Intestinal anastomotic stoma protection device and use method thereof

Abstract

The invention discloses an intestinal anastomotic stoma protection device and a use method thereof, belongs to the technical field of medical instruments, and solves the problems that in the prior art, an air bag can slide out of a supporting tube in the use process, and the supporting tube cannot be synchronously disintegrated. The device comprises a support tube fixed in an intestinal tract at the front end of an anastomotic stoma, a blocking mechanism arranged in the support tube and used for blocking the circulation of intestinal content and preventing the intestinal content from flowing through the inner wall of the support tube, and a limiting mechanism arranged on the inner wall of the support tube and used for preventing the blocking mechanism from sliding, the disintegration mechanisms are respectively arranged at two ends of the supporting pipe and are used for synchronously disintegrating the supporting pipe and the limiting mechanism. The limiting mechanism is arranged on the inner wall of the supporting tube, the limiting mechanism abuts against one end of the blocking mechanism, the blocking mechanism is prevented from slipping off in the using process, and the situation that contents are left in the intestinal tract through the anastomotic stoma and the supporting tube to be disintegrated automatically is avoided, the disintegration mechanism is arranged on the supporting tube, and the disintegration mechanism can facilitate synchronous disintegration of other parts of the protection device.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular relates to an intestinal anastomosis protection device and a use method thereof. Background Art

[0002] The incidence of anastomotic leakage varies depending on the location of the anastomosis, the method of anastomosis, the technique, the patient's underlying disease, etc., among which the incidence of anastomotic leakage after rectal surgery can be as high as about 20%. Therefore, during the recovery of the anastomosis, in order to prevent the intestinal contents from adversely affecting the recovery of the anastomosis, the flow direction of the intestinal contents needs to be intervened. The traditional method uses enterostomy to divert the intestinal contents. An opening is made in the patient's abdominal wall, and a section of the intestine is dragged out of the abdominal wall. The intestinal tube is cut and fixed to complete the enterostomy, so that the intestinal contents flow out from the opening of the abdominal wall, thereby achieving the purpose of protecting the distal intestinal anastomosis. However, after the intestinal anastomosis is restored, this method requires a second operation to suture the intestinal tube at the stoma and put it back into the abdominal cavity, which not only increases the patient's pain, but also greatly consumes medical resources.

[0003] In the traditional method, the coordinated use of the stent and the drainage tube can drain the intestinal contents while protecting the anastomosis. When in use, the drainage tube is axially passed through the hollow cavity of the stent. The user completes the sealing of the inner cavity wall of the stent by reasonably adjusting the amount of liquid and gas in the balloon tightly fixed on the drainage tube. However, during intestinal activity and the discharge of intestinal contents, the drainage tube may be pressed and slip out of the stent cavity. After that, the stent directly contacts the intestinal contents over a large area, accidentally accelerating the stent disintegration process, causing the unhealed anastomosis to directly contact the intestinal contents, causing serious consequences such as intestinal leakage. Therefore, in order to prevent premature slippage, the inner and outer proximal axial ends of the stent are respectively designed with "convex ridge" structures that hinder the sliding of the balloon relative to the stent and the stent relative to the intestinal cavity. Because the two ends of the stent will inevitably contact the intestinal contents or intestinal fluid, such contact will accelerate the disintegration of the two ends of the stent. At the same time, due to the convex ridges 14 at both ends of the stent, the equivalent thickness of the middle part of the stent is increased, resulting in the inability of the convex ridges to disintegrate synchronously with the stent (such as Figure 6 This can lead to uncontrollable disease and even endanger the patient's life. Summary of the invention

[0004] The present invention provides an intestinal anastomotic stoma protection device and a use method thereof, so as to at least solve some of the above-mentioned technical problems.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows: An intestinal anastomosis protection device comprises a support tube fixed in the intestine at the front end of the anastomosis, a blocking mechanism arranged in the support tube for blocking the flow of intestinal contents and preventing the intestinal contents from flowing through the inner wall of the support tube, a limiting mechanism arranged on the inner wall of the support tube for preventing the blocking mechanism from sliding, and a disintegration mechanism respectively arranged at both ends of the support tube for synchronously disintegrating the support tube and the limiting mechanism.

[0006] Furthermore, the limiting mechanism includes a limiting ring plate which is arranged on the inner wall of the support tube and contacts the end of the blocking mechanism.

[0007] Furthermore, an acute angle is formed between the outer wall of the limiting ring plate and the inner wall of the support tube.

[0008] Furthermore, the disintegration mechanism comprises a plurality of disintegration grooves evenly distributed on the support tube, wherein the disintegration groove at one end of the support tube passes through the limiting mechanism and divides the limiting mechanism into a plurality of parts.

[0009] Furthermore, an arc-shaped boss located between two adjacent disintegration grooves is provided on the outer wall of the support tube.

[0010] Furthermore, a threading hole is respectively provided at both ends of the support tube.

[0011] Furthermore, the blocking mechanism includes a diversion tube disposed in the support tube and extending from the anus along the intestine to the outside of the body for draining the intestinal contents to the outside of the body, an air bag disposed on the outer wall of the diversion tube and tightly fitting with the limiting mechanism after expansion, and a medium delivery tube disposed in the diversion tube, one end of which is connected to the air bag and the other end of which is connected to an external medium delivery mechanism.

[0012] Furthermore, a hemispherical plug is provided on the guide tube, and an intestinal content inlet connected with the guide tube for the intestinal content to pass through is opened on the plug; the intestinal content inlet is located upstream of the support tube.

[0013] Furthermore, the support tube and the limiting mechanism are made of polycaprolactone.

[0014] A method for using an intestinal anastomotic protection device comprises the following steps: S1. Place the support tube in the intestine at the front end of the anastomosis; S2. Use sutures to pass through the threading holes at both ends of the support tube to suture and fix the support tube in the intestine; S3, connecting one end of the medium delivery pipe in the guide pipe to the air bag, and the other end to the external medium delivery mechanism; S4, insert the airbag into the support tube; S5. Open the medium inlet and outlet valve on the medium delivery pipe, and the external medium delivery mechanism delivers the medium to the airbag through the medium delivery pipe, so that the airbag expands. After the airbag expands, the outer wall of the airbag is tightly attached to the support tube wall, and one end of the airbag is in contact with the limit ring plate; S6. After the airbag is inflated, the external conveying mechanism and the medium inlet and outlet valves are closed, and the connection between the external conveying mechanism and the conveying mechanism is disconnected; S7. After the anastomosis is restored, the medium inlet and outlet valves are opened to release the medium in the balloon to shrink the balloon, and the balloon and the drainage tube in the intestine are withdrawn from the anus to the outside of the body, and the support tube is left in the intestine to degrade by itself; S8. When the support tube collapses, the support tube, the limiting ring plate and the arc-shaped boss collapse synchronously because the support tube is provided with a collapse groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The invention has a simple structure, a scientific and reasonable design, and is easy to use. The support tube of the invention is fixed in the intestine at the front end of the anastomosis, and the blocking mechanism is arranged in the support tube. The blocking mechanism blocks the intestinal contents at the front end of the support tube, and at the same time, the contents blocked at the front end of the support tube are drained out of the body through the blocking mechanism, so as to avoid the intestinal contents passing through the anastomosis, protect the intestinal anastomosis, be beneficial to the recovery of the anastomosis, reduce the incidence of anastomotic complications, and will not affect the patency of the intestine itself. After the intestinal anastomosis is recovered, the blocking mechanism is pulled out of the intestinal cavity through the anus, so as to facilitate the recovery of the intestinal anastomosis. The limiting mechanism is arranged inside the support tube. When the outer wall of the blocking mechanism is sealed with the inner wall of the support tube, one end of the blocking mechanism is tightly pressed against the limiting mechanism, so as to avoid the blocking mechanism from slipping out of the support tube during use, thereby reducing the risk of intestinal contents passing through the anastomosis.

[0016] The support tube of the present invention remains in the intestine and degrades by itself. Since disintegration mechanisms are provided at both ends of the support tube, the disintegration mechanisms can cause the support tube and the limiting mechanism to disintegrate synchronously, thereby reducing the risk of inconsistent disintegration speeds of the support tube and the limiting mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention.

[0018] Figure 2 It is a cross-sectional view of the present invention.

[0019] Figure 3 Schematic diagram of the support tube of the present invention.

[0020] Figure 4 It is a cross-sectional view of the flow guide tube of the present invention.

[0021] Figure 5 It is a schematic diagram of the disintegration of the support tube of the present invention.

[0022] Figure 6 This is a schematic diagram of the disintegration of the present invention without a disintegration mechanism.

[0023] The names corresponding to the reference numerals are: 1. Support tube; 3. Limiting ring plate; 4. Disintegration groove; 5. Arc boss; 7. Threading hole; 8. Guide tube; 9. Air bag; 10. Medium conveying tube; 11. Plug; 12. Intestinal contents inlet; 13. Medium inlet and outlet valve; 14. Convex ridge. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore they cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; of course, it can also be a mechanical connection or an electrical connection; in addition, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] like Figure 1-Figure 5 As shown, the present invention provides an intestinal anastomosis protection device, comprising a support tube 1 fixed in the intestine at the front end of the anastomosis, a blocking mechanism arranged in the support tube 1 for blocking the flow of intestinal contents and preventing the intestinal contents from flowing through the inner wall of the support tube 1, a limiting mechanism arranged on the inner wall of the support tube 1 for preventing the blocking mechanism from sliding, and a disintegration mechanism respectively arranged at both ends of the support tube 1 for synchronous disintegration of the support tube 1 and the limiting mechanism.

[0028] The support tube 1 of the present invention is fixed in the intestine at the front end of the anastomosis, and the blocking mechanism is arranged in the support tube 1. The blocking mechanism blocks the intestinal contents at the front end of the support tube 1, and at the same time, the contents blocked at the front end of the support tube 1 are drained out of the body through the blocking mechanism, so as to avoid the intestinal contents passing through the anastomosis, protect the intestinal anastomosis, facilitate the recovery of the anastomosis, reduce the incidence of anastomotic complications, and will not affect the patency of the intestine itself. After the intestinal anastomosis is recovered, the blocking mechanism is pulled out of the intestinal cavity through the anus, so as to facilitate the recovery of the intestinal anastomosis. The limiting mechanism is arranged inside the support tube 1. When the outer wall of the blocking mechanism is sealed with the inner wall of the support tube 1, one end of the blocking mechanism is tightly pressed against the limiting mechanism, so as to avoid the blocking mechanism from slipping off the support tube 1 during use, thereby reducing the risk of the intestinal contents passing through the anastomosis. After the anastomosis is recovered, the support tube 1 remains in the intestine and degrades by itself. Since disintegration mechanisms are arranged at both ends of the support tube 1, the disintegration mechanisms can make the support tube 1 and the limiting mechanism disintegrate synchronously, thereby reducing the risk of inconsistent disintegration speeds of the support tube 1 and the limiting mechanism.

[0029] like Figure 1-Figure 5 As shown, the present invention provides an intestinal anastomosis protection device, comprising a support tube 1 fixed in the intestine at the front end of the anastomosis, a blocking mechanism arranged in the support tube 1 for blocking the flow of intestinal contents and preventing the intestinal contents from flowing through the inner wall of the support tube 1, a limiting mechanism arranged on the inner wall of the support tube 1 for preventing the blocking mechanism from sliding, and a disintegration mechanism respectively arranged at both ends of the support tube 1 for synchronous disintegration of the support tube 1 and the limiting mechanism.

[0030] The limiting mechanism comprises a limiting ring plate 3 which is arranged on the inner wall of the support tube 1 and contacts with the end of the blocking mechanism.

[0031] This embodiment 2 provides a more preferred structure of the limiting mechanism on the basis of embodiment 1, specifically: the limiting mechanism includes a limiting ring plate 3 provided on the inner wall of the support tube 1 and in contact with the end of the blocking mechanism.

[0032] The limiting ring plate 3 of the present invention is arranged on the inner wall of the support tube 1, and the limiting ring plate 3 and the support tube 1 are an integrated structure. When in use, after the blocking mechanism is expanded, the outer wall of the blocking mechanism and the inner wall of the support tube 1 are tightly sealed, and at the same time, one end of the blocking mechanism contacts the end of the limiting ring plate 3, so that the limiting ring plate 3 limits the blocking mechanism, preventing the blocking mechanism from slipping out of the support tube 1 during use, thereby preventing intestinal contents from passing through the anastomosis.

[0033] like Figure 1-Figure 5As shown, the present invention provides an intestinal anastomosis protection device, comprising a support tube 1 fixed in the intestine at the front end of the anastomosis, a blocking mechanism arranged in the support tube 1 for blocking the flow of intestinal contents and preventing the intestinal contents from flowing through the inner wall of the support tube 1, a limiting mechanism arranged on the inner wall of the support tube 1 for preventing the blocking mechanism from sliding, and a disintegration mechanism respectively arranged at both ends of the support tube 1 for synchronous disintegration of the support tube 1 and the limiting mechanism.

[0034] The limiting mechanism comprises a limiting ring plate 3 which is arranged on the inner wall of the support tube 1 and contacts with the end of the blocking mechanism.

[0035] An acute angle is formed between the outer wall of the limiting ring plate 3 and the inner wall of the supporting tube 1 .

[0036] Based on Example 2, Example 3 provides a more preferred structure of the limiting ring plate 3 , specifically: an acute angle is formed between the outer wall of the limiting ring plate 3 and the inner wall of the support tube 1 .

[0037] The outer wall of the limiting ring plate 3 of the present invention forms an acute angle with the inner wall of the support tube 1, which can effectively reduce the thickness of the limiting ring plate 3 and facilitate the synchronous disintegration of the limiting ring plate 3 and the support tube 1. At the same time, when the blocking mechanism is placed in the support tube 1, the limiting ring plate 3 can also guide the blocking mechanism, thereby facilitating the placement of the blocking mechanism in the support tube 1.

[0038] like Figure 1-Figure 5 As shown, the present invention provides an intestinal anastomosis protection device, comprising a support tube 1 fixed in the intestine at the front end of the anastomosis, a blocking mechanism arranged in the support tube 1 for blocking the flow of intestinal contents and preventing the intestinal contents from flowing through the inner wall of the support tube 1, a limiting mechanism arranged on the inner wall of the support tube 1 for preventing the blocking mechanism from sliding, and a disintegration mechanism respectively arranged at both ends of the support tube 1 for synchronous disintegration of the support tube 1 and the limiting mechanism.

[0039] The disintegration mechanism comprises a plurality of disintegration grooves 4 evenly distributed on the support tube 1, wherein the disintegration groove 4 at one end of the support tube 1 passes through the limiting mechanism and divides the limiting mechanism into a plurality of parts.

[0040] This embodiment 4 provides a more preferred structure of the disintegration mechanism based on embodiment 1, specifically: the disintegration mechanism includes a plurality of disintegration grooves 4 evenly distributed on the support tube 1, wherein the disintegration groove 4 at one end of the support tube 1 passes through the limiting mechanism and divides the limiting mechanism into several parts.

[0041] The present invention preferably has six disintegration grooves 4, which are evenly distributed on the support tube 1, and the disintegration groove 4 on one end of the support tube 1 is penetrated by the limiting ring plate 3, thereby dividing the limiting ring plate 3 into six parts, so that the limiting ring plate 3 can disintegrate synchronously with the support tube 1. When the support tube 1 is retained in the intestine, the support tube 1 disintegrates with the passage of time. Since the disintegration grooves 4 are distributed on the support tube 1 and the limiting ring plate 3, the support tube 1 and the limiting ring plate 3 can disintegrate synchronously.

[0042] like Figure 1-Figure 5 As shown, the present invention provides an intestinal anastomosis protection device, comprising a support tube 1 fixed in the intestine at the front end of the anastomosis, a blocking mechanism arranged in the support tube 1 for blocking the flow of intestinal contents and preventing the intestinal contents from flowing through the inner wall of the support tube 1, a limiting mechanism arranged on the inner wall of the support tube 1 for preventing the blocking mechanism from sliding, and a disintegration mechanism respectively arranged at both ends of the support tube 1 for synchronous disintegration of the support tube 1 and the limiting mechanism.

[0043] The disintegration mechanism comprises a plurality of disintegration grooves 4 evenly distributed on the support tube 1, wherein the disintegration groove 4 at one end of the support tube 1 penetrates the limiting mechanism and divides the limiting mechanism into a plurality of parts.

[0044] An arc-shaped boss 5 located between two adjacent disintegration grooves 4 is provided on the outer wall of the support tube 1 .

[0045] This embodiment 5 provides a more preferred structure of the support tube 1 based on the embodiment 4, specifically: an arc-shaped boss 5 located between two adjacent disintegration grooves 4 is provided on the outer wall of the support tube 1.

[0046] The arcuate boss 5 of the present invention is arranged on the outer wall of the support tube 1, and the arcuate boss 5 is located between two adjacent disintegration grooves 4. The arcuate boss 5 prevents the intestinal tube from slipping on the outer wall of the support tube 1 during suturing and fixing the intestinal tube, thereby facilitating fixation of the intestinal tube. At the same time, the arcuate boss 5 is located between two adjacent disintegration grooves 4, so that the arcuate boss 5 can disintegrate synchronously with the support tube 1 during the disintegration process.

[0047] like Figure 1-Figure 5 As shown, the present invention provides an intestinal anastomosis protection device, comprising a support tube 1 fixed in the intestine at the front end of the anastomosis, a blocking mechanism arranged in the support tube 1 for blocking the flow of intestinal contents and preventing the intestinal contents from flowing through the inner wall of the support tube 1, a limiting mechanism arranged on the inner wall of the support tube 1 for preventing the blocking mechanism from sliding, and a disintegration mechanism respectively arranged at both ends of the support tube 1 for synchronous disintegration of the support tube 1 and the limiting mechanism.

[0048] A threading hole 7 is respectively provided at both ends of the support tube 1 .

[0049] This embodiment 6 provides a more preferred structure of the support tube 1 based on the embodiment 1, specifically: a threading hole 7 is provided at each end of the support tube 1.

[0050] The support tube 1 of the present invention is respectively provided with a threading hole 7 at both ends. When in use, the support tube 1 covers the intestinal tube at the proximal end of the anastomosis on the outer wall of the support tube 1, and sutures are passed through the threading holes 7 at both ends of the support tube 1 to suture and fix the intestinal tube covered on the outer wall of the support tube 1, so that the support tube 1 is fixed in the intestinal cavity, thereby facilitating suture and fixation of the intestinal tube.

[0051] like Figure 1-Figure 5 As shown, the present invention provides an intestinal anastomosis protection device, comprising a support tube 1 fixed in the intestine at the front end of the anastomosis, a blocking mechanism arranged in the support tube 1 for blocking the flow of intestinal contents and preventing the intestinal contents from flowing through the inner wall of the support tube 1, a limiting mechanism arranged on the inner wall of the support tube 1 for preventing the blocking mechanism from sliding, and a disintegration mechanism respectively arranged at both ends of the support tube 1 for synchronous disintegration of the support tube 1 and the limiting mechanism.

[0052] The blocking mechanism includes a diversion tube 8 which is arranged in the support tube 1 and extends out of the anus along the intestine to drain the intestinal contents to the outside of the body, an air bag 9 which is arranged on the outer wall of the diversion tube 8 and fits tightly with the limiting mechanism after expansion, and a medium delivery tube 10 which is arranged in the diversion tube 8 and is connected to the air bag 9 at one end and connected to an external medium delivery mechanism at the other end.

[0053] Based on Example 1, this Example 7 provides a more preferred structure of the blocking mechanism, specifically: the blocking mechanism includes a diversion tube 8 arranged in the support tube 1 and extending from the anus along the intestine to the outside of the body for draining the intestinal contents to the outside of the body, an air bag 9 arranged on the outer wall of the diversion tube 8 and tightly fitting with the limiting mechanism after expansion, and a medium delivery tube 10 arranged in the diversion tube 8, one end of which is connected to the air bag 9 and the other end is connected to the external medium delivery mechanism.

[0054] The drainage tube 8 of the present invention is placed in the support tube 1, and the drainage tube 8 extends out of the body from the anus along the intestine. The drainage tube 8 can drain the intestinal contents to the outside of the body, thereby preventing the intestinal contents from passing through the anastomosis. The airbag 9 is arranged on the drainage tube 8. After the airbag 9 is inflated, the outer wall of the airbag 9 is tightly sealed against the inner wall of the support tube 1, and one end of the airbag 9 is in contact with the end of the limiting ring plate 3 to prevent the airbag 9 from slipping out of the drainage tube 8 during use, thereby preventing the unhealed anastomosis from directly contacting the intestinal contents and reducing the risk of anastomotic infection. The medium delivery tube 10 is arranged in the drainage tube 8, and the medium delivery tube 10 is arranged in the drainage tube 8. One end of the tube 10 is connected to the airbag, and the other end is connected to the external medium delivery mechanism. During use, the external medium delivery mechanism delivers the medium to the airbag 9 through the medium delivery tube 10, so that the airbag 9 expands. After the airbag 9 expands, the outer wall of the airbag 9 and the inner wall of the support tube 1 are tightly sealed to prevent intestinal contents from passing through the anastomosis, thereby facilitating the healing of the anastomosis. When the anastomosis is healed, the external medium delivery mechanism sucks out the medium in the airbag 9, causing the airbag 9 to shrink, and the airbag and the diversion tube in the intestine are pulled out of the body from the anus, thereby facilitating the removal of the blocking mechanism from the intestine.

[0055] The medium delivery pipe 10 of the present invention is provided with a medium inlet and outlet valve 13, which delivers the medium into the airbag 9 and also allows the medium to stay in the airbag 9, so that the airbag 9 remains in an expanded state.

[0056] The flow guide tube 8 of the present invention is provided with a medium inlet and outlet connected to the medium delivery tube 10 , and the medium inlet and outlet can facilitate the connection between the medium delivery tube 10 and the airbag 9 .

[0057] like Figure 1-Figure 5 As shown, the present invention provides an intestinal anastomosis protection device, comprising a support tube 1 fixed in the intestine at the front end of the anastomosis, a blocking mechanism arranged in the support tube 1 for blocking the flow of intestinal contents and preventing the intestinal contents from flowing through the inner wall of the support tube 1, a limiting mechanism arranged on the inner wall of the support tube 1 for preventing the blocking mechanism from sliding, and a disintegration mechanism respectively arranged at both ends of the support tube 1 for synchronous disintegration of the support tube 1 and the limiting mechanism.

[0058] The blocking mechanism includes a diversion tube 8 which is arranged in the support tube 1 and extends out of the anus along the intestine to drain the intestinal contents to the outside of the body, an air bag 9 which is arranged on the outer wall of the diversion tube 8 and fits tightly with the limiting mechanism after expansion, and a medium delivery tube 10 which is arranged in the diversion tube 8 and is connected to the air bag 9 at one end and connected to an external medium delivery mechanism at the other end.

[0059] The flow guiding tube 8 is provided with a hemispherical plug 11 , and the plug 11 is provided with an intestinal content inlet 12 which is connected with the flow guiding tube 8 and is used for the intestinal content to pass through; the intestinal content inlet 12 is located upstream of the supporting tube 1 .

[0060] Based on Example 7, this Example 8 provides a more preferred structure of the guide tube 8, specifically: the guide tube 8 is provided with a hemispherical plug 11, and the plug 11 is provided with an intestinal content inlet 12 connected to the guide tube 8 for the passage of intestinal contents; the intestinal content inlet 12 is located upstream of the support tube 1.

[0061] The drainage tube 8 of the present invention is provided with a hemispherical plug 11. The hemispherical plug 11 can prevent the drainage tube 8 from causing damage to the intestinal wall when the drainage tube 8 is inserted or removed. The intestinal content inlet 12 is arranged on the plug 11. The intestinal content inlet 12 is connected to the drainage tube 8, and the intestinal content inlet 12 is located upstream of the support tube 1. When in use, the intestinal content inlet 12 can facilitate the drainage of the intestinal contents, thereby facilitating the intestinal contents to enter the drainage tube 8 through the intestinal content inlet 12, so that the intestinal contents are drained out of the body through the drainage tube 8.

[0062] The plug 11 and the flow guide tube 8 of the present invention are an integrated structure.

[0063] like Figure 1-Figure 5 As shown, the present invention provides an intestinal anastomosis protection device, comprising a support tube 1 fixed in the intestine at the front end of the anastomosis, a blocking mechanism arranged in the support tube 1 for blocking the flow of intestinal contents and preventing the intestinal contents from flowing through the inner wall of the support tube 1, a limiting mechanism arranged on the inner wall of the support tube 1 for preventing the blocking mechanism from sliding, and a disintegration mechanism respectively arranged at both ends of the support tube 1 for synchronous disintegration of the support tube 1 and the limiting mechanism.

[0064] The support tube 1 and the limiting mechanism are made of polycaprolactone.

[0065] This embodiment 9 provides a more preferred structure of the support tube 1 and the limiting mechanism based on the embodiment 1, specifically: the support tube 1 and the limiting mechanism are made of polycaprolactone.

[0066] The support tube 1 and the limiting mechanism of the present invention are made of polycaprolactone. Specifically, the support tube 1 and the limiting ring plate 3 are made of polycaprolactone, which is a biodegradable material that can be degraded and absorbed by the human body. After the anastomosis is restored, the support tube 1 and the limiting ring plate 3 remain in the intestine and degrade by themselves.

[0067] The medium transported by the medium transport mechanism of the present invention is a fluid, preferably water.

[0068] The polycaprolactone used in the present invention is an existing material and can be directly purchased and used on the market.

[0069] A method for using an intestinal anastomotic protection device comprises the following steps: S1. Place the support tube in the intestine at the front end of the anastomosis; S2. Use sutures to pass through the threading holes at both ends of the support tube to suture and fix the support tube in the intestine; S3, connecting one end of the medium delivery pipe in the guide pipe to the air bag, and the other end to the external medium delivery mechanism; S4, insert the airbag into the support tube; S5. Open the medium inlet and outlet valve on the medium delivery pipe, and the external medium delivery mechanism delivers the medium to the airbag through the medium delivery pipe, so that the airbag expands. After the airbag expands, the outer wall of the airbag is tightly attached to the support tube wall, and one end of the airbag is in contact with the limit ring plate; S6. After the airbag is inflated, the external conveying mechanism and the medium inlet and outlet valves are closed, and the connection between the external conveying mechanism and the conveying mechanism is disconnected; S7. After the anastomosis is restored, the medium inlet and outlet valves are opened to release the medium in the balloon to shrink the balloon, and the balloon and the drainage tube in the intestine are withdrawn from the anus to the outside of the body, and the support tube is left in the intestine to degrade by itself; S8. When the support tube collapses, the support tube, the limiting ring plate and the arc-shaped boss collapse synchronously because the support tube is provided with a collapse groove.

[0070] The medium conveying mechanism, suture and medium inlet and outlet valve 13 used in the present invention are existing technologies and can be directly purchased and used on the market. Therefore, the structure, circuit and principle of the medium conveying mechanism, suture and medium inlet and outlet valve 13 are not described in detail here.

[0071] Finally, it should be noted that the above embodiments are only preferred embodiments of the present invention to illustrate the technical solutions of the present invention, rather than limiting them, and certainly not limiting the patent scope of the present invention. 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 recorded in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention. In other words, any changes or modifications made to the main design concept and spirit of the present invention that have no substantive significance, and the technical problems they solve are still consistent with the present invention, should be included in the protection scope of the present invention. In addition, the direct or indirect application of the technical solutions of the present invention in other related technical fields is also included in the patent protection scope of the present invention.

Claims

1. An intestinal anastomosis protection device, characterized in that: It comprises a support tube (1) fixed in the intestinal tract at the front end of the anastomosis, a blocking mechanism arranged in the support tube (1) for blocking the flow of intestinal contents and preventing the intestinal contents from flowing through the inner wall of the support tube (1), a limiting mechanism arranged on the inner wall of the support tube (1) for preventing the blocking mechanism from sliding, and a disintegration mechanism respectively arranged at both ends of the support tube (1) for synchronously disintegrating the support tube (1) and the limiting mechanism.

2. The intestinal anastomosis protection device according to claim 1, characterized in that: The limiting mechanism comprises a limiting ring plate (3) arranged on the inner wall of the support tube (1).

3. The intestinal anastomosis protection device according to claim 2, characterized in that: An acute angle is formed between the outer wall of the limiting ring plate (3) and the inner wall of the support tube (1).

4. The intestinal anastomosis protection device according to claim 1, characterized in that: The disintegration mechanism comprises a plurality of disintegration grooves (4) evenly distributed on the support tube (1), wherein the disintegration groove (4) at one end of the support tube (1) passes through the limiting mechanism and divides the limiting mechanism into a plurality of parts.

5. The intestinal anastomosis protection device according to claim 1, characterized in that: An arc-shaped boss (5) is provided on the outer wall of the support tube (1) and is located between two adjacent disintegration grooves (4).

6. The intestinal anastomosis protection device according to claim 1, characterized in that: A threading hole (7) is respectively provided at both ends of the support tube (1).

7. The intestinal anastomosis protection device according to claim 1, characterized in that: The blocking mechanism comprises a drainage tube (8) arranged in the support tube (1) and extending out of the body from the anus along the intestine for draining intestinal contents to the outside of the body, an air bag (9) arranged on the outer wall of the drainage tube (8) and tightly fitted with the limiting mechanism after expansion, and a medium delivery tube (10) arranged in the drainage tube (8) with one end connected to the air bag (9) and the other end connected to an external medium delivery mechanism.

8. The intestinal anastomosis protection device according to claim 7, characterized in that: A hemispherical plug (11) is provided on the flow guide tube (8), and an intestinal content inlet (12) connected to the flow guide tube (8) and used for intestinal contents to pass through is provided on the plug (11); the intestinal content inlet (12) is located upstream of the support tube (1).

9. The intestinal anastomosis protection device according to claim 1, characterized in that: The support tube (1) and the limiting mechanism are made of polycaprolactone.

10. A method for using an intestinal anastomotic protection device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Place the support tube in the intestine at the front end of the anastomosis; S2. Use sutures to pass through the threading holes at both ends of the support tube to suture and fix the support tube in the intestine; S3, connecting one end of the medium delivery pipe in the guide pipe to the air bag, and the other end to the external medium delivery mechanism; S4, insert the airbag into the support tube; S5. Open the medium inlet and outlet valve on the medium delivery pipe, and the external medium delivery mechanism delivers the medium to the airbag through the medium delivery pipe, so that the airbag expands. After the airbag expands, the outer wall of the airbag is tightly attached to the support tube wall, and one end of the airbag is in contact with the limit ring plate; S6. After the airbag is inflated, the external conveying mechanism and the medium inlet and outlet valves are closed, and the connection between the external conveying mechanism and the conveying mechanism is disconnected; S7. After the anastomosis is restored, the medium inlet and outlet valves are opened to release the medium in the balloon to shrink the balloon, and the balloon and the drainage tube in the intestine are withdrawn from the anus to the outside of the body, and the support tube is left in the intestine to degrade by itself; S8. When the support tube collapses, the support tube, the limiting ring plate and the arc-shaped boss collapse synchronously because the support tube is provided with a collapse groove.

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