Asymmetric gastrointestinal anastomat for small animals

Abstract

The small animal asymmetric gastrointestinal anastomat comprises an intestine supporting tube, an esophagus supporting tube and a protective cap, the intestine supporting tube is a soft tube, the esophagus supporting tube is a hard tube and is detachably connected with the intestine supporting tube, and the diameter of the end, close to the intestine supporting tube, of the esophagus supporting tube is the same as that of the intestine supporting tube; the protective cap is arranged at the end, away from the esophagus supporting tube, of the intestine supporting tube, and the end face of the end of the protective cap is a spherical face. According to the asymmetric gastrointestinal anastomat for the small animals, anastomosis of an intestinal tube and a stomach tube is facilitated, and meanwhile, the problems of anastomotic stoma obstruction and anastomotic stoma leakage caused by asymmetric sizes of the intestinal tube and the stomach tube are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of staplers, in particular to an asymmetric gastrointestinal stapler for small animals. Background Art

[0002] Mice and rats are small animal models commonly used in scientific research, among which gastrointestinal surgery is a common animal modeling procedure. Among them, gastrointestinal anastomosis surgery is one of the more difficult modeling methods. However, the staplers used for humans are not only expensive, but also have a huge size difference compared to the intestines and stomachs of mice, making it difficult to directly apply them to small animal surgery. Therefore, gastrointestinal anastomosis in small animals is currently mainly sutured manually.

[0003] However, manual suturing requires a high level of surgeon skills. The modeling effect is inconsistent due to the differences in the surgeon's operating skills, which has a great impact on the scientific research conclusions. Importantly, when performing gastrointestinal anastomosis, it is often encountered that the intestinal and stomach are connected to the anastomosis. Due to the asymmetry of the two ends of the intestine and stomach, direct manual suturing can easily cause anastomotic leakage and obstruction. Utility Model Content

[0004] In view of the deficiencies in the prior art, the technical problem to be solved by the utility model is to provide an asymmetric gastrointestinal anastomosis device for small animals, which facilitates the anastomosis of the intestine and stomach tube, and avoids the problems of anastomotic obstruction and anastomotic leakage caused by the asymmetry of the size of the intestinal tube and the stomach tube.

[0005] In order to achieve the above object, the utility model is implemented through the following technical solutions: an asymmetric gastrointestinal stapler for small animals, comprising:

[0006] Intestinal support tube, a soft tube,

[0007] The esophageal support tube is a hard tube, which is detachably connected to the intestinal support tube, and the diameter of the end of the esophageal support tube close to the intestinal support tube is the same as the diameter of the intestinal support tube;

[0008] A protective cap is arranged at the end of the intestinal support tube away from the esophageal support tube, and the end surface of the protective cap is a spherical surface.

[0009] Furthermore, the intestinal support tube is a hollow tube.

[0010] Furthermore, it also includes a protective outer skin, which covers the outside of the esophageal support tube.

[0011] Furthermore, the intestinal support tube is divided into a straight tube section and a diameter-reducing section, the straight tube section is connected to the esophageal support tube, the diameter-reducing section is connected to the straight tube section, and the diameter of the diameter-reducing section gradually decreases in the direction away from the support tube.

[0012] Furthermore, it also includes a connecting piece, which connects the straight tube section and the esophageal support tube and is used to connect the straight tube section and the esophageal support tube.

[0013] Furthermore, the connecting piece includes a fixing block and a V-shaped spring clip, the fixing block is embedded and fixed on the end of the straight tube section, the fixing block is provided with a T-shaped mounting hole on the end face facing the esophageal support tube, and the small end of the T-shaped mounting hole is located on the outside, there are two V-shaped spring clips, the two V-shaped spring clips are symmetrically arranged on the bottom end face of the esophageal support tube, the ends of the V-shaped spring clips are connected to the bottom end face of the esophageal support tube, the openings of the two V-shaped spring clips are arranged facing each other, and the V-shaped spring clip can be inserted into the T-shaped mounting hole and clamped in the large end of the T-shaped mounting hole.

[0014] Furthermore, the connecting piece also includes a limiting column, a limiting hole is opened on the fixing block, and the limiting column is arranged on the esophageal support tube. When the V-shaped spring piece is inserted into the large end of the V-shaped spring piece, the limiting column is inserted into the limiting hole.

[0015] Beneficial effects of the utility model:

[0016] When using the above-mentioned asymmetric gastrointestinal stapler for small animals, the protective cap is first inserted into the intestine, and then the esophageal support tube is inserted into the intestine. Subsequently, the esophageal support tube is connected to the esophageal support tube, and then the esophageal support tube is inserted into the esophagus. Since the diameter of the end of the esophageal support tube close to the intestinal support tube is the same as the diameter of the intestinal support tube, it can be ensured that the esophagus and the intestinal tube at the anastomosis are the same size, thereby greatly avoiding the occurrence of anastomotic obstruction and anastomotic leakage caused by size asymmetry at both ends of the anastomosis, thereby reducing the occurrence of postoperative complications and improving the success rate of gastrointestinal anastomosis surgery in small animals and the long-term survival quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation of the utility model, the following will briefly introduce the drawings required for use in the specific implementation. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0018] Figure 1 A schematic diagram of an asymmetric gastrointestinal stapler for small animals provided by one embodiment of the utility model;

[0019] Figure 2 for Figure 1 A schematic diagram showing a small animal asymmetric gastrointestinal stapler in which the esophageal support tube and the straight tube section are separated;

[0020] Reference numerals:

[0021] 100, intestinal support tube; 110, straight tube section; 120, reducing section; 200, esophageal support tube; 300, protective cap; 400, connector; 410, fixing block; 411, T-shaped mounting hole; 420, V-shaped spring piece; 430, limiting column. DETAILED DESCRIPTION

[0022] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0023] See also Figure 1 to Figure 2 The utility model provides an asymmetric gastrointestinal stapler for small animals, comprising an intestinal support tube 100, an esophageal support tube 200 and a protective cap 300.

[0024] Specifically, the intestinal support tube 100 is a soft tube. In specific implementation, the intestinal support tube 100 can be a soft tube and a silicone tube. The soft tube intestinal support tube 100 can support the intestine and facilitate the intestinal support tube 100 to adapt to the shape of the intestine and insert the intestinal support tube 100 into the intestine.

[0025] The esophageal support tube 200 is a hard tube, which is detachably connected to the intestinal support tube 100, and the diameter of the end of the esophageal support tube 200 close to the intestinal support tube 100 is the same as the diameter of the intestinal support tube 100. In a specific implementation, the esophageal support tube 200 can be a steel tube with a diameter of 0.6-0.8 mm.

[0026] The protective cap 300 is disposed at the end of the intestinal support tube 100 away from the esophageal support tube 200, and the end surface of the protective cap 300 is a spherical surface. The protective cap 300 can prevent the esophageal support tube 200 from damaging the intestinal wall during the insertion process of the intestinal tract.

[0027] When in use, the protective cap 300 is first inserted into the intestine, and then the esophageal support tube 200 is inserted into the intestine. Subsequently, the esophageal support tube 200 is connected to the esophageal support tube 200, and then the esophageal support tube 200 is inserted into the esophagus. Since the diameter of the end of the esophageal support tube 200 close to the intestinal support tube 100 is the same as the diameter of the intestinal support tube 100, it can ensure that the esophagus and the intestine at the anastomosis are the same size, thereby greatly avoiding the problems of anastomotic obstruction and anastomotic leakage caused by size asymmetry at both ends of the anastomosis, thereby reducing the occurrence of postoperative complications and improving the success rate of gastrointestinal anastomosis surgery in small animals and the long-term survival quality.

[0028] In this embodiment, the intestinal support tube 100 can be provided as a hollow tube. The hollow tube can improve flexibility. At the same time, a protective outer layer (not shown in the figure) can be covered on the outside of the esophageal support tube 200 to prevent the edge of the esophageal support tube 200 from scratching the esophagus.

[0029] As a preferred embodiment, the intestinal support tube 100 is divided into a straight tube section 110 and a diameter-reducing section 120. The straight tube section 110 is connected to the esophageal support tube 200, and the diameter-reducing section 120 is connected to the straight tube section 110. The diameter of the diameter-reducing section 120 gradually decreases in the direction away from the support tube. The size of the diameter-reducing section 120 gradually decreases, which facilitates the insertion of the intestinal support tube 100 into the intestine.

[0030] In addition, the stapler further includes a connector 400 , which connects the straight tube section 110 and the esophageal support tube 200 , and is used to conveniently connect the straight tube section 110 and the esophageal support tube 200 .

[0031] Specifically, the connecting member 400 includes a fixing block 410 and a V-shaped spring clip 420. The fixing block 410 is embedded and fixed on the end of the straight tube section 110, and a T-shaped mounting hole 411 is provided on the end surface of the fixing block 410 facing the esophageal support tube 200, and the small end of the T-shaped mounting hole 411 is located on the outside. There are two V-shaped spring clips 420, and the two V-shaped spring clips 420 are symmetrically arranged on the bottom end surface of the esophageal support tube 200. The ends of the V-shaped spring clip 420 are connected to the bottom end surface of the esophageal support tube 200, and the openings of the two V-shaped spring clips 420 are arranged facing each other. The V-shaped spring clip 420 can be inserted into the T-shaped mounting hole 411 and can be clamped in the large end of the T-shaped mounting hole 411.

[0032] When the intestinal support tube 100 and the esophageal support tube 200 need to be connected, the V-shaped spring clip 420 only needs to be inserted into the T-shaped mounting hole 411. When the V-shaped spring clip 420 is stuck in the large end of the T-shaped mounting hole 411, the connection between the intestinal support tube 100 and the esophageal support tube 200 is completed.

[0033] Furthermore, the connector 400 further includes a limiting post 430. A limiting hole is provided on the fixing block 410, and the limiting post 430 is disposed on the esophageal support tube 200. When the V-shaped spring piece 420 is inserted into the large end of the V-shaped spring piece 420, the limiting post 430 is inserted into the limiting hole.

[0034] The limiting column 430 can prevent the intestinal support tube 100 and the esophageal support tube 200 from rotating with each other, thereby affecting the anastomosis.

[0035] The use of the above-mentioned asymmetric gastrointestinal stapler, intestinal support tube 100 and esophageal support tube 200 for small animals can ensure that the esophagus and the intestinal tube at the anastomosis are the same size, thereby greatly avoiding the problems of anastomotic obstruction and anastomotic leakage caused by the size symmetry at both ends of the anastomosis, thereby reducing the occurrence of postoperative complications and improving the success rate of gastrointestinal anastomosis surgery in small animals and the long-term survival quality.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. An asymmetric gastrointestinal stapler for small animals, characterized in that: include: Intestinal support tube, a soft tube, The esophageal support tube is a hard tube, which is detachably connected to the intestinal support tube, and the diameter of the end of the esophageal support tube close to the intestinal support tube is the same as the diameter of the intestinal support tube; A protective cap is arranged at the end of the intestinal support tube away from the esophageal support tube, and the end surface of the protective cap is a spherical surface.

2. The asymmetric gastrointestinal stapler for small animals according to claim 1, characterized in that: The intestinal support tube is a hollow tube.

3. The asymmetric gastrointestinal stapler for small animals according to claim 1, characterized in that: Also included is a protective outer skin, which covers the outside of the esophageal support tube.

4. The asymmetric gastrointestinal stapler for small animals according to claim 1, characterized in that: The intestinal support tube is divided into a straight tube section and a diameter-reducing section, the straight tube section is connected to the esophageal support tube, the diameter-reducing section is connected to the straight tube section, and the diameter of the diameter-reducing section gradually decreases in the direction away from the support tube.

5. The asymmetric gastrointestinal stapler for small animals according to claim 4, characterized in that: It also includes a connecting piece, which connects the straight tube section and the esophageal support tube and is used to connect the straight tube section and the esophageal support tube.

6. The asymmetric gastrointestinal stapler for small animals according to claim 5, characterized in that: The connecting piece includes a fixing block and a V-shaped spring piece. The fixing block is embedded and fixed on the end of the straight tube section. The end surface of the fixing block facing the esophageal support tube is provided with a T-shaped mounting hole, and the small end of the T-shaped mounting hole is located on the outside. There are two V-shaped spring pieces, and the two V-shaped spring pieces are symmetrically arranged on the bottom end surface of the esophageal support tube. The ends of the V-shaped spring pieces are connected to the bottom end surface of the esophageal support tube, and the openings of the two V-shaped spring pieces are arranged facing each other. The V-shaped spring piece can be inserted into the T-shaped mounting hole and clamped in the large end of the T-shaped mounting hole.

7. The asymmetric gastrointestinal stapler for small animals according to claim 6, characterized in that: The connecting piece also includes a limiting column, a limiting hole is provided on the fixing block, and the limiting column is arranged on the esophageal support tube. When the V-shaped spring piece is inserted into the large end of the V-shaped spring piece, the limiting column is inserted into the limiting hole.

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