CN103519859A

CN103519859A - Gastrointestinal tract anastomat

Info

Publication number: CN103519859A
Application number: CN201310514851.3A
Authority: CN
Inventors: 徐刚毅; 张晓蕾; 张洁; 裴明黎; 郑海菁; 王利群; 涂克华
Original assignee: HANGZHOU MEDZONE BIO-TECHNOLOGY Co Ltd
Current assignee: Hangzhou Mingshan Biotechnology Co Ltd
Priority date: 2013-10-25
Filing date: 2013-10-25
Publication date: 2014-01-22
Anticipated expiration: 2033-10-25
Also published as: CN103519859B

Abstract

The invention discloses a gastrointestinal tract anastomat which comprises an inner ring assembly and an outer ring assembly. The inner ring assembly and the outer ring assembly are made of biodegradable materials and are slidably connected with each other, the inner ring assembly comprises a hemispherical inner ring shell, a through hole is formed in the bottom of the inner ring shell, the outer ring assembly comprises a hemispherical outer ring shell and an outer barrel, a through hole is formed in the bottom of the outer ring shell, the outer barrel is connected with the outer ring shell, and the inner ring assembly is provided with at least two 'omega'-shaped arc sheets which are uniformly distributed along arc edges of the through hole of the inner ring shell at intervals; the bottoms of the 'omega'-shaped arc sheets are connected with the inner ring shell, the tops of the 'omega'-shaped arc sheets are narrower than the bottoms of the 'omega'-shaped arc sheets, and the 'omega'-shaped arc sheets are inclined towards the outer side of the inner ring shell from bottom to top. The gastrointestinal tract anastomat has the advantages that the gastrointestinal tract anastomat is simple in structure, easy to manufacture and position and low in material consumption, the usage of the required biodegradable materials can be effectively saved, production processes can be simplified, and the production cost can be reduced.

Description

Gastrointestinal tract anastomat

Technical Field

The invention relates to a medical instrument, in particular to a stapler for gastrointestinal tract operation.

Background

Gastrointestinal anastomosis is one of the most common surgical operations, such as gastro-esophageal anastomosis, gastro-intestinal anastomosis, small intestine-esophageal anastomosis, intestine-intestine anastomosis, and anus-intestine anastomosis. In recent years, a decomposable anastomotic ring (BAR) prepared by biodegradable materials is widely applied to clinical operations, and an in-vivo degradable anastomotic sleeve prepared by biodegradable materials is also proposed in Chinese patent CN 1141913C. The anastomotic sleeve has the greatest advantages that complications such as anastomotic leakage, anastomotic stenosis and the like after the operation of a patient are greatly reduced, and after the wound of the patient is healed, the anastomotic sleeve can be discharged out of the body after being degraded and broken.

However, the anastomosis sleeves adopt the jogged design, and the jogged parts of the anastomat have slits which cannot be completely sealed; the existence of the slit may cause intestinal fluid to leak from the slit which cannot be completely sealed, thereby affecting the healing of the operation wound of the patient and even generating anastomotic leakage.

In order to solve the above problems, chinese patent CN201223418Y provides a non-absorbable disintegrable anastomosis clip for gastrointestinal anastomosis surgery, which can effectively prevent leakage after anastomosis, but has the disadvantages of complex structure, complex production process and more biodegradable materials. In addition, the gastrointestinal stapler to which this patent application relates may also be made of similar biodegradable materials, and the portion of biodegradable material is not of importance to the claimed patent application, and thus, one skilled in the art, upon reading this patent, may refer to this prior art, which is incorporated herein by reference in its entirety as part of the disclosure of this application.

Disclosure of Invention

The technical problem underlying the present invention is to provide a gastrointestinal stapler that reduces or avoids the aforementioned problems.

Specifically, the invention provides a gastrointestinal tract anastomat which comprises an inner ring assembly and an outer ring assembly which are made of biodegradable materials and can be connected in a sliding mode, wherein the inner ring assembly comprises a hemispherical inner ring shell with a through hole formed in the bottom surface, the outer ring assembly comprises a hemispherical outer ring shell with a through hole formed in the bottom surface and an outer cylinder connected with the outer ring shell, and the inner ring assembly is provided with at least two 'n' -shaped arc sheets which are distributed at intervals and evenly distributed along the arc edge of the through hole of the inner ring shell; the bottom of the 'n' -shaped arc sheet is connected with the inner ring shell, the width of the top of the 'n' -shaped arc sheet is smaller than that of the bottom of the 'n' -shaped arc sheet, and the 'n' -shaped arc sheet inclines to the outer side of the inner ring shell from the bottom to the top.

Preferably, the "several" arc-shaped pieces are hollow arc-shaped plate-shaped structures.

Preferably, the outer cylinder of the outer ring assembly is provided with a convex part corresponding to each 'several' arc sheet on the side far away from the outer ring shell; the inner ring shell is provided with a hollow groove at the joint of the 'n' -shaped arc sheet and the hollow part corresponding to the 'n' -shaped arc sheet; the joint of the two sides of the convex part and the bottom of the outer barrel is also provided with a shoulder which can be tightly combined with the inner ring shell on the two sides of the hollow groove.

Preferably, the inner side of the outer cylinder is provided with at least one buckle corresponding to the connecting part of each 'several' -shaped arc sheet.

Preferably, the inner side of the outer cylinder is provided with an assembling positioning buckle and two inosculating positioning buckles corresponding to each arc sheet.

Preferably, the width of the two inosculating positioning buckles is the same as the width of the hollow part of the 'several' arc sheets.

Preferably, the outer ring shell and the inner ring shell are both provided with a plurality of square through holes correspondingly.

Preferably, the gastrointestinal tract anastomat further comprises a handle assembly made of biodegradable materials, the handle assembly comprises a handle body, a handle positioning clamp movably connected with the handle body is arranged at the front end of the handle body, the handle positioning clamp is two protrusions arranged side by side, the width between the two protrusions is just wide, the assembling positioning buckle can pass through the width, and the handle positioning clamp can be clamped at the position of the connecting portion of the inner ring assembly.

Preferably, two guide ribs are arranged on the inner side of the outer cylinder corresponding to each 'several' arc piece.

Preferably, a plurality of prefabricated crushing grooves are uniformly arranged on the periphery of the inner ring shell of the inner ring assembly and the outer ring shell of the outer ring assembly.

The gastrointestinal tract anastomat provided by the invention has the advantages of simple structure, easiness in manufacturing and positioning and less material consumption, can effectively save the consumption of biodegradable materials required to be used, simplifies the production process and reduces the production cost.

Drawings

The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein,

FIG. 1 is a schematic diagram illustrating the use of a GI tract stapler according to an embodiment of the present invention;

FIG. 2 is a schematic view of the gastrointestinal tract stapler of FIG. 1 in an exploded state;

FIG. 3 is a perspective view of the inner ring assembly of FIG. 2;

FIG. 4 is a schematic top view of the inner ring assembly of FIG. 3;

figure 5 shows a perspective view of the outer ring assembly of figure 2;

figure 6 is a bottom view of the outer ring assembly of figure 5.

Detailed Description

In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings. Wherein like parts are given like reference numerals.

The invention relates to a medical instrument, in particular to a anastomat for gastrointestinal tract operation, in particular to an anastomat similar to a non-absorbent disintegrable anastomosis clip for gastrointestinal tract anastomosis operation disclosed in CN201223418Y, belonging to an improvement on the prior art. The working principle, materials and the like of the anastomat related to the patent of the invention are similar to those of the prior art, so the application is incorporated into the prior art by reference in its entirety, and the similar parts of the operation principle and the like are not described in detail.

FIG. 1 is a schematic diagram illustrating the use of a GI tract stapler according to an embodiment of the present invention; fig. 2 is a schematic exploded view of the gastrointestinal tract stapler of fig. 1.

Referring to fig. 1-2, the present invention provides a gastrointestinal tract stapler, similar to the above-described prior art, comprising an inner ring member 1 and an outer ring member 2, both made of biodegradable material, slidably connected. In addition, a handle assembly 3 (described further below) is shown in fig. 1, which is used to assist in the rapid positioning and assembly of the inner and outer ring assemblies 1, 2 during surgery, and the handle assembly 3 is not necessarily inserted into the human body, so that the handle assembly 3 may be made of biodegradable material or common medical plastics.

The inner ring component 1 comprises a hemispherical inner ring shell 11 with a through hole in the bottom surface, the outer ring component 2 comprises a hemispherical outer ring shell 21 with a through hole in the bottom surface and an outer cylinder 22 connected with the outer ring shell 21, first circular arc-shaped sawteeth 111 are arranged at the top of the inner ring shell 11, and second circular arc-shaped sawteeth 211 matched with the first circular arc-shaped sawteeth 111 are arranged at the top of the outer ring shell 21.

Compared with the prior art, the significant difference is that the inner ring component 1 is provided with at least two 'n' -shaped arc sheets 12 which are distributed at intervals and evenly distributed along the arc edge of the through hole of the inner ring shell 11, and the 'n' -shaped arc sheets 12 can be sleeved in the outer cylinder 22 and are in sliding connection with the outer cylinder 22, as shown in fig. 2 and 3.

The 'n' -shaped arc sheet 12 is of a hollow arc-shaped plate-shaped structure, so that the requirement on the quantity of materials during manufacturing is greatly reduced on the basis of ensuring the connection strength of the inner ring component 1 and the outer ring component 2. For convenience of manufacture and positioning, three or four arc-shaped pieces 12 are preferably arranged on the inner ring component 1.

In addition, the 'n' -shaped arc piece 12 is adopted, the 'n' -shaped hollow part 121 of the 'n' -shaped arc piece can reduce materials, and on the other hand, the 'n' -shaped arc piece 12 and a hollow groove 13 (see fig. 3, which will be described later) formed by the arc edge of the through hole of the inner ring shell 11 can also be used for clamping and positioning the outer ring component 2, so that the hidden danger of anastomotic leakage hole due to the fact that the gastrointestinal tract tissue is pinched by too tight distance between the inner ring component 1 and the outer ring component 2 when the inner ring component 1 and the outer ring component 2 are buckled and occluded is avoided. Furthermore, the connecting portion 122 of the "several" arc 12 can also be formed to be locked with the outer ring component 2. It can be said that the "several" circular arc piece 12 of the inner ring assembly 1 of the present invention has triple functions compared with the prior art, that is, the inner ring assembly 1 of the prior art needs to be provided with three different structures respectively aiming at the three functions, and the present invention adopts one structure to have the functions of the three structures of the prior art, and has outstanding substantive features and significant progress.

FIG. 3 is a perspective view of the inner ring assembly of FIG. 2; FIG. 4 is a schematic top view of the inner ring assembly of FIG. 3; referring to fig. 3 to 4, in a specific embodiment, the bottom of the "several" arc 12 is connected to the inner ring housing 11, the top width is smaller than the bottom width, and the "several" arc 12 is inclined from the bottom to the top toward the outside of the inner ring housing 11. On one hand, the 'n' -shaped circular arc pieces 12 are convenient to insert into the outer cylinder 22, on the other hand, the inclined 'n' -shaped circular arc pieces 12 can have good elasticity, so that the 'n' -shaped circular arc pieces 12 are favorably extruded and attached to the outer cylinder 22, and shaking generated after the inner ring component 1 and the outer ring component 2 are assembled is avoided.

Figure 5 shows a perspective view of the outer ring assembly of figure 2; figure 6 is a bottom view of the outer ring assembly of figure 5. Referring to fig. 5 and 6, in a preferred embodiment, a fitting positioning buckle 23 and two inosculating positioning buckles 24 are arranged on the inner side of the outer cylinder 22 corresponding to each arc-shaped piece 12. The assembly positioning buckle 23 and the anastomosis positioning buckle 24 are arranged in a triangle shape along the inner wall of the outer cylinder 22 from one side of the outer ring shell 21, and the width of the two anastomosis positioning buckles 24 can be the same as the width of the hollow part of the 'n' -shaped circular arc piece 12, so that after the anastomat is anastomosed, the anastomosis positioning buckle 24 can firmly fix the 'n' -shaped circular arc piece 12.

The assembly positioning buckles 23 are used for clamping and positioning the connecting part 122 of the inner ring component 1 during initial assembly, and because only one assembly positioning buckle 23 is arranged, the positioning is only simple and is not completely clamped. After the anastomat is completely positioned and assembled, the inner ring component 1 and the outer ring component 2 are fastened by force, the two anastomosis positioning buckles 24 just clamp the connecting part 122 of the inner ring component 1, and therefore after the anastomat is anastomosed, the anastomosis positioning buckles 24 can stably fix the 'n' -shaped arc sheet 12.

Referring to fig. 1, 3 and 4, in another embodiment, the gastrointestinal tract anastomat further comprises a handle assembly 3, wherein the handle assembly 3 comprises a handle body 31, a handle positioning clip 32 movably connected with the handle body 31 is arranged at the front end of the handle body 31, and unlike the prior art, the handle positioning clip 32 is two protrusions arranged side by side, and the width between the two protrusions is just wide enough for the assembling positioning clip 23 to pass through. In operation, the handle assembly 3 passes through the through hole of the inner ring assembly 1, and then the handle positioning clip 32 is clipped at the connecting part 122 of the inner ring assembly 1 through pressing operation. Therefore, a handle positioning hole is not required to be specially designed on the inner ring component 1 aiming at the handle positioning clamp 32, and the design and production process requirements of the inner ring component 1 are greatly simplified.

In another embodiment, as shown in fig. 3-6, preferably, two guiding ribs 25 are provided inside the outer cylinder 22 corresponding to each "several" arc piece 12. Through the clamping and positioning of the guide ribs 25 on the two sides, the 'n' -shaped circular arc piece 12 can be inserted into the outer cylinder 22 more conveniently and quickly.

In a preferred embodiment, the outer cylinder 22 is provided with a convex portion 26 corresponding to each of the "several" circular arc pieces 12 on the side away from the outer ring housing 21, and the inner ring housing 11 is provided with a hollow groove 13 corresponding to the hollow portion of the "several" circular arc pieces 12 at the junction with the "several" circular arc pieces 12. During the matching process of the inner ring component 1 and the outer ring component 2, the convex part 26 can be inserted into the hollow groove 13 along the arc piece 12, which can facilitate the assembly positioning of the inner ring component 1 and the outer ring component 2.

In addition, in a preferred embodiment, a shoulder 261 may be further disposed at the connection between both sides of the protruding portion 26 and the bottom of the outer cylinder 22, so that after the protruding portion 26 is inserted into the hollow groove 13, the shoulder 261 on both sides of the protruding portion 26 can be tightly combined with the inner ring housing 11 on both sides of the hollow groove 13, thereby facilitating the tightness of the combination of the inner ring assembly 1 and the outer ring assembly 2.

In addition, the existing gastrointestinal tract anastomat prepared by adopting degradable materials is naturally degraded, namely, the gastrointestinal tract anastomat is degraded into fragments with uneven sizes in the degradation process, so that the degradation time and the degradation process of the whole gastrointestinal tract anastomat are not controllable, and if the fragments generated in the degradation process of the gastrointestinal tract anastomat are large, the fragments can be dissociated to other positions in the human body, and discomfort is brought to a patient. Thus, in a preferred embodiment, as shown in fig. 2, a plurality of pre-crushing grooves 41 are uniformly provided on the circumference of the inner ring casing 11 of the inner ring assembly 1 and the outer ring casing 21 of the outer ring assembly 2. The prefabricated crushing groove 41 is arranged for providing a prefabricated fragment structure, so that when the inner ring component 1 and the outer ring component 2 are degraded to the position of the prefabricated crushing groove 41 in the degradation process, the prefabricated crushing groove 41 is used as a boundary to be decomposed into a plurality of fragments with uniform sizes, and the human tissue absorption is facilitated.

It should be appreciated by those of skill in the art that while the present invention has been described in terms of several embodiments, not every embodiment includes only a single embodiment. The description is given for clearness of understanding only, and it is to be understood that all matters in the embodiments are to be interpreted as including technical equivalents which are related to the embodiments and which are combined with each other to illustrate the scope of the present invention.

The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent alterations, modifications and combinations can be made by those skilled in the art without departing from the spirit and principles of the invention.

Claims

1. A gastrointestinal tract anastomat comprises an inner ring assembly and an outer ring assembly which are made of biodegradable materials and can be connected in a sliding mode, wherein the inner ring assembly comprises a hemispherical inner ring shell with a through hole formed in the bottom surface, the outer ring assembly comprises a hemispherical outer ring shell with a through hole formed in the bottom surface and an outer cylinder connected with the outer ring shell, and the gastrointestinal tract anastomat is characterized in that the inner ring assembly is provided with at least two 'n' -shaped arc sheets which are distributed at intervals and evenly distributed along the arc edge of the through hole of the inner ring shell; the bottom of the 'n' -shaped arc sheet is connected with the inner ring shell, the width of the top of the 'n' -shaped arc sheet is smaller than that of the bottom of the 'n' -shaped arc sheet, and the 'n' -shaped arc sheet inclines to the outer side of the inner ring shell from the bottom to the top.

2. The gastrointestinal tract anastomat of claim 1, wherein the 'several' -shaped circular arc sheets are of a hollow circular arc plate-shaped structure.

3. The gastrointestinal tract anastomat of claims 1-2, wherein the outer cylinder of the outer ring assembly is provided with a convex part corresponding to each "several" circular arc piece at the side far away from the outer ring shell; the inner ring shell is provided with a hollow groove at the joint of the 'n' -shaped arc sheet and the hollow part corresponding to the 'n' -shaped arc sheet; the joint of the two sides of the convex part and the bottom of the outer barrel is also provided with a shoulder which can be tightly combined with the inner ring shell on the two sides of the hollow groove.

4. The gastrointestinal tract anastomat of any one of claims 1 to 3, wherein at least one buckle is arranged on the inner side of the outer cylinder corresponding to the connecting part of each arc-shaped sheet.

5. The gastrointestinal tract anastomat as claimed in claim 4, wherein, the inner side of the outer cylinder is provided with a fitting positioning buckle and two anastomosis positioning buckles corresponding to each 'several' arc-shaped sheet.

6. The gastrointestinal tract anastomat as claimed in claim 5, wherein the width of the two anastomosis positioning buckles is the same as the width of the hollow part of the 'several' circular arc sheets.

7. The gastrointestinal tract anastomat of claim 1, wherein a plurality of square through holes are correspondingly arranged on the outer ring shell and the inner ring shell.

8. The gastrointestinal tract anastomat of claim 1, further comprising a handle assembly made of biodegradable materials, wherein the handle assembly comprises a handle body, the front end of the handle body is provided with a handle positioning clip movably connected with the handle body, the handle positioning clip is two protrusions arranged side by side, the width between the two protrusions is just wide, so that the assembly positioning clip can pass through the two protrusions, and the handle positioning clip can be clamped at the position of the connecting part of the inner ring assembly.

9. The gastrointestinal tract anastomat of any one of claims 1 to 8, wherein two guide ribs are arranged on the inner side of the outer cylinder corresponding to each arc-shaped sheet.

10. The gastrointestinal tract anastomat of any one of claims 1 to 9, wherein a plurality of pre-made crushing grooves are uniformly arranged on the periphery of the inner ring housing of the inner ring assembly and the outer ring housing of the outer ring assembly.