A spray tube for ESD surgery

Abstract

The present invention relates to the technical field of medical equipment, specifically to a spray tube for ESD surgery, wherein the handle of the spray tube is composed of a high-pressure air sealing tube, a sealing cover is provided on the high-pressure air sealing tube, a through hole is provided in the center of the sealing cover, the high-pressure air sealing tube is connected to an observation tube through the through hole, the observation tube is connected to a catheter, and a front end portion is provided at the end of the catheter. The present invention reduces the use of injection tubes and reduces drug waste by sealing a methylene blue solution in a catheter and injecting it through regulated air pressure, thereby simplifying the methylene blue spraying operation in ESD surgery and saving operation time.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, in particular to a spray tube for ESD surgery. Background Art

[0002] At present, endoscopic submucosal dissection, or ESD, is a standard minimally invasive treatment for precancerous lesions and early cancers of the digestive tract. The operation process first determines the location of the lesion, then stains it, uses a needle-type incision knife to circle the lesion to make a mark, then uses a needle-type incision knife to open the opening, and uses an IT knife to perform incision and dissection. If bleeding occurs during the operation, electrocoagulation treatment can be performed with an IT knife, TT knife, or hot biopsy forceps. After the operation, the complete specimen is sent directly to the pathology department for pathological examination.

[0003] Compared with traditional laparotomy, it has the following advantages: first, it can remove a large range of lesions at one time, and because it is a minimally invasive treatment, it causes less pain to the patient; in addition, it can obtain relatively complete specimens, which are helpful for pathologists to exclude lesions, such as metastasis, which is the most concerned aspect, thus reducing the local residual rate and recurrence rate of tumors. Currently, ESD surgery has been widely used in endoscopic treatment of early digestive tract cancers such as early esophageal cancer, early gastric cancer, early intestinal cancer, and early duodenal cancer.

[0004] However, in ESD surgery, it is generally necessary to spray methylene blue on the surgical site to achieve staining and marking of the surgical site. The current clinical method is to use a disposable liquid delivery spray tube connected to an external syringe to inject methylene blue. This will first cause a certain amount of methylene blue to be wasted in the tube; it will also waste external syringes and other medical resources; in addition, the additional use of an external injection tube and spray tube to achieve the injection of methylene blue is more cumbersome to operate; in view of this, the present invention proposes a spray tube for ESD surgery to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a spray tube for ESD surgery to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A spray tube for ESD surgery, wherein the handle of the spray tube is composed of a high-pressure air sealing tube, a sealing cover is provided on the high-pressure air sealing tube, a through hole is provided in the center of the sealing cover, the high-pressure air sealing tube is connected to an observation tube through the through hole, the observation tube is connected to a catheter, and a front end portion is provided at the end of the catheter; a release button is provided on the sealing cover, the bottom side of the release button seals the through hole through a baffle, the bottom baffle of the release button and the channel wall moving up and down inside the sealing cover are both frosted, a spring is provided at the bottom of the bottom baffle of the release button, a release channel smaller than the diameter of the through hole is provided on the baffle on the bottom side of the release button, and the release channel and the axis of the through hole are staggered by a distance of the through hole diameter; a PTFE membrane is provided at the connection between the observation tube and the through hole, and a PTFE membrane is also provided at the observation tube and the catheter, the width of the observation tube is greater than 1.5 times the diameter of the catheter, the observation tube is filled with distilled water, a bubble is provided in the distilled water area, and the size of the bubble does not exceed one third of the inner volume of the observation tube.

[0008] Furthermore, the front end part includes a needle cover, a needle is arranged inside the needle cover, the inner end of the needle is in the shape of a spike, the needle is clamped in the middle of the needle pendant, a polyethylene film is provided at the end of the catheter, a mortise and tenon is provided on the outside of the polyethylene film, the needle pendant and the mortise and tenon are clamped, and the length of the puncture section inside the needle is equal to the depth of the mortise and tenon.

[0009] Furthermore, a PTFE membrane is provided at the connection between the catheter and the observation tube, and a methylene blue solution is sealed between the PTFE membrane and the polyethylene membrane in the catheter.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention seals the methylene blue solution in the catheter and promotes the injection through adjustable air pressure, thereby reducing the use of injection tubes and the waste caused by the residue of drugs in the catheter, and simplifies the methylene blue spraying operation in ESD surgery, reduces the medical equipment that needs to be prepared, and saves operation time; the design and production process is simple, and the use is safe and easy, which is suitable for clinical promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A cross-sectional view of the overall structure of the present invention;

[0012] Figure 2 It is the appearance diagram of the overall structure of the present invention;

[0013] Figure 3 It is a structural detail diagram of the front end part of the present invention;

[0014] Figure 4 It is a structural detail diagram of the observation tube part in the present invention;

[0015] Figure 5This is a structural detail diagram of the sealing cover part of the present invention.

[0016] In the figure: 1. high-pressure air sealing tube; 11. sealing cover; 12. release button; 13. release channel; 14. spring; 15. through hole; 2. observation tube; 21. distilled water; 22. air bubble; 3. catheter; 31. methylene blue solution; 4. front end part; 41. needle cover; 42. needle; 43. needle pendant; 44. mortise and tenon; 5. PTFE membrane; 6. polyethylene membrane. DETAILED DESCRIPTION

[0017] 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.

[0018] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0019] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0020] See also Figure 1-5 , the present invention provides a technical solution:

[0021] A spray tube for ESD surgery, the handle of the spray tube is composed of a high-pressure air sealing tube 1, a sealing cover 11 is provided on the high-pressure air sealing tube 1, a through hole 15 is provided in the center of the sealing cover 11, the high-pressure air sealing tube 1 is connected to an observation tube 2 through the through hole 15, the observation tube 2 is connected to a catheter 3, and a front end portion 4 is provided at the end of the catheter 3; a release button 12 is provided on the sealing cover 11, and the bottom side of the release button 12 seals the through hole 15 through a baffle, the bottom baffle of the release button 12 and the channel wall of the up and down movement of the release button 12 in the sealing cover 11 are both frosted, and a spring 14 is provided at the bottom of the bottom baffle of the release button 12, and the bottom side of the release button 12 A release channel 13 with a smaller diameter than the through hole 15 is provided on the baffle, and the axes of the release channel 13 and the through hole 15 are offset from each other by a distance of the through hole 15 diameter; a PTFE membrane 5 is provided at the connection between the observation tube 2 and the through hole 15, and a PTFE membrane 5 is also provided at the observation tube 2 and the catheter 3. The width of the observation tube 2 is greater than 1.5 times the diameter of the catheter 3. The observation tube 2 is filled with distilled water 21, and a bubble 22 is provided in the area of ​​the distilled water 21. The size of the bubble 22 does not exceed one-third of the inner volume of the observation tube 2. If the bubble 22 exceeds half of the observation tube 2, the observation ability is lost. To ensure its observation ability, it should be controlled below one-third.

[0022] Specifically, the PTFE membrane 5 has the ability to pass air but isolate water molecules. Therefore, when in use, high-pressure air can pass through the PTFE membrane 5 and the observation tube 2, and the bubbles 22 will move "gurglingly", proving the normal operation of the equipment. Therefore, the observation tube 2 is used to detect the normal use ability of the equipment under this design.

[0023] The front end portion 4 includes a needle cover 41, in which a needle 42 is arranged. The inner end of the needle 42 is in the shape of a spike. The spike-shaped inner end of the needle 42 is used to pierce the polyethylene film 6 and release the medicine when in use. The needle 42 is stuck in the middle of the needle pendant 43. A polyethylene film 6 is arranged at the end of the catheter 3. A tenon 44 is arranged on the outside of the polyethylene film 6. The needle pendant 43 and the tenon 44 are clamped. The length of the puncture section on the inner side of the needle 42 is equal to the depth of the tenon 44, so that when it is desired to use it, the length of the needle 42 is sufficient to pierce the polyethylene film 6 when the needle pendant 43 is pressed.

[0024] A PTFE membrane 5 is provided at the connection between the catheter 3 and the observation tube 2 , and a methylene blue solution 31 is sealed between the PTFE membrane 5 and the polyethylene membrane 6 in the catheter 3 .

[0025] Specifically, the method of using the present design is as follows: when in use, remove the needle cover 41, press the needle pendant 43 inward to the inside of the mortise and tenon 44, and the spiked section inside the needle head 42 can pierce the polyethylene film 6. However, due to the problem of atmospheric pressure, the methylene blue solution 31 in the catheter 3 will not overflow. At this time, press the release button 12, and the baffle under the release button 12 overcomes the elastic force of the spring 14. The originally offset release channel 13 is connected with the through hole 15, so that the high-pressure gas pushes the medicine in the catheter 3 to spray out from the through hole 15 through the observation tube 2. If you want to pause, just release the release button 12.

[0026] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A spray tube for ESD surgery, characterized in that: The handle of the spray pipe is composed of a high-pressure air sealing pipe (1), a sealing cover (11) is provided on the high-pressure air sealing pipe (1), a through hole (15) is provided in the center of the sealing cover (11), the high-pressure air sealing pipe (1) is connected to the observation pipe (2) through the through hole (15), the observation pipe (2) is connected to the conduit (3), and the end of the conduit (3) is provided with a front end portion (4); a release button (12) is provided on the sealing cover (11), the bottom side of the release button (12) seals the through hole (15) through a baffle, the bottom baffle of the release button (12) and the channel wall through which it moves up and down inside the sealing cover (11) are both frosted, and the bottom baffle of the release button (12) is A spring (14) is provided at the bottom of the release button (12); a release channel (13) having a smaller diameter than the through hole (15) is provided on the baffle plate at the bottom side of the release button (12); the axis of the release channel (13) and the through hole (15) are offset from each other by a distance of the through hole (15) diameter; a PTFE membrane (5) is provided at the connection between the observation tube (2) and the through hole (15); a PTFE membrane (5) is also provided at the observation tube (2) and the conduit (3); the width of the observation tube (2) is greater than 1.5 times the diameter of the conduit (3); the observation tube (2) is filled with distilled water (21); a bubble (22) is provided in the region of the distilled water (21); the size of the bubble (22) does not exceed one third of the internal volume of the observation tube (2).

2. The spray tube for ESD surgery according to claim 1, characterized in that: The front end portion (4) comprises a needle cover (41), a needle (42) is arranged inside the needle cover (41), the inner end of the needle (42) is in the shape of a spike, the needle (42) is stuck in the middle of the needle pendant (43), a polyethylene film (6) is arranged at the end of the catheter (3), a tongue and groove (44) is arranged on the outer side of the polyethylene film (6), the needle pendant (43) and the tongue and groove (44) are clamped, and the length of the needle puncture section inside the needle (42) is equal to the depth of the tongue and groove (44).

3. The spray tube for ESD surgery according to claim 1, characterized in that: A PTFE membrane (5) is provided at the connection point between the catheter (3) and the observation tube (2), and a methylene blue solution (31) is sealed between the PTFE membrane (5) and the polyethylene membrane (6) in the catheter (3).

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