A catheter for protecting stoma intestinal tube during operation

Abstract

The present invention relates to the field of medical devices and discloses a catheter for protecting a stoma intestinal tube during surgery. The catheter for protecting a stoma intestinal tube during surgery comprises a catheter body, a pouch, a valve and a butterfly-shaped fixator. The pouch is fixedly adhered to the catheter body and wrapped around the outer periphery of the catheter body. A butterfly-shaped fixator is fixedly provided on the outer wall of the proximal end of the catheter body. A valve is fixedly provided near the proximal end of the pouch near the butterfly fixator. The catheter is simple to operate, firmly fixed and can clearly display the course of the stoma intestinal tube, thereby reducing the risk of intestinal tube damage during surgery.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, in particular to a catheter used for protecting a stoma intestinal tube during surgery. Background Art

[0002] Parastomal hernia is one of the common complications after enterostomy surgery. Most PSH patients are asymptomatic and can be treated conservatively. However, due to worsening symptoms, difficulty in stoma care (leakage, discomfort), or emergency situations such as obstruction and incarceration, 11-70% of patients will eventually require at least one surgery. In patients with parastomal hernia, due to defects in the parastomal fascia, the intestine becomes entangled and adheres after entering the hernia sac. Therefore, during parastomal hernia repair, there is a risk of damaging the intestine when separating the adhesions of the intestine in the hernia sac. In addition, the stoma intestine and the embedded intestine are entangled with each other, making it difficult to distinguish during surgery, which brings difficulties and challenges to the surgery.

[0003] To prevent accidental bowel injury during surgery, clinicians currently employ several measures. The most commonly used is the Foley catheter. To use it, after sterilizing and draping, a sterile urinary catheter is inserted through the stoma into the bowel. Then, 15-20 ml of saline is injected into the balloon via the syringe port. During surgery, the presence of a stoma can be determined by observing the bowel bulge and by contact of the instrument with the bowel. However, this method has significant drawbacks: ① The amount of water injected into the Foley catheter balloon should not exceed 30 ml; otherwise, the balloon will rupture due to excessive internal pressure, making the bulge of the bowel difficult to observe. ② The largest Foley catheter is 24 French (8 mm in diameter). Furthermore, the tactile feel of laparoscopic instruments is significantly inferior to that of manual touch, making it difficult to feel the catheter within the bowel. ③ Foley catheters are difficult to secure and can slip during surgery due to intestinal peristalsis. Therefore, we have developed a catheter designed to protect the stoma during surgery. Summary of the Invention

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the present invention provides a catheter for protecting a stoma intestinal tube during surgery, which solves the above-mentioned problems.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solution: a catheter for protecting a stoma intestinal tube during surgery, comprising a catheter body, a pouch, a valve, and a butterfly-shaped retainer, wherein the pouch is fixedly adhered to the catheter body and wrapped around the outer periphery of the catheter body, the butterfly-shaped retainer is fixedly provided on the outer wall of the proximal end of the catheter body, and the valve is fixedly provided at the proximal end of the pouch near the butterfly retainer;

[0008] The catheter body is cylindrical in shape with a blunt end, 40-45 cm in length, 5-10 mm in diameter, and is made of medical siliconized latex.

[0009] The material of the pouch is a latex material with good elasticity and expandability. The end of the pouch is 2 cm away from the end of the catheter body, and the proximal end of the pouch is 5 cm away from the proximal end of the catheter body, and is connected to the valve diameter.

[0010] The valve is made of rubber or PVC, which is relatively hard;

[0011] The butterfly-shaped fixer is made of PVC.

[0012] The valve includes a silicone tube connected to the bag and a rubber cover for sealing the injection port on the silicone tube. Eight groups of fan-shaped deformable blades are fixedly connected to the inner wall of the port of the silicone tube. The eight groups of deformable blades form a circle with the same diameter end face of the silicone tube, and the vertices of the eight groups of deformable blades corresponding to the center of the circle are fitted together. The material of the deformable blades is deformable and bent rubber.

[0013] Preferably, the butterfly-shaped fixer includes a vertical plate and an elliptical fixing plate, and two groups of symmetrical vertical plates are fixedly installed on the outer wall of the catheter body near the proximal end, and the end surfaces of the two groups of vertical plates facing away from the catheter body are fixedly installed with elliptical fixing plates, and the two groups of elliptical fixing plates are symmetrical with respect to the catheter body, and microholes are opened near the edges of the two groups of elliptical fixing plates, and the diameter of the microholes is 2 mm.

[0014] Preferably, a semicircular tube wall extending to the end of the bladder is fixedly installed on the inner wall of the bladder corresponding to the valve connection hole, and the semicircular tube wall is made of rubber.

[0015] Preferably, the semicircular tube wall and the inner wall of the catheter body form a pipeline lumen, and the end of the semicircular tube wall corresponding to the bag connection valve is in a closed shape surrounding the connection hole, and the semicircular tube wall is set as a liquid outlet opening near the end of the bag.

[0016] Preferably, a plurality of groups of equally spaced auxiliary expansion rings are fixedly mounted on the outer wall of the area of ​​the catheter body corresponding to the area wrapped by the bag, and one group of auxiliary expansion rings is close to the end of the bag. The auxiliary expansion rings are composed of an integrated conical ring and a circular ring, and the small diameter of the conical ring faces the end of the catheter body, and the large diameter port of the conical ring is fixedly connected to the circular ring.

[0017] Preferably, the auxiliary expansion ring has multiple groups of through-type V-grooves at the ports corresponding to the circular rings, and the V-grooves extend to the midpoint of the conical ring. The outer walls of the corners of the auxiliary expansion ring corresponding to the V-grooves are all arc-shaped.

[0018] Preferably, annular grooves are provided on the outer wall of the catheter body close to the corresponding connection bags at both ends, and the bag walls at the ports where the bag is fixedly connected to the catheter body are embedded in the grooves.

[0019] (3) Beneficial effects

[0020] Compared with the prior art, the present invention provides a catheter for protecting the stoma intestinal tube during surgery, which has the following beneficial effects:

[0021] 1. This catheter is used to protect the stoma intestinal tube during surgery. The catheter body is solid and has a certain degree of softness and hardness, which makes it easy to insert into the coiled intestinal tube through the stoma and straighten the intestinal tube.

[0022] 2. The catheter used to protect the stoma intestinal tube during surgery has a bag made of latex material with good elasticity and expandability. The end of the bag is 2 cm away from the end of the catheter body, and the proximal end of the bag is 5 cm away from the proximal end of the catheter body. It is connected to the valve diameter. The bag almost wraps the entire catheter body. After injecting liquid or gas, it can form an expansion bag with uniform diameter, making the course of the intestinal tube visible, which is beneficial for the surgeon to observe the stoma intestinal tube under laparoscope.

[0023] 3. The butterfly-shaped fixator used for protecting the stoma intestinal tube during surgery includes a vertical plate and an elliptical fixing plate, and the two sets of elliptical fixing plates are symmetrical with respect to the catheter body. Both sets of elliptical fixing plates are provided with microholes near the edges, and the diameter of the microholes is 2 mm. The catheter can be fixed to the skin stoma body by stitches or film through the microholes to prevent the catheter from slipping outward.

[0024] 4. This catheter is used to protect the stoma intestinal tube during surgery. The valve is connected to the bag through a silicone tube. After the syringe head is inserted and a certain pressure is applied, liquid or gas can be injected into the bag. After the syringe is pulled out, the liquid or gas in the bag can be prevented from overflowing.

[0025] 5. The catheter used for protecting the stoma intestinal tube during surgery forms a pipeline lumen through the semicircular tube wall and the inner wall of the catheter body, and the end of the semicircular tube wall corresponding to the bag connection valve is in a closed shape surrounding the connection hole, and the semicircular tube wall is set as a liquid outlet opening near the end of the bag; the semicircular tube wall installed on the inner wall of the bag and the inner wall of the bag form a pipeline lumen with one end closed and the other end open. When liquid is injected into the bag, it first flows into the end of the bag through the pipeline lumen, and the bag inside the intestinal tube is first flushed and expanded, so that the intestinal tube expands and shows a more sufficient course, with a better effect.

[0026] 6. The catheter for protecting the stoma intestinal tube during surgery has multiple groups of equally spaced auxiliary expansion rings fixedly installed on the outer wall of the area of ​​the catheter body corresponding to the area wrapped by the bag, and one group of auxiliary expansion rings is close to the end of the bag. The auxiliary expansion ring is composed of an integrated conical ring and a circular ring, and the small diameter of the conical ring faces the end of the catheter body, and the large diameter port of the conical ring is fixedly connected to the circular ring. Multiple groups of through-type V-grooves are provided at the ports corresponding to the circular ring on the auxiliary expansion ring, and the V-grooves extend only to the midpoint of the conical ring. The outer walls of the corners of the auxiliary expansion ring corresponding to the V-grooves are all arc-shaped; through the arrangement of multiple groups of auxiliary expansion rings, when the bag is squeezed at the entrance, it will stick to the surface of the auxiliary expansion ring and expand through the support of the auxiliary expansion ring. At the same time, part of the bag will shrink into the V-grooves provided on the auxiliary expansion ring due to the squeezing, so that most of the bag enters the intestinal tube along the auxiliary expansion ring on the catheter body, reducing the accumulation of the bag at the proximal end.

[0027] 7. The catheter used for protecting the stoma intestinal tube during surgery has an annular groove on the outer wall of the catheter body near the corresponding connection bags at both ends. The bag walls at the ports where the bag is fixedly connected to the catheter body are embedded in the groove, and the thickness of the groove is consistent with the thickness of the bag wall. Therefore, by embedding the bag in the catheter body, the connection tightness between the bag and the catheter body can be increased, so that the bag and the catheter body are tightly adhered and leak-proof. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the present invention;

[0029] Figure 2 This is a schematic structural diagram of the butterfly-shaped fixator of the present invention;

[0030] Figure 3 Schematic diagram of the structure of the silicone tube of the present invention;

[0031] Figure 4 is a schematic cross-sectional view of the pouch of the present invention;

[0032] Figure 5 for Figure 4 A local enlarged schematic diagram of point A in FIG;

[0033] Figure 6 Schematic diagram of the main structure of the catheter of the present invention.

[0034] In the figure: 1. Catheter body; 2. Bag; 3. Valve; 4. Butterfly-shaped fixator; 5. Vertical plate; 6. Elliptical fixing plate; 7. Micropore; 8. Semicircular tube wall; 9. Auxiliary expansion ring; 10. Liquid outlet opening; 11. Conical ring; 12. Circular ring; 13. V-shaped groove; 14. Groove; 15. Rubber cover; 16. Silicone tube; 17. Deformable blade. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not 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 efforts are within the scope of protection of the present invention.

[0036] See also Figure 1-6 A catheter for protecting an intestinal stoma during surgery, comprising a catheter body 1, a pouch 2, a valve 3, and a butterfly-shaped retainer 4. The pouch 2 is fixedly adhered to the catheter body 1 and wrapped around the outer periphery of the catheter body 1. The butterfly-shaped retainer 4 is fixedly provided on the outer wall of the proximal end of the catheter body 1. The valve 3 is fixedly provided at the proximal end of the pouch 2 near the butterfly retainer 4.

[0037] The catheter body 1 is cylindrical in shape with a blunt end, 40-45 cm in length and 5-10 mm in diameter, and is made of medical siliconized latex, which has a certain degree of softness and hardness.

[0038] The material of the bag 2 is a latex material with good elasticity and expandability. The end of the bag 2 is 2 cm away from the end of the catheter body 1, and the proximal end of the bag 2 is 5 cm away from the proximal end of the catheter body 1. It is connected to the diameter of the valve 3. The bag 2 almost wraps the entire catheter body 1. After injecting liquid or gas, it can form an expansion bag with a uniform diameter, so that the course of the intestinal tract can be revealed, which is beneficial for the surgeon to observe the stoma intestinal tract under laparoscope.

[0039] The material of valve 3 is rubber or PVC, which is hard and convenient for inserting the syringe tip;

[0040] The material of the butterfly-shaped fixer 4 is PVC.

[0041] The valve 3 also includes a silicone tube 16 connected to the bag 2 and a rubber cover 15 for sealing the injection port on the silicone tube 16. Eight groups of fan-shaped deformable blades 17 are fixedly connected to the inner wall of the port of the silicone tube 16. The eight groups of deformable blades 17 form a circle with the same diameter end face of the silicone tube 16, and the vertices of the eight groups of deformable blades 17 corresponding to the center of the circle fit together. The material of the deformable blades 17 is deformable and bent rubber. When the syringe is inserted into the valve, the syringe will press against the multiple groups of deformable blades 17 to bend them downward to fit the inner wall of the silicone tube 16. After the injection is completed, a small amount of leakage will occur during the process of pulling out and sealing the rubber cover 15. At this time, when the syringe is pulled out, the eight groups of deformable blades 17 close upward and return to their original shape due to their own elasticity, which can reduce leakage in the process of sealing the rubber cover 15.

[0042] The butterfly-shaped fixator 4 includes a vertical plate 5 and an elliptical fixing plate 6. Two groups of symmetrical vertical plates 5 are fixedly installed on the outer wall of the catheter body 1 near the proximal end. The two groups of vertical plates 5 are fixedly installed on the end faces of the catheter body 1 away from the catheter body 1, and the two groups of elliptical fixing plates 6 are symmetrical with respect to the catheter body 1. Microholes 7 are opened near the edges of the two groups of elliptical fixing plates 6. The diameter of the microholes 7 is 2 mm. The catheter can be fixed to the skin stoma body by stitching or applying a film through the microholes 7 to prevent the catheter from slipping outward.

[0043] A semicircular tube wall 8 extending to the end of the bladder 2 is fixedly installed on the inner wall of the bladder 2 corresponding to the connection hole of the valve 3, and the semicircular tube wall 8 is made of rubber.

[0044] The semicircular tube wall 8 and the inner wall of the catheter body 1 form a pipeline lumen, and the end of the semicircular tube wall 8 corresponding to the bag 2 connected to the valve 3 is in a closed shape surrounding the connection hole, and the semicircular tube wall 8 is provided with a liquid outlet opening 10 near the end of the bag 2; during injection, the liquid will first fill the bag 2 at the proximal end of the catheter body 1, and it is difficult to enter the bag 2 in the intestinal tract, resulting in insufficient expansion of the bag 2 inside the intestinal tract. The semicircular tube wall 8 installed on the inner wall of the bag 2 forms a pipeline lumen with one end closed and the other end open. When the liquid is injected into the bag 2, it first flows into the end of the bag 2 through the pipeline lumen, first flushing and expanding the bag 2 inside the intestinal tract.

[0045] A plurality of groups of equally spaced auxiliary expansion rings 9 are fixedly installed on the outer wall of the area of ​​the catheter body 1 corresponding to the area wrapped by the pouch 2, and one group of auxiliary expansion rings 9 is close to the end of the pouch 2. The auxiliary expansion ring 9 is composed of an integrated conical ring 11 and a circular ring 12, and the small diameter of the conical ring 11 faces the end of the catheter body 1, and the large diameter port of the conical ring 11 is fixedly connected with the circular ring 12. A plurality of groups of through-type V-grooves 13 are provided at the ports corresponding to the circular ring 12 on the auxiliary expansion ring 9, and the V-grooves 13 extend only to the midpoint of the conical ring 11. The outer walls of the corners of the auxiliary expansion ring 9 corresponding to the V-grooves 13 are all arc-shaped; in the process of inserting the catheter body 1 wrapped with the pouch 2, the stoma and the intestinal The muscle groups at the tube will squeeze the loose bag 2 and because the bag 2 has expansion elasticity, the bag 2 will be squeezed by the muscle groups, making it difficult for most of the bag 2 to enter the intestinal tract along the catheter body 1, and will accumulate at the proximal end of the catheter body 1. Through the setting of multiple groups of auxiliary expansion rings 9, when the bag 2 is squeezed at the entrance, it will stick to the surface of the auxiliary expansion ring 9 and expand with the support of the auxiliary expansion ring 9. At the same time, part of the bag 2 will shrink into the V-shaped groove 13 opened on the auxiliary expansion ring 9 due to the squeezing, so that most of the bag 2 enters the intestinal tract along the auxiliary expansion ring 9 on the catheter body 1, reducing the accumulation of the bag 2 at the proximal end.

[0046] At the same time, when the catheter is not in use, the loose pouch 2 is compressed and collected into the V-shaped groove 13, which is convenient for storing the catheter.

[0047] An annular groove 14 is provided on the outer wall of the catheter body 1 near the corresponding connection bags 2 at both ends. The bag walls at the ports where the bag 2 is fixedly connected to the catheter body 1 are embedded in the groove 14, and the thickness of the groove 14 is consistent with the thickness of the bag wall of the bag 2. Therefore, by embedding the bag 2 in the catheter body 1, the tightness of the connection between the bag 2 and the catheter body 1 can be increased, so that the bag 2 and the catheter body 1 are tightly adhered and leak-proof.

[0048] Working principle: Before use, the surface of the catheter needs to be fully coated with paraffin oil, and the front end of the catheter is inserted into the intestinal tract from the stoma, and goes straight to the end. Liquid is injected into the bag 2 through the valve 3 to expand the bag 2, so that the intestinal tract expands and shows its movement. In the process of inserting the catheter body 1 wrapped with the bag 2, the muscle groups at the stoma and the intestinal tract will squeeze the loose bag 2 and because the bag 2 has expansion elasticity, the bag 2 will be squeezed by the muscle groups, making it difficult for most of the bag 2 to enter the intestinal tract along the catheter body 1, and will accumulate at the proximal end of the catheter body 1. Through the setting of multiple groups of auxiliary expansion rings 9, when the bag 2 is squeezed at the entrance, it will stick to the surface of the auxiliary expansion ring 9 and expand with the support of the auxiliary expansion ring 9. At the same time, part of the bag 2 will shrink to the auxiliary expansion ring due to the squeezing. The V-shaped groove 13 provided on the expansion ring 9 allows most of the pouch 2 to enter the intestinal tract along the auxiliary expansion ring 9 on the catheter body 1, reducing the accumulation of the pouch 2 at the proximal end. At the same time, when liquid is injected into the pouch 2 through the valve 3, the muscle group at the entrance squeezes the pouch 2 and the catheter body 1. During injection, the liquid will first fill the pouch 2 at the proximal end of the catheter body 1, and it is difficult to enter the pouch 2 in the intestinal tract, resulting in insufficient expansion of the pouch 2 inside the intestinal tract. The semicircular tube wall 8 installed on the inner wall of the pouch 2 forms a pipeline lumen with one end closed and the other end open with the inner wall of the pouch 2. When liquid is injected into the pouch 2, it first flows into the end of the pouch 2 through the pipeline lumen, and first flushes and expands the pouch 2 inside the intestinal tract, so that the intestinal tract expands and shows a more sufficient course, with a better effect.

[0049] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A catheter for protecting a stoma intestinal tube during surgery, comprising a catheter body (1), a pouch (2), a valve (3) and a butterfly retainer (4), characterized in that: A pouch (2) is fixedly adhered to the catheter body (1), and the pouch (2) is wrapped around the outer periphery of the catheter body (1). A butterfly holder (4) is fixedly provided on the outer wall of the proximal end of the catheter body (1), and a valve (3) is fixedly provided at the proximal end of the pouch (2) near the butterfly holder (4). The catheter body (1) is cylindrical in shape with a blunt end, has a length of 40-45 cm, a diameter of 5-10 mm, and is made of latex; The material of the pouch (2) is elastic latex material, the end of the pouch (2) is 2 cm away from the end of the catheter body (1), and the proximal end of the pouch (2) is 5 cm away from the proximal end of the catheter body (1), and is in diameter communication with the valve (3); The material of the valve (3) is rubber or PVC; The butterfly holder (4) is made of PVC; A semicircular tube wall (8) extending to the end of the bladder (2) is fixedly mounted on the inner wall of the bladder (2) at a position corresponding to the connection hole of the valve (3), and the semicircular tube wall (8) is made of rubber; The semicircular tube wall (8) and the inner wall of the catheter body (1) form a pipeline lumen, and the end of the semicircular tube wall (8) corresponding to the bag (2) connected to the valve (3) is in a closed shape surrounding the connection hole, and the semicircular tube wall (8) is provided with a liquid outlet opening (10) near the end of the bag (2); A plurality of groups of equally spaced auxiliary expansion rings (9) are fixedly mounted on the outer wall of the area of ​​the catheter body (1) corresponding to the area wrapped by the sac (2), and one group of the auxiliary expansion rings (9) is close to the end of the sac (2). The auxiliary expansion rings (9) are composed of an integrated conical ring (11) and a circular ring (12), and the small diameter of the conical ring (11) faces the end of the catheter body (1), and the large diameter port of the conical ring (11) is fixedly connected to the circular ring (12); The auxiliary expansion ring (9) is provided with a plurality of through-type V-grooves (13) at the ports corresponding to the circular ring (12), and the V-grooves (13) extend to the midpoint of the conical ring (11). The outer walls of the corners of the auxiliary expansion ring (9) corresponding to the V-grooves (13) are all arc-shaped; An annular groove (14) is provided on the outer wall of the catheter body (1) close to the corresponding connection bags (2) at both ends, and the bag walls at the ports where the bag (2) and the catheter body (1) are fixedly connected are embedded in the groove (14).

2. A catheter for protecting a stoma intestinal tube during surgery according to claim 1, characterized in that: The valve (3) includes a silicone tube (16) connected to the bag (2) and a rubber cover (15) for sealing the injection port on the silicone tube (16). Eight groups of fan-shaped deformable blades (17) are fixedly connected to the inner wall of the port of the silicone tube (16). The eight groups of deformable blades (17) form a circle with the same diameter end face of the silicone tube (16) and the vertices of the eight groups of deformable blades (17) corresponding to the center of the circle are fitted with each other. The material of the deformable blades (17) is deformable and bent rubber.

3. The catheter for protecting a stoma intestinal tube during surgery according to claim 1, characterized in that: The butterfly holder (4) comprises a vertical plate (5) and an elliptical fixing plate (6). Two groups of symmetrical vertical plates (5) are fixedly installed on the outer wall of the catheter body (1) near the proximal end. The end surfaces of the two groups of vertical plates (5) facing away from the catheter body (1) are both fixedly installed with elliptical fixing plates (6). The two groups of elliptical fixing plates (6) are symmetrical with respect to the catheter body (1). Microholes (7) are opened near the edges of the two groups of elliptical fixing plates (6), and the diameter of the microholes (7) is 2 mm.

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