The lip-shaped warts or anal cushions at the lower end of the rectum, and the pathological hypertrophy of the anal cushions are hemorrhoids. This new concept is supported by famous scholars such as Alexander-Williams (1982), Bernstein (1983) and Melzier (1984). The new concept of hemorrhoids has been widely adopted in the newly published monographs of anorectal diseases abroad, and it has been gradually recognized in the field of anorectal surgery in my country in the past 10 years. The traditional methods of internal hemorrhoid treatment, including sclerosing agent injection, rubber band ligation and various forms of surgical excision, etc., are all aimed at the treatment of the hemorrhoid itself, aiming at shrinking or disappearing the hemorrhoid. Among the surgical procedures for hemorrhoidectomy, there is a method called PPH surgery, which is suprahemorrhoidal circumcision with the help of a round tubular stapling instrument. The principle is: under the condition of retaining the anal cushion tissue, the internal hemorrhoid and the hemorrhoidal mucosa and submucosal tissue are excised circularly for about 3-4 cm, and the two ends are anastomosed at the same time. The purpose of upward suspension and fixation is to restore the pathological anorectum to its normal anatomical state. The use of PPH surgery to treat severe hemorrhoids has the advantages of relieving postoperative pain, reducing postoperative bleeding, shortening hospital stay, speeding up the recovery cycle, not affecting daily life, and low recurrence rate. The entire operation process only takes 8-15 minutes, and the patient feels almost no pain after the operation. Since the root cause of hemorrhoids is solved during the operation, the short-term and long-term results are ideal. For some hemorrhoids that are difficult to treat with traditional treatments, such as mixed hemorrhoids, annular hemorrhoids, severe prolapsed hemorrhoids, prolapse of the anus, etc., PPH surgery also has a unique and good effect.

However, in practical application, it is found that some patients do not have three hemorrhoids at one time, but only one or two hemorrhoids. Then use the current round tube binding instrument to remove one circle at a time, regardless of whether all three hemorrhoids are onset. It will be completely resected, which obviously causes unnecessary damage to the patient and has no positive effect on postoperative recovery, which is not conducive to the clinical application of this surgical method.

Utility model content

The purpose of this utility model is to solve the above-mentioned technical problems, to provide a new type of surgical instrument for treating non-circular cut hemorrhoids, which has a simple structure and is easy to operate.

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

A surgical binding and cutting device, comprising: a housing, and a knob arranged at the tail of the housing, the knob is threadedly connected to a screw rod arranged inside the housing, the rotation of the knob can drive the screw rod to move axially along its axis, the The front end of the housing is fixedly provided with a nail barrel, and the nail barrel is provided with a relatively movable nail cartridge and an anvil, the nail anvil is fixed on the nail barrel, and the nail cartridge can be set on the screw rod The push block at the front end is driven and moves toward the nail anvil in a direction perpendicular to the axis of the screw mandrel.

Further, a spacer, a nail pusher and nails are arranged inside the staple cartridge, and the nail pusher can be driven by the spacer arranged at the rear end thereof. The cushion block has an opposite arc surface and a plane, the arc surface abuts against the nail pushing piece, and the plane abuts against the second slope surface of the push block. The nail pushing pieces are arranged in a divergent shape on the arc-shaped surface of the spacer.

Still further, the push block has two wedge-shaped slopes, the first slope abuts against the staple cartridge, and the second slope abuts against the spacer. The maximum distance from the first slope to the center of the push block is smaller than the maximum distance from the second slope to the center of the push block.

Furthermore, a spring is arranged between the staple cartridge and the staple anvil, and when the staple cartridge approaches the staple anvil, the spring is compressed. Both the staple cartridge and the staple anvil are provided with spring placement grooves.

Still further, a cutting knife is fixed on the pad, and a knife anvil is correspondingly arranged in the nail anvil. Both the cutting knife and the anvil are arc-shaped.

The beneficial effects of the utility model are mainly reflected in that it can effectively treat non-circular cut hemorrhoids, can complete the cutting of single or double hemorrhoids of different sizes, and can also be used for the step-by-step cutting of some circular hemorrhoids that are not suitable for one-circle cutting. ; And in the whole operation process, it is flexible and convenient. Therefore, the utility model expands space for technical progress in this field, and is worth popularizing.

Description of drawings

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

Figure 1: A schematic diagram of the surgical binding and cutting device of the present invention.

Figure 2: A cross-sectional view along the direction A-A in Figure 1.

Figure 3: Sectional view along B-B direction in Figure 1.

Figure 4: Sectional view along C-C direction in Figure 1.

in:

1 Shell 2 Knob 3 Screw

4 nail barrel 5 push block 51 first slope

52 second slope 6 nail anvil 7 knife anvil

8 spacer 81 curved surface 82 plane

9 Nail push piece 10 Nail bin 11 Nails

12 Spring 13 Cutter

D Distance from the first slope to the center L Distance from the second slope to the center

Detailed ways

The utility model discloses a surgical binding and cutting device for treating non-circular cut hemorrhoids. As shown in Figure 1, it is similar to the circular tubular staplers currently on the market, and includes a shell 1 and a knob arranged at the tail of the shell. 2. The knob 2 is threadedly connected to the screw rod 3 arranged inside the shell 1, the rotary motion of the knob 2 can drive the screw rod 3 to move axially along its axis, the front end of the shell 1 is fixedly provided with a nail cylinder 4, The front end of the screw mandrel 3 is fixed with a push block 5 .

The nail barrel 4 is provided with a relatively movable nail bin 10 and an anvil 6, the nail anvil 6 is fixed on the nail barrel 4, and the nail bin 10 is provided with a spacer 8 and a nail pusher 9 and nail 11.

As shown in FIG. 4 , the push block 5 has two wedge-shaped slopes 51 , 52 , the first slope 51 abuts against the staple cartridge 10 , and the second slope 52 abuts against the cushion block 8 . The maximum distance D from the first slope 51 to the center of the push block 5 is smaller than the maximum distance L from the second slope 52 to the center of the push block 5 .

As shown in FIG. 2 , the pad 8 has an opposite arc-shaped surface 81 and a plane 82 , the arc-shaped surface 81 abuts against the nail push piece 9 , and the plane 82 is in contact with the second slope of the push block 5 . Face 52 abuts against each other. The nail pushing pieces 9 are arranged on the arc surface 81 of the spacer 8 in a diverging shape, and can be driven by the spacer 8 . A spring 12 is arranged between the staple cartridge 10 and the staple anvil 6, and when the staple cartridge 10 approaches the staple anvil 6, the spring 12 is compressed. Both the staple cartridge 10 and the staple anvil 6 are provided with spring placement grooves.

As shown in FIG. 3 , a cutter 13 is fixed on the spacer 8 , and a knife anvil 7 is correspondingly arranged in the nail anvil 6 . Both the cutting knife 13 and the anvil 7 are arc-shaped.

The installation and usage methods of this embodiment are introduced below.

First, the nail anvil 6 is installed on the instrument body, which can be fixed with the instrument body through a buckle connection, and then the knife anvil 7 is installed in the nail anvil 6 and placed close to the nail anvil. Nail push piece 9, nail 11 are installed in the nail bin 10 again, then nail bin 10 is installed on the body, the binding surface of nail bin 10 is opposite to the binding surface of nail anvil 6. Then the cutter 13 is fixedly installed on the pad 8, and the pad 8 is installed behind the nail bin 10, then the push block 5 is installed on the screw mandrel 3, so that it is fixedly connected with the screw mandrel 3, and the push block 5 is installed The slope faces the direction of the staple cartridge 10. Then the threaded mandrel 3 is passed through the top opening of the main body, so that the end with the threaded structure reaches the bottom end of the main body, and the threaded structure of the threaded mandrel is connected with the threaded groove on the inner wall of the knob 2, and finally the anvil 6 is connected with the staple cartridge A spring 12 is installed between 10, and in the initial state, the nail anvil 6 and the nail bin 10 are in a separated state under the elastic force of the spring 12, and at this moment, the installation of the instrument is completed.

When in use, the tissue is placed between the anvil 6 and the staple bin 10, and then the knob 2 on the housing 1 is rotated, the knob 2 drives the screw 3 to move axially, and the screw 3 drives the push block 5 to move in the direction of the knob 2 . As the push block 5 moves, the first slope 51 of the push block 5 pushes the staple cartridge 10 to move toward the anvil 6 in a direction perpendicular to the axis of the screw mandrel 3 , and the second slope 52 pushes the spacer 8 to do the same movement.

When the staple anvil 6 and the staple cartridge 10 clamp the tissue, the staple cartridge 10 does not move any more, but the nail pusher also moves under the push of the second slope 52 through the spacer 8, so that the staple 11 is driven out and cut at the same time. Knife 13 cuts tissue under the assistance of anvil 7 . Then the knob 2 is reversely rotated to make the push block 5 move in the opposite direction, thereby disengaging from the resisting staple cartridge 10, and the staple cartridge is away from the anvil 6 under the action of the spring 12, so that the instrument releases the tissue to complete the suturing and cutting.

In addition, the surgical binding and cutting device can be used for cutting and treating single hemorrhoids or double hemorrhoids, which reduces the damage to patients compared with the current method of cutting single hemorrhoids and double hemorrhoids in one circle.

The utility model still has multiple specific embodiments. All technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope of the utility model.

Claims (10)

1. A surgical binding and cutting device, comprising: a housing (1), and a knob (2) arranged at the tail of the housing, the knob (2) is threadedly connected with a screw mandrel (3) arranged inside the housing (1), and the knob The rotary motion of (2) can drive the screw mandrel (3) to move axially along its axis, and the front end of the housing (1) is fixedly provided with a nail barrel (4), which is characterized in that: the nail barrel (4) ) is provided with relatively movable nail bin (10) and nail anvil (6), the nail anvil (6) is fixed on the nail barrel (4), and the nail bin (10) can be set on the wire The push block (5) at the front end of the rod (3) drives and moves toward the nail anvil (6) along a direction perpendicular to the axis of the screw mandrel (3). 2. The surgical binding cutting device according to claim 1, characterized in that: a spacer (8), a nail pushing piece (9) and a nail (11) are arranged in the staple magazine (10), and the nail pushing The sheet (9) can be driven by a spacer (8) arranged at its rear end. 3. The surgical binding cutting device according to claim 2, characterized in that: the push block (5) has two wedge-shaped slopes (51, 52), the first slope (51) and the staple bin (10) Abutting, the second slope (52) abuts against the block (8). 4. The surgical binding cutting device according to claim 3, characterized in that: the maximum distance (D) from the first slope (51) to the center of the push block (5) is smaller than the distance (D) between the second slope (52) and the center of the push block (5). Maximum distance (L) between centers of blocks (5). 5. The surgical binding cutting device according to claim 4, characterized in that: the spacer (8) has opposite arcuate surfaces (81) and planes (82), and the arcuate surfaces (81) and The nail pushing pieces (9) are in contact with each other, and the plane (82) is in contact with the second slope (52) of the push block (5). 6 . The surgical binding cutting device according to claim 5 , characterized in that: the nail pushing pieces ( 9 ) are arranged on the arc-shaped surface ( 81 ) of the spacer ( 8 ) in a divergent shape. 7 . 7. The surgical binding cutting device according to claim 6, characterized in that: a spring (12) is arranged between the staple bin (10) and the nail anvil (6), and when the nail bin (10) moves toward the nail anvil ( 6) When approaching, the spring is compressed. 8. The surgical stapling and cutting device according to claim 7, characterized in that: the staple cartridge (10) and the staple anvil (6) are both provided with spring placement grooves. 9. The surgical binding cutting device according to claim 2, characterized in that: a cutting knife (13) is fixed on the pad (8), and a knife is correspondingly arranged in the anvil (6) anvil (7). 10. The surgical binding cutting device according to claim 9, characterized in that: both the cutting knife (13) and the knife anvil (7) are arranged in an arc shape.

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