A leak tester

Abstract

The present invention relates to the field of medical device technology, and in particular to a leakage tester, comprising a bracket seat, which is installed in a ventilating pipe seat; the top surface of the ventilating pipe seat cover is connected with a main pipe for one-way air intake and a branch pipe for pressure relief and air stopping; the top of the main pipe is connected with an injection valve joint, the main pipe is connected to an air bag through the injection valve joint, a pressure plate is installed in the injection valve joint, a mercury suction piece arranged on the end face of the through hole is installed on the pressure plate, an air intake valve seat is installed on the top of the air bag, and a one-way air intake valve is installed on the air intake valve seat; a pressure relief valve is installed inside the branch pipe, and a pressure cap is installed on the top surface of the branch pipe. The present invention can timely disassemble and replace a suitable ventilating pipe according to different needs, has high practicality, can intuitively observe the value of the pressure gauge during operation, use the pressure relief valve to observe the working state of the leakage tester under stable pressure and automatically adjust the pressure, effectively improve the test effect, and avoid secondary damage to the anastomosis.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a leakage tester. Background Art

[0002] Due to various technical defects, the anastomosis of patients is prone to leakage after colorectal surgery. Therefore, leakage detection is usually performed during surgery to facilitate timely repair or management of anastomotic defects exposed during surgery to reduce postoperative clinical leakage. However, the closer the surgical site is to the proximal end of the anus, the more difficult it is to detect. Currently, there are two main methods for anastomotic leakage testing. The first is to inject liquid (saline or solution with added dye) into the intestine, expand the anastomosis and observe whether there is liquid leakage; the second is to fill the intestine with air, immerse the anastomosis in the liquid and observe whether there are bubbles.

[0003] When patients undergo colorectal surgery, their anal sphincters are in a relaxed state due to anesthesia. When leak detection is performed, it is difficult for the anastomosis to form an effective sealed cavity with the cylindrical outlet. Existing products are usually modified from syringe tubes, which cannot adjust the pressure in time and are prone to leaks during the gas injection process, resulting in insufficient inflation of the intestinal cavity and insufficient expansion, making it impossible to detect whether the hidden anastomosis is leaking. It is also easy to over-inflate and cause the anastomosis to tear, and the leak detection effect is not ideal. In addition, conventional equipment is difficult to perform leak detection on the anastomosis of ultra-low rectal cancer radical surgery.

[0004] The patent with publication number CN203591517U discloses a medical closed transanal intestinal anastomosis leak detector, including a hollow tube body, a rubber plug arranged outside the first end of the tube body and surrounding the air outlet, and an air injection device arranged at the second end of the tube body. This patent is modified from a syringe tube and cannot form an effective closed channel. There is no effective pressure relief device. When the pressure is too high, the originally intact sutured part is easy to expand due to excessive pressure. When the pressure is insufficient, the detection effect is poor.

[0005] The patent with publication number CN206325113U discloses a drug guiding and drainage device for hepatobiliary and pancreatic surgical chemotherapy, including an air bag, a drug guiding main tube, a drug guiding branch tube, a plug-in connector and a syringe. The patent performs drug guiding and drainage when the syringe is in a negative pressure state, while the present application performs detection when the device is in a positive pressure state.

[0006] Patent No. CN210873544U discloses a simple endotracheal tube airbag pressure monitor. The patent has a two-way ventilation valve at the middle end of the connecting tube for inflation or deflation, but cannot achieve one-way flow of gas, resulting in unsatisfactory detection effect. Summary of the invention

[0007] The object of the present invention is to provide a leakage tester to solve the problems raised in the above background technology.

[0008] The present invention is achieved through the following technical solutions:

[0009] A leak tester, comprising:

[0010] Snorkel;

[0011] A vent pipe seat, the vent pipe seat includes a connecting pipe arranged at the end, the connecting pipe is connected to the vent pipe;

[0012] A vent pipe seat cover, the vent pipe seat cover is installed on the top surface of the vent pipe seat;

[0013] It is characterized in that it also includes a bracket seat, which is installed in the ventilation pipe seat;

[0014] The vent pipe comprises a pipe body and a sphere;

[0015] The top surface of the vent pipe seat cover is connected with a main pipe for one-way air intake and a branch pipe for pressure relief and air stopping;

[0016] The top of the main pipe is connected with an air injection valve joint, the main pipe is connected to the air bag through the air injection valve joint, a pressure plate is installed in the air injection valve joint, a mercury suction sheet arranged on the end surface of the through hole is installed on the pressure plate, an air intake valve seat is installed on the top of the air bag, and a one-way air intake valve is installed on the air intake valve seat;

[0017] A pressure relief valve is installed inside the branch pipe, and a pressure cover is installed on the top surface of the branch pipe.

[0018] Preferably, the outer periphery of the vent pipe seat cover is provided with a first seal, and the vent pipe seat, the bracket seat and the vent pipe seat cover are assembled as a whole through the first seal; the outer periphery of the main pipe is provided with a second seal, and the vent pipe seat cover and the injection valve connector are assembled as a whole through the second seal.

[0019] Preferably, a mounting piece is sleeved on the outer periphery of the top of the ventilation pipe, a positioning lug is provided on the top surface of the mounting piece, and a positioning groove matched with the positioning lug is provided on the inner wall surface of the connecting pipe.

[0020] Preferably, buckles connected to the branch pipes are arranged at intervals on the sides of the gland.

[0021] Preferably, the connection between the ventilation pipe and the ventilation pipe seat is configured as a detachable connection.

[0022] Preferably, the side of the sphere is provided with air holes, and the air holes are arranged at the front end, middle part or rear end of the ventilation tube; the shape of the air holes is set to be circular or elliptical, and there are one or more air holes.

[0023] Preferably, the aperture of the tube body is set to 15-22 mm, and the aperture of the connecting tube is set to 17-30 mm.

[0024] Preferably, the pressure relief valve is configured as a needle valve type, the pressure relief valve includes a pressure relief valve stem, the top of the pressure relief valve stem is connected to a compression spring; the side of the pressure relief valve stem is provided with a scale, and the side of the branch pipe is provided with a color indication area corresponding to different scales.

[0025] Based on the above leakage tester, the present invention proposes a method for using the leakage tester, which specifically includes the following steps:

[0026] S1. According to different surgical requirements, a ventilating tube with appropriate tube length and aperture size is selected. At this time, the side of the ventilating tube sphere is provided with a suitable number and shape of ventilating holes. The top of the ventilating tube is inserted into the connecting tube of the ventilating tube seat. The ventilating tube seat, the bracket seat and the ventilating tube seat cover are assembled as a whole using the first sealing member to form a sealed channel for high-pressure gas transmission. At this time, the mercury suction piece is in contact with the end face of the through hole in the middle of the gas injection valve joint;

[0027] S2. Insert the ventilation tube into the intestinal cavity, combine the ventilation tube seat structure at the upper end of the connecting tube with the anus, seal the gas in the intestinal cavity, manually squeeze the airbag, and the air enters the airbag through the middle channel of the intake valve seat. The airbag is pressurized to generate positive pressure gas. At this time, the positive pressure gas pushes the mercury suction piece to bend inward along the central fixed part. Under the support of the pressure plate, the gas transmission channel is opened, and the positive pressure gas passes through the mercury suction piece along the main pipe and enters the ventilation tube. At the same time, the one-way intake valve at the end of the airbag moves toward the direction of the intake valve seat under the push of the high-pressure gas. The end face of the one-way intake valve is tightly fitted with the end face of the intake valve seat to form a seal, thereby realizing the one-way flow of the gas in the airbag, delivering the positive pressure gas into the intestinal cavity, causing the intestinal cavity to expand, and performing leakage detection;

[0028] S3. The positive pressure gas delivered by the balloon is delivered to the intestinal cavity. During the test, the value of the pressure gauge can accurately indicate the real-time air pressure. The scale of the pressure relief valve is aligned with the color indicator area set on the side of the branch pipe, which can indicate the working status of the detector. When the pressure in the intestinal cavity exceeds the set value, it means that the anastomosis is not leaking and the anastomosis effect of the operation is good.

[0029] S4. When the pressure in the intestinal cavity exceeds the set value, the positive pressure gas pushes the pressure relief valve stem, and the pressure relief valve stem pushes the compression spring. After the compression spring is compressed, the pressure relief channel on the branch pipe is connected, and the excess gas pressure inside the detector begins to be removed. The pressure relief valve stem forms a conical pressure relief channel inside the branch pipe, and the excess gas is discharged from the intestinal cavity from the side of the branch pipe along the pressure relief channel.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] The present invention can disassemble and replace a suitable vent tube in time according to different location requirements. The vent tube with a plug-in design is not easy to shift or fall off during use. The conical vent tube seat can fit tightly on the implantation site, and it is easier to form a sealed channel during detection, thereby ensuring that the intestinal cavity air pressure is constant while reducing perianal bleeding, and it is highly practical. The present invention can intuitively observe the value of the pressure gauge during operation. The value of the pressure gauge indicates the pressure of the injected gas. The pressure relief valve is used to observe the working state of the leakage tester under stable pressure and automatically adjust the pressure, which can effectively improve the test effect and avoid secondary damage to the anastomosis. The present invention adopts the method of airbag inflation to provide positive pressure gas, which improves the convenience of operation. The mercury suction piece and the gas injection valve joint with good sealing effect are used to facilitate the one-way flow of gas, thereby improving the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0033] Figure 1 It is an exploded view of Example 1 of the present invention;

[0034] Figure 2 This is a schematic diagram of the assembly structure of Example 1 of the present invention;

[0035] Figure 3 It is a schematic diagram of the structure of the ventilation pipe of the present invention;

[0036] Figure 4 It is a structural schematic diagram of the ventilation pipe seat of the present invention;

[0037] Figure 5 A top view of the vent pipe seat of the present invention;

[0038] Figure 6 It is a cross-sectional schematic diagram of the internal structure of the branch pipe of the present invention. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0040] Embodiment 1:

[0041] like Figure 1-6As shown, this embodiment provides a leakage tester, including a vent pipe seat 2 and a bracket seat 3. The vent pipe seat 2 adopts a conical design. The vent pipe seat 2 includes a connecting pipe 201 arranged at the end. The connecting pipe 201 is connected to the vent pipe 1. The connection between the vent pipe 1 and the vent pipe seat 2 is set to be detachable. The vent pipe 1 includes a tube body 101 and a sphere 102. The side of the sphere 102 is provided with a vent hole. The outer peripheral sleeve of the top of the vent pipe 1 is provided with a mounting member 104. The top surface of the mounting member 104 is provided with a There is an elastic positioning protrusion 105, which is a hollow design. The inner wall surface of the connecting pipe 201 is provided with a positioning groove 202 that is compatible with the positioning protrusion 105, which is used to position the ventilation pipe 1 on the ventilation pipe seat 2. A bracket seat 3 is installed in the ventilation pipe seat 2, and a ventilation pipe seat cover 5 arranged above the bracket seat 3 is installed on the top surface of the ventilation pipe seat 2. The outer peripheral sleeve of the ventilation pipe seat cover 5 is provided with a first sealing member 4. The ventilation pipe seat 2, the bracket seat 3 and the ventilation pipe seat cover 5 are assembled as a whole through the first sealing member 4.

[0042] The top surface of the vent pipe seat cover 5 is connected with a main pipe 501 for one-way air intake and a branch pipe 502 for pressure relief and air stopping. The pressure gauge 6 is installed on the mounting hole 504 on the side of the main pipe 501. The top of the main pipe 501 is connected with an injection valve connector 10. The outer peripheral sleeve of the main pipe 501 is provided with a second sealing member 7. The vent pipe seat cover 5 and the injection valve connector 10 are assembled as a whole through the second sealing member 7. The main pipe 501 is connected to the airbag 11 through the injection valve connector 10. A pressure plate 8 is installed in the injection valve connector 10. A mercury suction piece arranged on the end surface of the through hole is installed on the pressure plate 8. 9. The middle part of the mercury suction piece 9 is fixed on the pressure plate 8. The raw material of the mercury suction piece 9 is elastic material. An intake valve seat 13 is installed on the top of the airbag 11. A one-way intake valve 12 is installed on the intake valve seat 13. A pressure relief valve 14 is installed in the branch pipe 502. The pressure relief valve 14 includes a pressure relief valve stem. The tip part of the pressure relief valve stem is inserted into the branch pipe 502. A compression spring 15 is connected to the top of the pressure relief valve stem. The compression spring 15 resists the plane of the pressure relief valve stem. A pressure cover 16 is installed on the top surface of the branch pipe. The side of the pressure cover 16 is spaced apart with buckles 1601 connected to the branch pipe.

[0043] Based on the above leakage tester, the present invention also proposes a method for using the leakage tester, which specifically includes the following steps:

[0044] S1. According to different surgical requirements, a ventilation tube 1 with a suitable length and aperture size is selected. At this time, the side of the spherical body of the ventilation tube 1 is provided with a suitable number and shape of ventilation holes 103. The top of the ventilation tube 1 is inserted into the connecting tube 201 of the ventilation tube seat 2. At this time, the positioning protrusion 105 provided on the top surface of the mounting member 104 is inserted into the matching positioning groove 202 to achieve the positioning installation of the ventilation tube 1 and the ventilation tube seat 2. The ventilation tube seat 2, the bracket seat 3 and the ventilation tube seat cover 5 are assembled as a whole by using the first sealing member 4 to form a sealed channel for positive pressure gas transmission. At this time, the mercury suction piece 9 is in contact with the end face of the through hole in the middle of the gas injection valve joint 10;

[0045] S2. After the ventilating tube 1 is inserted into the intestinal cavity, the structure of the ventilating tube seat 2 at the upper end of the connecting tube 201 is matched with the anus to achieve sealing of the intestinal cavity. The airbag 11 is manually squeezed, and the air enters the airbag 11 through the middle channel of the intake valve seat 13. The airbag 11 is pressurized to generate positive pressure gas. At this time, the positive pressure gas pushes the mercury suction piece 9 to bend inward along the central fixed part. Under the support of the pressing plate 8, the gas delivery channel is opened, and the positive pressure gas enters the ventilating tube 1 along the main pipe 501 through the mercury suction piece 9. At this time, the end face of the one-way intake valve 12 is tightly fitted with the end face of the intake valve seat 13 to form a seal, and the positive pressure gas is delivered to the intestinal cavity, and the intestinal cavity expands. The pressure gauge 6 and the pressure relief valve 14 are used for leakage detection;

[0046] When the squeezed airbag 11 is released, the mercury absorber 9 returns to its original state in time without external force, and fits with the end face of the through hole in the middle of the air injection valve joint 10, which can prevent the positive pressure gas delivered from flowing back into the airbag 11. At this time, the one-way air intake valve 12 moves toward the air intake end of the air intake valve seat 13 under the push of negative pressure, and the air re-enters the airbag 11 from the middle channel of the air intake valve seat 13, realizing the one-way flow of gas in the airbag 11.

[0047] S3, the positive pressure gas delivered by the airbag 11 is delivered to the intestinal cavity. During the test, the value of the pressure gauge 6 can accurately represent the real-time air pressure. The scale of the pressure relief valve 14 is aligned with the color indicator area 503 set on the side of the branch pipe 502, which can indicate the working state of the detector. When the pressure in the intestinal cavity exceeds the set value, it means that the anastomosis is not leaking and the anastomosis effect of the operation is good.

[0048] S4. When the pressure in the intestinal cavity exceeds the set value, the positive pressure gas pushes the pressure relief valve stem, and the pressure relief valve stem pushes the compression spring 15. After the compression spring 15 is compressed, the pressure relief channel on the branch pipe 502 is connected, and the excess gas pressure inside the detector begins to be removed. The pressure relief valve stem forms a conical pressure relief channel inside the branch pipe 502, and the excess gas is discharged from the intestinal cavity from the side of the branch pipe 502 along the pressure relief channel.

[0049] Embodiment 2:

[0050] like Figure 1-3As shown, the difference between this embodiment and embodiment 1 is that: the air hole 103 is arranged at the front end, middle part or rear end of the ventilation pipe 1; the shape of the air hole 103 is set to be circular or elliptical, and one or more air holes 103 are provided; the aperture of the tube body 101 is set to 15-22mm, and the aperture of the connecting pipe 201 is set to 17-30mm, and the rest is the same as embodiment 1.

[0051] The present invention can select a suitable ventilator 1 according to different needs. In low-position surgery, the ventilator 1 can use a shorter tube body 101, and the air holes 103 can be set in the middle or front end of the sphere 102 to avoid the air holes 103 from fitting with the tissue at the rear end and causing blockage. When a tube body 101 with a smaller aperture is selected, the air holes 103 are generally arranged at intervals in the middle of the sphere 102. At this time, the air holes 103 are set as an elliptical structure, and the number is 2 or 4; when a tube body 101 with a larger aperture is selected, the air holes 103 are generally arranged at the front end of the sphere 102. At this time, the air holes 103 are set as a circular structure, and the number is 1. When a ventilator 1 with a longer tube body 101 is used, the air holes 103 are generally arranged at intervals in the rear section of the sphere 102. At this time, the air holes 103 are set as a circular structure, and the number is 2 or 4.

[0052] Embodiment 3:

[0053] like Figure 1-6 As shown, the difference between this embodiment and embodiment 2 is that: the pressure relief valve 14 is set to a needle valve type; the side of the pressure relief valve stem is provided with a scale, and the side of the branch pipe 502 is provided with a color indication area 503 corresponding to different scales. Furthermore, the pressure inside the intestinal cavity is normally 30-40 cmH 2 O (or 22-30 mmHg), when the pressure inside the intestinal cavity is 35-40 cmH 2 When the pressure inside the intestinal cavity exceeds 40 cmHg, the scale mark on the pressure relief valve stem is aligned with the red area on the branch pipe 502, indicating that the air pressure inside the intestinal cavity is normal. 2 When the pressure drops to 0 (or 30 mmHg), the scale mark on the pressure relief valve stem is aligned with the green area on the branch pipe, indicating that the pressure relief valve 14 is in the conducting state. The rest is the same as in Example 2.

[0054] In this embodiment, a red area and a green area are provided on the side of the branch pipe 502. When the scale mark line on the side of the pressure relief valve stem points to the red area, the pressure relief valve 14 with a needle valve structure is in a sealed state. Since the pressure relief valve 14 has a certain lifting space, when the air pressure does not reach the set value, the pressure relief valve 14 has an opening distance; when the value of the pressure gauge 6 exceeds the set value, the scale mark line on the side of the pressure relief valve stem points to the green area. Under the push of the positive pressure gas, the pressure relief valve stem overcomes the pressure of the compression spring 15 and moves. The vent seat cover 5 and the pressure relief valve stem form a conical pressure relief channel in the branch pipe 502. The pressure relief valve 14 is in a pressure relief state, and excess gas is discharged from the intestinal cavity along the pressure relief channel.

[0055] The present invention is highly practical, and can timely disassemble and replace the appropriate ventilation tube 1 according to different needs. The ventilation tube 1 with a plug-in design is not easy to shift or fall off during use, and the ventilation tube seat 2 with a conical design can fit tightly with the implantation site, and it is easier to form a sealed channel during detection, ensuring constant intestinal cavity air pressure while reducing perianal bleeding. The present invention uses a pressure gauge 6 in conjunction with a pressure relief valve 14, and visually observes the value of the pressure gauge during operation, observes the working state of the leakage tester under stable pressure, and automatically adjusts the pressure to avoid secondary damage to the anastomosis; uses the airbag 11 to inflate to provide positive pressure gas, and is highly convenient to operate. The mercury suction piece 9 with good sealing effect and the gas injection valve connector 10 are used to achieve one-way flow of gas, which can effectively improve the test effect.

[0056] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A leak tester, include: ventilator; A vent pipe seat, the vent pipe seat includes a connecting pipe arranged at the end, the connecting pipe is connected to the vent pipe; A vent pipe seat cover, the vent pipe seat cover is installed on the top surface of the vent pipe seat; It is characterized in that it also includes a bracket seat, which is installed in the ventilation pipe seat; The vent pipe comprises a pipe body and a sphere; The top surface of the vent pipe seat cover is connected with a main pipe for one-way air intake and a branch pipe for pressure relief and air stopping; The pressure gauge is installed on the mounting hole on the side of the main pipe; The top of the main pipe is connected with an air injection valve joint, the main pipe is connected to the air bag through the air injection valve joint, a pressure plate is installed in the air injection valve joint, a mercury suction sheet arranged on the end surface of the through hole is installed on the pressure plate, an air intake valve seat is installed on the top of the air bag, and a one-way air intake valve is installed on the air intake valve seat; A pressure relief valve is installed inside the branch pipe, and a gland is installed on the top surface of the branch pipe; The pressure relief valve comprises a pressure relief valve stem, the top of which is connected to a compression spring; a scale is arranged on the side of the pressure relief valve stem, and a color indication area corresponding to different scales is arranged on the side of the branch pipe; The pressure relief valve stem forms a tapered pressure relief channel inside the branch pipe, and excess gas is discharged from the intestinal cavity from the side of the branch pipe along the pressure relief channel.

2. The leak tester according to claim 1, It is characterized in that The outer periphery of the vent pipe seat cover is provided with a first seal, and the vent pipe seat, the bracket seat and the vent pipe seat cover are assembled as a whole through the first seal; the outer periphery of the main pipe is provided with a second seal, and the vent pipe seat cover and the injection valve connector are assembled as a whole through the second seal.

3. The leak tester according to claim 1, It is characterized in that The outer periphery of the top of the ventilation pipe is sleeved with a mounting piece, the top surface of the mounting piece is provided with a positioning convex block, and the inner wall surface of the connecting pipe is provided with a positioning groove matched with the positioning convex block.

4. The leak tester according to claim 1, It is characterized in that Buckles connected to the branch pipes are arranged at intervals on the side surfaces of the gland.

5. The leak tester according to any one of claims 1 to 4, It is characterized in that The connection mode between the ventilation pipe and the ventilation pipe seat is set to be detachable.

6. The leak tester according to any one of claims 1 to 4, It is characterized in that The side of the sphere is provided with air holes, and the air holes are arranged at the front end, middle part or rear end of the ventilation pipe; the shape of the air holes is set to be circular or elliptical, and there are one or more air holes.

7. The leak tester according to any one of claims 1 to 4, It is characterized in that The aperture of the tube body is set to 15-22 mm, and the aperture of the connecting tube is set to 17-30 mm.

8. The leak tester according to any one of claims 1 to 4, It is characterized in that The pressure relief valve is configured as a needle valve type.

9. The leak tester according to claim 8, It is characterized in that The side of the sphere is provided with air holes, and the air holes are arranged at the front end, middle part or rear end of the ventilation pipe; the shape of the air holes is set to be circular or elliptical, and there are one or more air holes.

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