Catheter for protecting stoma intestinal canal in operation

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a catheter for protecting a stoma intestinal canal in an operation, the catheter comprises a catheter main body, the outer surface of the catheter main body is fixedly sleeved with a bag, and both sides of the outer wall of one end of the catheter main body are fixedly provided with butterfly fixators; a silicone tube is fixedly connected to the outer wall of the end, close to the butterfly fixator, of the bag, and a valve is fixedly connected to the tail end of the silicone tube. The bag almost wraps the whole catheter body, after liquid or gas is injected, an expansion bag with the uniform diameter can be formed, walking of the intestinal canal is shown, an operator can observe the stoma intestinal canal under an endoscope, in addition, the bag can be conveniently inserted into the coiled intestinal canal through the stoma and straighten out the intestinal canal, and the bag can be fixed to the skin and is convenient to use. And finally, the expansion degree of the bag can be correspondingly adjusted according to the use condition of a patient, so that the intestinal canal is prevented from being expanded by the excessively expanded bag.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical appliances, and particularly relates to a catheter for protecting the stoma intestine during surgery. Background Art

[0002] Parastomal hernia is one of the common complications after intestinal stoma. Most patients with PSH are asymptomatic and can receive conservative treatment. However, due to the aggravation of symptoms, difficult stoma care (leakage, discomfort) or emergencies such as obstruction and incarceration, 11 - 70% of patients will eventually need at least one operation. For patients with parastomal hernia, due to the fascia defect beside the stoma, the intestine enters the hernia sac and coils and adheres. Therefore, during the repair of parastomal hernia, there is a risk of damaging the intestine when separating the adhesion of the intestine in the hernia sac; moreover, the stoma intestine and the embedded intestine coil with each other, which is difficult to distinguish during the operation, bringing difficulties and challenges to the operation.

[0003] Currently, in order to avoid accidentally injuring the intestine during the operation, clinicians have also taken some measures. The most commonly used is the Foley's urinary catheter. The specific usage method: after disinfection and draping, insert the sterile urinary catheter into the intestine through the stoma, and then inject 15 - 20 ml of normal saline into the balloon through the syringe interface; during the operation, the stoma intestine can be judged by observing the bulge of the intestine and the method of touching the intestine with the instrument; however, this method has great defects:

[0004] ① The water injected into the balloon of the Foley's urinary catheter cannot exceed 30 ml, otherwise the balloon will burst due to too much internal pressure, so it is difficult to observe the bulge of the intestine at the balloon.

[0005] ② The largest model of the Foley's urinary catheter is 24Fr, corresponding to a diameter of 8 mm, and the touch of the endoscopic instrument is much worse than direct hand touch. It is very difficult to sense the urinary catheter in the intestine with the instrument.

[0006] ③ The Foley's urinary catheter is difficult to fix and will slowly slip off during the operation due to the influence of intestinal peristalsis. Summary of the Invention

[0007] The purpose of the present invention is to provide a catheter for protecting the stoma intestine during surgery, which can...

[0008] The technical solution adopted by the present invention is specifically as follows:

[0009] A catheter for protecting the stoma intestine during surgery, comprising a catheter main body, an outer surface of the catheter main body is fixedly sleeved with a sac, both sides of one end outer wall of the catheter main body are fixedly provided with butterfly fixators, one end outer wall of the sac close to the butterfly fixator is fixedly connected with a silicone tube, and a terminal of the silicone tube is fixedly connected with a valve.

[0010] Both ends of the sac are fixedly connected to the outer wall of the catheter body, and a sealed connection is formed between the sac and the outer wall of the catheter body. An inner cavity is formed between the inner side of the sac and the periphery of the catheter body, and the silicone tube is connected and communicated with the inner cavity.

[0011] Spherical protrusions are equidistantly arranged on the outer surface of the sac, and perforations penetrating the butterfly fixator are formed at the edges of the butterfly fixator.

[0012] The shape of the catheter body is set as a cylinder, and the length dimension of the catheter body is 40 - 45 cm, the diameter is 5 - 10 mm. The end of the catheter body far from the butterfly fixator is a blunt head, and the material of the catheter body is medical siliconized latex or latex.

[0013] The material of the sac is latex material. The end of the sac is 2 cm away from the end of the catheter body with a blunt head, and the other end of the sac is 5 cm away from the end of the catheter body with the butterfly fixator.

[0014] The valve further includes an outer valve tube. An insertion port is provided at the top end of the outer valve tube. An inner valve tube is fixedly arranged inside the outer valve tube. A conical sealing tube is fixedly arranged on the inner wall of the top end of the inner valve tube, and an inner plug is movably embedded inside the inner valve tube.

[0015] A hollowed - out frame is fixedly arranged at one end of the inner wall of the inner valve tube far from the conical sealing tube. The inner plug is connected to the hollowed - out frame through an inner spring arranged therebetween. A hollowed - out abutment frame is arranged at the edge of the end of the inner plug far from the inner spring.

[0016] Side slots are formed on both side walls at one end of the inner valve tube far from the silicone tube. An inner connecting tube is movably arranged inside the inner valve tube far from the silicone tube. Both outer walls at one end of the inner connecting tube are connected with side connecting rods penetrating the side slots.

[0017] The outer diameter dimension of the inner connecting tube is the same as the minimum inner diameter dimension of the conical sealing tube. The inner diameter dimension of the inner connecting tube is the same as the inner diameter dimension of the insertion port. The hollowed - out abutment frame is adapted to the size of the inner connecting tube.

[0018] An operation cavity is formed between the inner side of the outer valve tube and the outer side of the inner valve tube. An inner ring plate is movably arranged inside the operation cavity, and the end of the side connecting rod is fixedly connected to the inner ring plate. An outer spring is arranged on the outer surface of the inner valve tube inside the operation cavity. An outer sliding tube is movably sleeved on the outer surface of the outer valve tube, and the outer sliding tube is fixedly connected to the inner ring plate through a connecting rod penetrating the side wall of the outer valve tube.

[0019] A catheter for protecting the stoma intestinal tube during operation, and its using steps are specifically as follows:

[0020] S1: Before use, the surface of the catheter body needs to be fully coated with paraffin oil. Then, insert the front end of the catheter into the intestinal tract through the stoma and move it forward to the end.

[0021] S2: Insert the syringe head into the valve, and inject liquid or gas into the sac through the valve to expand the sac, so as to expand the intestinal tract and show its running route. The spherical protrusion can reduce the resistance when the sac moves in the intestinal tract.

[0022] S3: Fix the catheter body with the set butterfly fixator. The butterfly fixator can be fixed to the skin surface by using the perforation and sewing needles.

[0023] S4: Manually fine-tune the content of liquid or gas in the sac, manually control the outer sliding tube and make it slide. At this time, the inner connecting tube will move and simultaneously push the inner plug. After the inner plug moves a certain distance, the liquid or gas in the sac can pass through the gaps of the hollowed-out support frame and be discharged.

[0024] The technical effects achieved by the present invention are as follows:

[0025] (1) Compared with the Foley's urinary catheter, the sac of the present invention almost wraps the entire catheter body. After injecting liquid or gas, it can form an expansion sac with a uniform diameter, making the running route of the intestinal tract visible, which is beneficial for surgeons to observe the stoma intestinal tract under the endoscope.

[0026] (2) In the present invention, the catheter body part is solid, with a certain degree of softness and hardness, which is convenient for inserting into the coiled intestinal tract through the stoma to straighten the intestinal tract. In addition, the valve is connected to the sac. After the syringe head is inserted and a certain pressure is applied, liquid or gas can be injected into the sac, and the liquid or gas in the sac can be prevented from overflowing after the syringe is withdrawn.

[0027] (3) In the present invention, the proximal end of the catheter body is connected with symmetrically distributed butterfly fixators, and there are small holes near the edge of the fixators, which can be fixed to the skin by sewing needles.

[0028] (4) In the present invention, when it is necessary to manually adjust the content of liquid or gas in the sac, manually control the outer sliding tube and make it slide. The inner connecting tube will move and simultaneously push the inner plug. After the inner plug moves a certain distance, the liquid or gas in the sac can pass through the gaps of the hollowed-out support frame and be discharged. In the above process, while ensuring the one-way drainage function of the valve, it also has the function of regulating the discharge flow, and can adjust the expansion degree of the sac according to the usage situation of the patient, thereby avoiding the over-expanded sac from stretching the intestinal tract. Description of the Drawings

[0029] Figure 1 is the front view three-dimensional drawing provided by the embodiment of the present invention;

[0030] Figure 2It is a partial sectional perspective view provided by an embodiment of the present invention;

[0031] Figure 3 It is an internal structure diagram of the valve provided by an embodiment of the present invention;

[0032] Figure 4 It is Figure 2 The partial enlarged structure diagram at position A in

[0033] In the accompanying drawings, the list of components represented by each reference numeral is as follows:

[0034] 1. Conduit main body; 2. Pouch; 201. Silicone tube; 202. Inner cavity; 203. Spherical protrusion; 3. Butterfly fixator; 301. Perforation; 4. Valve; 401. Outer valve tube; 402. Inner valve tube; 403. Conical sealing tube; 404. Socket; 405. Inner plug; 406. Hollowed-out frame; 407. Inner spring; 408. Hollowed-out abutment frame; 409. Side slot; 410. Inner connecting tube; 411. Side link; 412. Inner ring plate; 413. Outer sliding tube; 414. Outer spring; 415. Operation cavity. Detailed implementation manners

[0035] In order to make the purpose and advantages of the present invention clearer, the present invention will be specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific implementation manners of the present invention, and does not strictly limit the specific protection scope claimed by the present invention.

[0036] A catheter for protecting the stoma intestine during surgery, and its usage steps are specifically as follows:

[0037] S1: Before use, the surface of the conduit main body 1 needs to be fully coated with paraffin oil, and then the front end of the conduit is inserted into the intestine through the stoma and advanced to the end;

[0038] S2: Insert the syringe head into the valve 4, and inject liquid or gas into the pouch 2 through the valve 4 to expand the pouch 2, so as to expand the intestine and show its running route, and the setting of the spherical protrusion 203 can reduce the resistance when the pouch 2 moves in the intestine;

[0039] S3: Fix the conduit main body 1 through the provided butterfly fixator 3, and the butterfly fixator 3 can be sewn and fixed on the skin surface by using the perforation 301;

[0040] S4: Manually fine-tune the content of the liquid or gas in the pouch 1, manually control the outer sliding tube 413 and make it slide. At this time, the inner connecting tube 410 will move and simultaneously push the inner plug 405. After the inner plug 405 moves a certain distance, the liquid or gas in the pouch 2 can pass through the gaps of the hollowed-out abutment frame 408 and be discharged.

[0041] It includes a catheter body 1, a pouch 2 is fixedly sleeved on the outer surface of the catheter body 1. On both sides of the outer wall at one end of the catheter body 1, butterfly fixators 3 are fixedly arranged. One end of the pouch 2 near the butterfly fixator 3 is fixedly connected to a silicone tube 201, and a valve 4 is fixedly connected to the end of the silicone tube 201.

[0042] Refer to the appendix Figure 1 , the shape of the catheter body 1 is set as a cylinder, and the length dimension of the catheter body 1 is 40 - 45 cm, the diameter is 5 - 10 mm. The end of the catheter body 1 far from the butterfly fixator 3 is a blunt head, and the material of the catheter body 1 is medical siliconized latex or latex. The catheter body 1 is cylindrical and has a certain softness and hardness by itself.

[0043] Refer to the appendix Figure 2 and Figure 4 , both ends of the pouch 2 are fixedly connected to the outer wall of the catheter body 1, and the connection between the pouch 2 and the outer wall of the catheter body 1 is a sealed connection. The pouch 2 is adhesively attached to the catheter body 1 tightly without leaking water or air. An inner cavity 202 is formed between the inner side of the pouch 2 and the periphery of the catheter body 1, and the silicone tube 201 is connected and communicated with the inner cavity 202. Spherical protrusions 203 are equidistantly arranged on the outer surface of the pouch 2, and air or liquid can be injected into the inner cavity 202 through the silicone tube 201.

[0044] Refer to the appendix Figure 1 , the material of the pouch 2 is latex material, which has good elasticity and can expand significantly. The end of the pouch 2 is 2 cm away from the end of the catheter body 1 with a blunt head, and the other end of the pouch 2 is 5 cm away from the end of the catheter body 1 with the butterfly fixator 3.

[0045] Refer to the appendix Figure 1 , perforations 301 penetrating through the butterfly fixator 3 are formed at the edge of the butterfly fixator 3. The material of the butterfly fixator 3 is PVC, and the diameter of the perforations 301 near the edge is 2 mm, which can be sutured and fixed or fixed with a film to the skin around the stoma.

[0046] Refer to the appendix Figure 3, the valve 4 further includes an outer valve tube 401. The valve 4 is made of rubber or PVC and has a relatively hard texture, which is convenient for the head end of the syringe to be inserted. An insertion port 404 is provided at the top end of the outer valve tube 401 of the valve 4. An inner valve tube 402 is fixedly arranged inside the outer valve tube 401. A conical sealing tube 403 is fixedly arranged on the inner wall of the top end of the inner valve tube 402. An inner plug 405 is movably embedded inside the inner valve tube 402. A hollow frame 406 is fixedly arranged at one end of the inner wall of the inner valve tube 402 away from the conical sealing tube 403. The inner plug 405 is connected to the hollow frame 406 through a set inner spring 407. A hollow abutment frame 408 is arranged at the edge of the end of the inner plug 405 away from the inner spring 407. When the syringe needle is inserted into the insertion port 404 and pushes the inner plug 405, the inner plug 405 will move away from the inner side of the conical sealing tube 403 to dredge the inner valve tube 402. At this time, the liquid or gas in the syringe will enter the silica gel tube 201 through the inner valve tube 402. When the syringe is pulled out, under the action of the inner spring 407 in the compressed state, the inner plug 405 will re-embed into the conical sealing tube 403, thereby achieving the effect of blocking the inner valve tube 402. At this time, the liquid or gas in the bladder 2 can be prevented from overflowing.

[0047] Refer to the appendix Figure 3 , side slots 409 are provided on both side walls at one end of the inner valve tube 402 away from the silica gel tube 201. An inner connecting tube 410 is movably arranged inside the inner valve tube 402 away from the silica gel tube 201. Side connecting rods 411 penetrating through the side slots 409 are connected to the outer walls on both sides of one end of the inner connecting tube 410. The outer diameter dimension of the inner connecting tube 410 is the same as the minimum inner diameter dimension of the conical sealing tube 403. The inner diameter dimension of the inner connecting tube 410 is the same as the inner diameter dimension of the insertion port 404. The hollow abutment frame 408 is adapted to the size of the inner connecting tube 410.

[0048] Refer to the appendix Figure 3 , an operation cavity 415 is formed between the inner side of the outer valve tube 401 and the outer side of the inner valve tube 402. An inner ring plate 412 is movably arranged inside the operation cavity 415. The end of the side connecting rod 411 is fixedly connected to the inner ring plate 412. An outer spring 414 is arranged on the outer surface of the inner valve tube 402 inside the operation cavity 415. An outer sliding tube 413 is movably sleeved on the outer surface of the outer valve tube 401. The outer sliding tube 413 is fixedly connected to the inner ring plate 412 through a connecting rod penetrating through the side wall of the outer valve tube 401. When it is necessary to manually adjust the content of the liquid or gas in the bladder 2, the outer sliding tube 413 is manually controlled to generate relative sliding with the outer valve tube 401. At this time, under the connection of the side connecting rod 411, the inner connecting tube 410 will move and simultaneously push the inner plug 405. After the inner plug 405 moves a certain distance, the liquid or gas in the bladder 2 can pass through the gaps of the hollow abutment frame 408 and be discharged.

[0049] The working principle of the present invention is as follows: This catheter is used for parastomal hernia repair surgery or other surgeries that may damage the stoma intestine, especially in laparoscopic surgeries. Before use, the surface of the catheter needs to be fully coated with paraffin oil. The front end of the catheter is inserted into the intestine through the stoma and advanced to the end. Then, liquid is injected into the pouch 2 through the valve 4 to expand the pouch 2, so as to dilate the intestine and show its course. The spherical protrusion 203 can reduce the resistance when the pouch 2 moves in the intestine;

[0050] The pouch 2 almost wraps the entire catheter body 1. After injecting liquid or gas into the inner cavity 202, a dilation pouch with a uniform diameter can be formed. The diameter of the dilation pouch can reach 3 - 5 cm, enabling the course of the intestine to be revealed, which is beneficial for the surgeon to observe the stoma intestine under the laparoscope. In addition, the valve 4 is connected to the pouch 2. After the syringe head is inserted and a certain pressure is applied, liquid or gas can be injected into the pouch 2. After the syringe is withdrawn, it can prevent the liquid or gas in the pouch 2 from overflowing. The proximal end of the catheter body 1 is connected to the symmetrically distributed butterfly fixator 3, and there are perforations 301 near the edge of the fixator, through which it can be sutured and fixed to the skin;

[0051] During the use of the valve 4, the syringe needle is inserted into the socket 404 and pushes the inner plug 405. The inner plug 405 will move away from the inner side of the conical sealing tube 403 to dredge the inner valve tube 402. At this time, the liquid or gas in the syringe will enter the silicone tube 201 through the inner valve tube 402. When the syringe is withdrawn, under the action of the inner spring 407 in the compressed state, the inner plug 405 will re - embed into the conical sealing tube 403, thus achieving the effect of blocking the inner valve tube 402. At this time, it can prevent the liquid or gas in the pouch 2 from overflowing;

[0052] In addition, when it is necessary to manually adjust the content of liquid or gas in the pouch 2, manually control the outer sliding tube 413 to make it slide relative to the outer valve tube 401. At this time, under the connection of the side link 411, the inner connecting tube 410 will move and simultaneously push the inner plug 405. After the inner plug 405 moves a certain distance, the liquid or gas in the pouch 2 can pass through the gaps of the hollowed - out support frame 408 and be discharged. The above process, while ensuring the one - way drainage function of the valve 4, also has the function of adjusting the discharge flow, and can adjust the degree of inflation of the pouch 2 according to the usage situation of the patient, thereby avoiding the over - inflated pouch 2 from dilating the intestine.

[0053] The above - mentioned is only the preferred implementation mode of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention, unless otherwise specifically stated and limited, are implemented according to the conventional means in the art.

Claims

1. A catheter for protecting the stoma intestine during surgery, comprising a catheter body (1), characterized in that: The outer surface of the catheter body (1) is fixedly sleeved with a bladder (2). On both sides of the outer wall at one end of the catheter body (1), butterfly fixators (3) are fixedly arranged. One end outer wall of the bladder (2) close to the butterfly fixator (3) is fixedly connected with a silicone tube (201), and the end of the silicone tube (201) is fixedly connected with a valve (4). Both ends of the bladder (2) are fixedly connected to the outer wall of the catheter body (1), and a sealed connection is formed between the bladder (2) and the outer wall of the catheter body (1). An inner cavity (202) is formed between the inner side of the bladder (2) and the periphery of the catheter body (1), and the silicone tube (201) is connected and communicated with the inner cavity (202).

2. The catheter for protecting the stoma intestinal tube during surgery according to claim 1, characterized in that: Spherical protrusions (203) are equidistantly arranged on the outer surface of the bladder (2). A perforation (301) penetrating through the butterfly fixator (3) is formed at the edge of the butterfly fixator (3).

3. A catheter for protecting the stoma intestine during surgery according to claim 1, characterized in that: The catheter body (1) is shaped like a cylinder, and the length dimension of the catheter body (1) is 40 - 45 cm, and the diameter is 5 - 10 mm. The end of the catheter body (1) far from the butterfly fixator (3) is a blunt head, and the material of the catheter body (1) is medical siliconized latex or latex.

4. A catheter for protecting the stoma intestine during surgery according to claim 1, characterized in that: The material of the bladder (2) is latex. The end of the bladder (2) is 2 cm away from the end of the catheter body (1) with a blunt head, and the other end of the bladder (2) is 5 cm away from the end of the catheter body (1) with the butterfly fixator (3).

5. A catheter for protecting the stoma intestine during surgery according to claim 1, characterized in that: The valve (4) further includes an outer valve tube (401). An insertion opening (404) is formed at the top end of the outer valve tube (401). An inner valve tube (402) is fixedly arranged inside the outer valve tube (401). A conical sealing tube (403) is fixedly arranged on the inner wall at the top end of the inner valve tube (402), and an inner plug (405) is movably embedded inside the inner valve tube (402).

6. The catheter for protecting the stoma intestine during surgery according to claim 5, characterized in that: A hollowed - out frame (406) is fixedly arranged at one end of the inner wall of the inner valve tube (402) far from the conical sealing tube (403). The inner plug (405) is connected to the hollowed - out frame (406) through an inner spring (407) arranged therebetween. A hollowed - out abutment frame (408) is arranged at the edge of the end of the inner plug (405) far from the inner spring (407).

7. The catheter for protecting the stoma intestine during surgery according to claim 6, characterized in that: On both side walls at one end of the inner valve tube (402) far from the silicone tube (201), side slots (409) are formed. An inner connecting tube (410) is movably arranged inside the inner valve tube (402) far from the silicone tube (201). On both outer walls at one end of the inner connecting tube (410), side connecting rods (411) penetrating through the side slots (409) are connected.

8. A catheter for protecting the stoma intestine during surgery according to claim 7, characterized in that: The outer diameter dimension of the inner connecting tube (410) is the same as the minimum inner diameter dimension of the conical sealing tube (403). The inner diameter dimension of the inner connecting tube (410) is the same as the inner diameter dimension of the insertion opening (404). The hollowed - out abutment frame (408) is adapted to the size of the inner connecting tube (410).

9. The catheter for protecting the stoma intestine during operation according to claim 8, wherein: An operation cavity (415) is formed between the inner side of the outer valve tube (401) and the outer side of the inner valve tube (402). An inner ring plate (412) is movably arranged inside the operation cavity (415), and the end of the side connecting rod (411) is fixedly connected to the inner ring plate (412). An outer spring (414) is arranged on the outer surface of the inner valve tube (402) inside the operation cavity (415). An outer sliding tube (413) is movably sleeved on the outer surface of the outer valve tube (401), and the outer sliding tube (413) is fixedly connected to the inner ring plate (412) through a connecting rod penetrating through the side wall of the outer valve tube (401).

10. A catheter for protecting the stoma intestinal tube during surgery according to claims 1-9, and the using steps are specifically as follows: S1: Before use, the surface of the catheter main body (1) needs to be fully coated with paraffin oil, and then the front end of the catheter is inserted into the intestinal tube from the stoma and advanced to the end; S2: The syringe head is inserted into the valve (4), and liquid or gas is injected into the balloon (2) through the valve (4) to expand the balloon (2), so that the intestinal tube is dilated and the running direction is shown, and the spherical protrusion (203) can reduce the resistance when the balloon 2 moves in the intestinal tract; S3: The catheter main body (1) is fixed by the provided butterfly fixator (3), and the butterfly fixator (3) can be fixed to the skin surface by sewing needles using the perforations (301); S4: Manually fine-tune the content of the liquid or gas in the balloon (1), manually control the outer sliding tube (413) and make it slide. At this time, the inner connecting tube (410) will move and simultaneously push the inner plug (405). After the inner plug (405) moves a certain distance, the liquid or gas in the balloon (2) can pass through the gaps of the hollowed-out support frame (408) and be discharged.

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