CN215129378U - Inclined tube type anastomat - Google Patents

Abstract

The utility model relates to an inclined plane cast anastomat, its main part is cast anastomat, the top surface that supports the bottom surface of nail seat and the nail storehouse of cast anastomat mutually supports and forms the identical face that is used for anastomotic tissue, identical face divide into and support the identical inclined plane of nail seat advancing direction vertically low level plane and high level plane and relative low level plane and high level plane slope, and the low level plane is connected with the lower on identical inclined plane, and the high level plane is connected with the highest point on identical inclined plane. The utility model effectively solves the technical defect that the nail forming reject ratio is greatly increased because the existing inclined plane anastomat is 11-1 point and 5-7 points of the existing inclined plane anastomat are straightened due to the missing of the nail pit. This makes the inclined plane anastomat capable of driving perfect B-shaped nail in any position like common tube type anastomosis. Meanwhile, the advantages of the prior inclined plane anastomosis are retained, and the obstruction and blockage of the intestinal canal are avoided.

Description

Inclined tube type anastomat

Technical Field

The invention relates to the utilization of medical equipment, in particular to an inclined plane tubular anastomat.

Background

At present, a disposable tubular anastomat is adopted in the digestive tract reconstruction surgery to suture the intestinal tubes to be connected. The working principle of the disposable tube-type anastomat is similar to that of a stapler. The disposable digestive tract anastomat is characterized by that two rows of mutually-staggered anastomotic nails which are circularly arranged are impacted on the tissue of digestive tract, and at the same time the tissue of its inner side is cut off by means of cutting knife, and said anastomat can be used for conveniently anastomosing tubular organ. When the stapler is in work, the staple pushing sheet pushes anastomosis staples out of the staple bin, the anastomosis staples are formed into a B shape under the action of the staple anvil guide groove, and then the cutting knife cuts off tissues after the staples to finish the anastomosis of the tissues.

The prior art has the defects and reasons that: the osculating component of the existing tubular anastomat is flat-headed, a circle of connection without an elastic ring is formed in an intestinal canal after anastomosis, tissues grow into the intestinal canal to form a whole circle of scabs, the intestinal canal is easy to be narrowed, and food or excrement is difficult to pass or even blocked. The secondary operation is needed, which brings great pain and economic burden to the patient. For this reason, surgeons have proposed the concept of a beveled tubular stapler as early as the 90's of the last century: the osculating component comprises a nail pushing seat and a nail cabin, wherein inclined planes which can be mutually matched are arranged on the nail pushing seat and the nail cabin, and an anastomotic nail and an annular knife which are parallel and level to the inclined planes are arranged in the nail cabin. The anastomotic surface of the inclined-plane tubular anastomat, which abuts against the nail seat and the nail bin, is an inclined plane, the sutured surface on the intestinal canal is also changed into an inclined shape after suturing, and each cross section in the radial direction of the intestinal canal nail is only provided with two scar points instead of a circle of scar, so that the elasticity of the original intestinal canal is ensured, and the obstruction and blockage of the intestinal canal are avoided. Although the bevel anastomat has obvious clinical advantages, the prior art has the following defects: as shown in fig. 1-5, the anastomotic surface is a slope, and the nail pits at the 11-1 point and the 5-7 point are incomplete, i.e., the nail pits are missing. The fact proves that: the nail pit defects of 11-1 point and 5-7 points greatly improve the nail forming reject ratio.

Disclosure of Invention

The invention relates to an inclined plane tubular anastomat, which mainly has 2 purposes;

purpose 1: the improved inclined surface anastomat can be improved aiming at the defect that the nail pits at the high position and the low position of the traditional inclined surface are missing, and the reject ratio of anastomosis is reduced while the advantages of the inclined surface anastomat are kept.

Purpose 2: the improved nail pushing seat and the improved nail bin are ensured to be rapidly and correctly butted, and the installation efficiency of the nail pushing seat is improved.

The invention is realized by the following technical scheme: the main body of the inclined-plane tubular anastomat is a tubular anastomat, the bottom surface of a nail abutting seat of the tubular anastomat and the top surface of a nail bin are matched with each other to form an anastomosis surface for anastomosing tissues, the anastomosis surface comprises a low-level plane and a high-level plane which are perpendicular to the advancing direction of the nail abutting seat and an anastomosis inclined plane which is inclined relative to the low-level plane and the high-level plane, the low-level plane is connected with the lowest part of the anastomosis inclined plane, and the high-level plane is connected with the highest part of the anastomosis inclined plane.

Compared with the prior art, the invention has the beneficial effects that:

1. the technical defect that the nail forming defective rate is greatly increased due to the fact that nail pit missing is conducted at 11-1 point and 5-7 points of the existing inclined plane anastomat is effectively overcome. This makes the inclined plane anastomat capable of driving perfect B-shaped nail in any position like common tube type anastomosis. Meanwhile, the advantages of the prior inclined plane anastomosis are retained, and the obstruction and blockage of the intestinal canal are avoided.

2. The guide structure is added, so that the nail abutting seat can be perfectly guided and positioned at the correct position of the nail bin assembly. The doctor need not manual adjustment and supports the nail seat position when the operation, this just saves operation time, reduces the operation mistake.

Drawings

FIG. 1 is a schematic structural diagram of a conventional oblique stapler;

FIG. 2 is a schematic view of a nail pit of the nail seat;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is an enlarged view at B in FIG. 3;

FIG. 5 is a perspective view of the nail seat;

FIG. 6 is a schematic structural view of the oblique stapler of the present invention;

FIG. 7 is a schematic view of a nail pit of the nail seat;

FIG. 8 is a cross-sectional view taken along line D-D of FIG. 2;

FIG. 9 is an enlarged view at E in FIG. 3;

FIG. 10 is a perspective view of the nail seat;

fig. 11 is a schematic view of the overall structure of the present invention;

FIG. 12 is a schematic structural diagram of a pilot structure;

FIG. 13 is a schematic view of the positioning shaft and circlip of FIG. 12;

FIG. 14 is a schematic view of the positioning shaft and the circlip tube of FIG. 13 after being combined;

fig. 15 is a projection view of the anastomosis surface.

Description of reference numerals: the nail pushing device comprises a nail pushing seat 1, a nail bin 2, a positioning shaft 3, a snap spring tube 4, a nail pit 5, an adjusting nut 6, a limiting groove 8-1, a limiting protrusion 8-2, an upper guiding inclined plane 8-3, an annular convex edge 8-4, a low-level plane 9-1, a high-level plane 9-2 and an inosculating inclined plane 9-3.

Detailed Description

The invention is described in detail below with reference to the following description of the drawings:

as shown in fig. 6-11: inclined plane tubular anastomat, its main part is tubular anastomat, tubular anastomat support the bottom surface of nail seat 1 and the top surface of nail storehouse 2 mutually support and form the identical face that is used for anastomosing tissue, its characterized in that: the anastomosis surface is divided into a low-level plane 9-1 and a high-level plane 9-2 which are vertical to the advancing direction of the nail pushing seat 1 and an anastomosis inclined plane 9-3 which is inclined relative to the low-level plane 9-1 and the high-level plane 9-2, the low-level plane 9-1 is connected with the lowest part of the anastomosis inclined plane 9-3, and the high-level plane 9-2 is connected with the highest part of the anastomosis inclined plane 9-3.

It should be noted that the structures and operation principles of the nail pushing seat 1, the nail bin 2 and the like in the anastomat are the same as those of the existing tubular anastomat, and the shape of an anastomosis surface is mainly adjusted; from fig. 10, it can be seen that compared to the prior beveled mating surface, the highest and lowest beveled surfaces are flat surfaces rather than beveled surfaces, and this design ensures the integrity of the nail pit 5 in the area around 11-1 and 5-7 points of the mating surface, as shown in fig. 8 and 9. Experiments prove that the complete nail pit can ensure that the titanium nails on the whole anastomotic surface can be in a perfect B shape after anastomosis is completed. The suture surface on the intestinal canal is also changed into an inclined shape after the final anastomosis (suture) is finished, and each cross section in the radial direction of the intestinal canal nail is only provided with two scar points instead of a circle of scar, thereby ensuring the elasticity of the original intestinal canal and avoiding the obstruction and blockage of the intestinal canal.

Wherein, the included angle between the inosculation inclined plane 9-3 and the advancing direction of the nail pushing seat 1 is 50-70 degrees. Generally, 65 ° is preferred.

As shown in fig. 2 and 15: the projection of the anastomotic surface is annular, and an included angle alpha between a connecting line of two intersection points of the projection of the low-level plane 9-1 and the projection of the anastomotic inclined plane 9-3 and the circle center is 60-90 degrees; an included angle beta between a connecting line of two intersection points of the projection of the high-level plane 9-2 and the projection of the inosculating inclined plane 9-3 and the circle center is 60-90 degrees. The angle is preferably 60 ° (i.e., positions of 11, 13, 7, and 5 points in fig. 2).

As shown in fig. 12-14: and a guide structure for guiding the axial angle between the nail abutting seat 1 and the nail bin 2 is arranged on the clamp spring pipe 4 connected with the bottom of the nail abutting seat 1 and the positioning shaft 3 in the nail bin 2.

The guide structure is a limiting groove 8-1 arranged on the side wall of the bottom of the clamp spring tube 4 and a limiting protrusion 8-2 arranged on the side wall of the positioning shaft 3 and matched with the limiting groove 8-1.

The guide structure further comprises an upper guide inclined plane 8-3 arranged at the bottom of the circlip tube 4 and an annular convex edge 8-4 annularly arranged on the peripheral side wall of the positioning shaft 3, and the inclination of the upper surface of the annular convex edge 8-4 is matched with the upper guide inclined plane 8-3; the limiting groove 8-1 is formed in the uppermost end of the upper guiding inclined plane 8-3, and the limiting protrusion 8-2 is located at the uppermost end of the annular convex edge 8-4.

As shown in fig. 12-14, in order to ensure that the bottom surface of the nail abutting seat 1 and the top surface of the nail bin 2 can be correspondingly matched with each other, a limiting groove 8-1 and a limiting protrusion 8-2 which is arranged on the side wall of the positioning shaft 3 and is matched with the limiting groove 8-1 are formed on the side wall of the bottom of the circlip tube 4. When the limiting groove 8-1 and the limiting protrusion 8-2 are aligned, the clamp spring tube is connected with the positioning shaft 3, so that the bottom surface of the nail abutting seat 1 and the nail bin 2 can be attached to each other, and a required anastomotic surface is formed.

An upper guide inclined surface 8-3 and an annular convex edge 8-4 with inclination; the axial direction of the nail pushing seat 1 can be further guided, and when the limiting groove 8-1 and the limiting protrusion 8-2 are aligned, the bottom surface of the nail pushing seat 1 and the top surface of the nail bin 2 are aligned synchronously.

The working mode is as follows:

the disposable tubular anastomat is used in the digestive tract operation, and the disposable tubular anastomat is taken out firstly, and the protective cover of the nail bin is detached. The disposable tube-type anastomat is arranged in the organ to be anastomosed until the nail abutting seat part is completely exposed. The adjusting nut 6 at the rear part of the instrument is rotated anticlockwise, so that the gap between the nail abutting seat and the nail bin is increased, and the gap is large enough to accommodate two broken ends of an anastomotic part. The purse string at one end of the nail bin is tightened, and meanwhile, the purse string is bound on the puncture connecting shaft with moderate force. Then the purse wire at one end of the positioning shaft is tightened, and the purse wire is bound on the positioning shaft with moderate force. And rotating the tail adjusting nut clockwise to enable tissues at two ends to be close until the indication reaches a green area of the indication plate. The safety button is opened, the movable handle is gripped tightly to be excited, and when the movable handle has crisp click sound and obvious breakthrough feeling, the percussion is finished. And rotating the adjusting nut anticlockwise, and slowly drawing out the disposable tubular anastomat outwards.

While the invention has been illustrated and described with respect to specific embodiments and alternatives thereof, it will be understood that various changes and modifications can be made without departing from the spirit and scope of the invention. It is understood, therefore, that the invention is not to be in any way limited except by the appended claims and their equivalents.

Claims (6)

1. Inclined plane tubular anastomat, its main part is tubular anastomat, tubular anastomat support the bottom surface of nail seat (1) and the top surface of nail storehouse (2) to mutually support and form the identical anastomotic face that is used for anastomosing the tissue, its characterized in that: the anastomotic surface is divided into a low-level plane (9-1) and a high-level plane (9-2) which are vertical to the advancing direction of the nail abutting seat (1) and an anastomotic inclined plane (9-3) which is inclined relative to the low-level plane (9-1) and the high-level plane (9-2), the low-level plane (9-1) is connected with the lowest part of the anastomotic inclined plane (9-3), and the high-level plane (9-2) is connected with the highest part of the anastomotic inclined plane (9-3).

2. The bevel tube-type stapler of claim 1, wherein: the included angle between the inosculating inclined plane 9-3 and the advancing direction of the nail abutting seat (1) is 50-70 degrees.

3. The bevel tube-type stapler of claim 1, wherein: the projection of the anastomotic surface is annular, and an included angle alpha between a connecting line of two intersection points of the projection of the low-level plane (9-1) and the projection of the anastomotic inclined plane (9-3) and the circle center is 60-90 degrees; an included angle beta between a connecting line of two intersection points of the projection of the high-level plane (9-2) and the projection of the inosculating inclined plane (9-3) and the circle center is 60-90 degrees.

4. The bevel tube-type anastomat of any one of claims 1 to 3, wherein: and a guide structure for guiding the axial angle between the nail abutting seat (1) and the nail bin (2) is arranged on a clamp spring tube (4) connected with the bottom of the nail abutting seat (1) and a positioning shaft (3) in the nail bin (2).

5. The bevel tube-type stapler of claim 4, wherein: the guide structure is a limiting groove (8-1) formed in the side wall of the bottom of the clamp spring tube (4) and a limiting protrusion (8-2) arranged on the side wall of the positioning shaft (3) and matched with the limiting groove (8-1).

6. The bevel tube-type stapler of claim 5, wherein: the guide structure further comprises an upper guide inclined plane (8-3) arranged at the bottom of the circlip pipe (4) and an annular convex edge (8-4) annularly arranged on the peripheral side wall of the positioning shaft (3), and the inclination of the upper surface of the annular convex edge (8-4) is matched with the upper guide inclined plane (8-3); the limiting groove (8-1) is arranged at the uppermost end of the upper guide inclined plane (8-3), and the limiting protrusion (8-2) is positioned at the uppermost end of the annular convex edge (8-4).

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