Multifunctional outer sleeve for colonoscopy

Abstract

The invention relates to the field of medical instruments, in particular to a multifunctional outer sleeve for colonoscopy. Comprising an inner sleeve and a balloon, the balloon is installed on the upper portion of the outer side of the inner sleeve, and the balloon comprises an expansion part; the inner sleeve comprises two cavities, namely a main cavity and an inflation cavity; a one-way valve is arranged at the bottom of the main cavity and used for being inserted into the colonoscope, and one-way sealing is achieved when the colonoscope is pulled out. The inflating cavity is communicated with the balloon through the communicating port and is used for inflating and deflating the balloon; a balloon inflation tube is further arranged and connected with the inflation cavity. The three pain points of pain, gas leakage and out-of-control intestinal pressure in traditional colonoscopy are effectively solved, and the comfort level of a patient, the examination safety and the operation efficiency are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of medical devices, specifically to a multifunctional outer cannula for colonoscopy. Background Technology

[0002] In the clinical examination of colon diseases, the most commonly used examination method is colonoscopy, which plays an important role, especially in the early diagnosis of colon cancer. Colonoscopy can meet the examination needs of almost the entire colon area. Nowadays, most colonoscopies involve inserting a speculum into the human intestinal lumen through the anus.

[0003] Current colonoscopy methods have the following drawbacks: 1) Because the colonoscope diameter is over 12mm, which is relatively large relative to the anus, and the colonoscope is constantly being inserted and withdrawn from the anus during the examination, it causes significant pain for patients, especially those with perianal diseases. 2) Anesthesia-induced relaxation of the anal sphincter causes continuous leakage of the gas injected into the colon to inflate it, requiring constant replenishment of gas. Additionally, some intestinal residue may be expelled with the gas. 3) The gas pressure within the intestine is difficult to control. Excessive pressure can lead to over-distension of the intestine, causing adverse consequences. Conversely, insufficient pressure can cause intestinal collapse, hindering the full unfolding of the mucosa and making observation difficult. Summary of the Invention

[0004] The purpose of this invention is to provide a multifunctional outer cannula for colonoscopy, addressing the problems existing in the prior art. This device allows the colonoscope to slide within the cannula, eliminating relative friction between the colonoscope and the anorectal mucosa, effectively reducing pain for patients, especially those with hemorrhoids, during colonoscopy. Furthermore, its unique structural design prevents the expulsion of gas from the intestines due to relaxation of the anal sphincter even under anesthesia. It also allows for control of the gas pressure within the intestines within a set range, avoiding both excessively high and low pressure levels.

[0005] A multifunctional outer cannula for colonoscopy includes an inner sleeve and a balloon, the balloon being mounted on the upper outer side of the inner sleeve, the balloon including an inflatable portion;

[0006] The inner sleeve includes two cavities: a main cavity and an inflation cavity. The bottom of the main cavity has a one-way valve for inserting the colonoscope and for sealing it one-way when the colonoscope is removed. The inflation cavity is connected to the balloon through a connecting port for inflating and deflating the balloon.

[0007] It also has a balloon inflation tube connected to the inflation chamber.

[0008] Preferably, the inner sleeve further includes a pressure relief chamber; the top of the pressure relief chamber is an air inlet for communicating with the gas in the intestine; it also includes a pressure relief pipe connected to the pressure relief chamber, and on the other side of the pressure relief pipe, a pressure relief valve is provided for releasing pressure when the pressure in the pressure relief chamber is greater than a preset pressure.

[0009] Preferably, the balloon is made of transparent material, and the outer wall of the inner sleeve is provided with scale markings.

[0010] Preferably, an anti-slip handle is also installed on the inner sleeve.

[0011] Preferably, the pressure relief valve includes a pressure relief cover and a pressure relief cylinder. The pressure relief cover is fitted onto the outside of the pressure relief cylinder in a relatively adjustable manner. An air inlet pipe is provided at the front end of the pressure relief cylinder for communication with the pressure relief pipe. An exhaust port is also provided on the pressure relief cylinder, and a sliding piston is provided inside the pressure relief cylinder. A spring is provided between the sliding piston and the pressure relief cover for providing a force for the sliding piston to move forward. A pressure relief port is also provided on the sliding piston. When the sliding piston moves to the rear end, the pressure relief port enters the pressure relief cylinder from the air inlet pipe, and the air inlet pipe communicates with the exhaust port to exhaust air.

[0012] Preferably, the pressure relief cover and the pressure relief cylinder are connected by threads.

[0013] Beneficial effects:

[0014] 1) Alleviating patient suffering and preventing gas leaks:

[0015] By inflating a balloon at the upper outer part of the inner cannula, the colonoscope effectively seals the rectal and anal segment when inflated. This design allows the colonoscope to slide within the cannula, avoiding direct friction between the endoscope and the anal and rectal mucosa, significantly reducing pain for patients (especially those with hemorrhoids or other perianal diseases). Simultaneously, the balloon's sealing effect prevents intestinal gas leakage due to anal sphincter relaxation under anesthesia, maintaining intestinal distension.

[0016] 2) Precise control of intestinal pressure:

[0017] An innovative pressure relief system was designed, comprising an air inlet, a pressure relief chamber, and an adjustable pressure relief valve. The pressure relief valve, via spring preload and a movable sliding piston structure (such as a rotating pressure relief cap to adjust a preset pressure threshold), automatically opens to release air when the intestinal pressure exceeds a set value and automatically closes when the pressure is too low. This ensures that the intestinal pressure remains stable within a safe and effective range, avoiding both the risk of excessive intestinal distension caused by excessive pressure and the risk of intestinal wall collapse caused by excessively low pressure, facilitating full mucosal expansion for easy observation.

[0018] 3) Improve ease of use and safety:

[0019] One-way valve design: The one-way valve at the bottom of the main body allows for smooth insertion of the colonoscope and automatically seals upon withdrawal to prevent backflow of contaminants.

[0020] Visualization and positioning assistance: The transparent balloon facilitates observation of surrounding tissues, and the scale markings on the outer wall of the inner sleeve help doctors accurately determine the insertion depth.

[0021] Ergonomic optimization: The anti-slip handle design enhances stability and control during operation.

[0022] In summary, this device, through its balloon sealing, intelligent pressure relief, and user-friendly structural design, effectively addresses the three major pain points of traditional colonoscopy: pain, gas leakage, and uncontrolled intestinal pressure, significantly improving patient comfort, examination safety, and operational efficiency. Attached Figure Description

[0023] Figure 1 This is a structural diagram of the present invention;

[0024] Figure 2 This is a half-sectional view of the present invention;

[0025] Figure 3 This is a side sectional view of the present invention;

[0026] Figure 4 for Figure 2 A magnified view of a portion of the image;

[0027] Figure 5 To conceal the inner sleeve of the airbag;

[0028] Figure 6 This is a structural diagram of the pressure relief valve in this invention;

[0029] Figure 7 This is a half-sectional view of the pressure relief valve in this invention;

[0030] Reference numerals: 1-Inner sleeve, 11-Anti-slip handle, 12-Balloon inflation tube, 13-Pressure relief tube, 14-Inlet, 15-Pressure relief valve, 151-Pressure relief cap, 152-Pressure relief cylinder, 153-Exhaust port, 154-Inlet tube, 155-Spring, 156-Sliding piston, 157-Pressure relief port, 16-Pressure relief chamber, 17-Inflation chamber, 171-Connecting port, 18-One-way valve, 19-Graduation mark, 2-Balloon, 21-Inflation section, 22-Balloon body. Detailed Implementation

[0031] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0032] like Figures 1 to 7 As shown, a multifunctional outer cannula for colonoscopy includes an inner sleeve 1 and a balloon 2. The balloon 2 is installed on the upper outer side of the inner sleeve 1, and the balloon 2 includes an enlarged portion 21 and a body portion 22.

[0033] The inner sleeve 1 includes three cavities: a pressure relief cavity 16, a main cavity, and an inflation cavity 17. The bottom of the main cavity is a one-way valve 18, used for inserting the colonoscope and for sealing it one-way when the colonoscope is removed. The top of the pressure relief cavity 16 is an air inlet 14, used to communicate with the gas inside the intestine. The inflation cavity 17 is connected to the balloon 2 through a connecting port 171, used for inflating and deflating the balloon 2.

[0034] It also includes a balloon inflation tube 12 connected to the inflation chamber 17, and a pressure relief tube 13 connected to the pressure relief chamber 16; on the other side of the pressure relief tube 13, there is a pressure relief valve 15, which is used to relieve pressure when the pressure in the pressure relief chamber 16 is greater than the preset pressure; the preset pressure of the pressure relief valve 15 can be adjusted as needed.

[0035] In a further embodiment, the balloon 2 is made of transparent material, and the outer wall of the inner sleeve 1 is provided with scale markings 19 for easy observation of the insertion depth; a non-slip handle 11 is also installed on the inner sleeve 1 for easy operation by the user.

[0036] Specifically, in this embodiment, the pressure relief valve 15 includes a pressure relief cover 151 and a pressure relief cylinder 152. The pressure relief cover 151 is sleeved on the outside of the pressure relief cylinder 152 in a relatively adjustable manner. Specifically, the pressure relief cover 151 and the pressure relief cylinder 152 are connected by threads. An air inlet pipe 154 is provided at the front end of the pressure relief cylinder 152 for communicating with the pressure relief pipe 13. An exhaust port 153 is also provided on the pressure relief cylinder 152. A sliding piston 156 is provided inside the pressure relief cylinder 152. A spring 155 is provided between the sliding piston 156 and the pressure relief cover 151 for providing a force for the sliding piston 156 to move forward. A pressure relief port 157 is also provided on the sliding piston 156. When the sliding piston 156 moves to the rear end, the pressure relief port 157 enters the pressure relief cylinder 152 from the air inlet pipe 154, and the air inlet pipe 154 communicates with the exhaust port 153 to exhaust air.

[0037] In actual use, air is pumped out through the balloon inflation tube 12. After the air in the balloon 2 is completely pumped out, the multi-functional colonoscopy cannula is inserted into the anus to a suitable depth. During this process, the insertion depth is determined by the scale marking 19.

[0038] Inflation is then performed through the balloon inflation tube 12, completely sealing the rectal and anal segment. The colonoscope is then inserted through the one-way valve 18 in the main chamber. The preset pressure is adjusted by rotating the pressure relief cap 151. When the intestinal gas pressure exceeds the preset pressure, the sliding piston 156 slides backward, and the pressure relief port 157 enters the pressure relief cylinder 152 from the air inlet tube 154. Gas enters from the inlet port 14 and exits from the outlet port 153. When the intestinal gas pressure is lower than the preset pressure, the pressure relief port 157 is inside the air inlet tube 154, and the pressure relief chamber 16 is sealed. After the examination, the colonoscope is withdrawn, and air is aspirated through the balloon inflation tube 12. Once all the gas in the balloon 2 has been removed, the multi-functional outer cannula for colonoscopy is pulled out.

[0039] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A multifunctional outer cannula for colonoscopy, characterized in that, It includes an inner sleeve and a balloon, the balloon being installed on the upper outer side of the inner sleeve, and the balloon including an inflatable portion; The inner sleeve includes two cavities: a main cavity and an inflation cavity. The bottom of the main cavity has a one-way valve for inserting the colonoscope and for sealing it one-way when the colonoscope is removed. The inflation cavity is connected to the balloon through a connecting port for inflating and deflating the balloon. It also has a balloon inflation tube connected to the inflation chamber.

2. The multifunctional outer cannula for colonoscopy according to claim 1, characterized in that, The inner sleeve also includes a pressure relief chamber; the top of the pressure relief chamber is an air inlet for communicating with the gas in the intestine; it also includes a pressure relief pipe connected to the pressure relief chamber, and a pressure relief valve is provided on the other side of the pressure relief pipe for releasing pressure when the pressure in the pressure relief chamber is greater than a preset pressure.

3. The multifunctional outer cannula for colonoscopy according to claim 1, characterized in that, The balloon is made of transparent material, and the outer wall of the inner sleeve is marked with scale marks.

4. The multifunctional outer cannula for colonoscopy according to claim 1, characterized in that, A non-slip handle is also installed on the inner sleeve.

5. A multifunctional outer cannula for colonoscopy according to claim 1, characterized in that, The pressure relief valve includes a pressure relief cover and a pressure relief cylinder. The pressure relief cover is fitted onto the outside of the pressure relief cylinder in an adjustable manner. An air inlet pipe is provided at the front end of the pressure relief cylinder for communication with the pressure relief pipe. An exhaust port is also provided on the pressure relief cylinder. A sliding piston is provided inside the pressure relief cylinder. A spring is provided between the sliding piston and the pressure relief cover for providing a force to move the sliding piston forward. A pressure relief port is also provided on the sliding piston. When the sliding piston moves to the rear end, the pressure relief port enters the pressure relief cylinder from the air inlet pipe, and the air inlet pipe communicates with the exhaust port to exhaust air.

6. A multifunctional outer cannula for colonoscopy according to claim 5, characterized in that, The pressure relief cover and the pressure relief cylinder are connected by threads.

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