Bile-preserving cannula and method of use thereof

Abstract

The present invention relates to the technical field of medical devices, specifically to a bile-preserving cannula and a method of using the same. A front baffle and a front balloon are sequentially arranged on the front section of the cannula from left to right, the front baffle is located on the left side of the front balloon and is close to it, the front balloon is connected to one end of the front inflation tube, and the other end of the front inflation tube is provided with a front one-way valve, a middle balloon and a middle baffle are sequentially arranged on the middle section of the cannula from left to right, the middle baffle is located on the right side of the middle balloon and is close to it, the middle balloon is connected to one end of the middle inflation tube, and the other end of the middle inflation tube is provided with a middle one-way valve, the right end of the middle section of the cannula is provided with a middle connector, and the left end of the rear section of the cannula is provided with an embedding port. Compared with the prior art, the present invention effectively fixes the current position and stability of the balloon, and can effectively collect contaminated liquid into the thin film of the rear section. The present invention can effectively improve the quality and efficiency of surgery and has great application prospects.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, in particular to a bile-preserving cannula and a method for using the same. Background Art

[0002] With the development of modern medicine, minimally invasive surgery has become the development direction of surgical operations. Minimally invasive surgery has the characteristics of less trauma, faster recovery and less pain. It is the common goal and direction pursued by modern medicine. In minimally invasive gallbladder surgery, in order to protect the gallbladder, the gallbladder needs to be fixed during the operation, and usually a cannula is needed to clamp the gallbladder.

[0003] In the prior art, a rigid double cannula is generally used, and the gallbladder is clamped by the balloons on the inner and outer double cannulas. However, in actual operation, the outer wall of the gallbladder is very smooth, and the choledochoscope may move too much during the operation, resulting in poor balloon clamping effect and even fixation failure. In addition, the surgical channel in the prior art generally uses a rigid double cannula. During frequent surgical operations, force is easily transmitted to the balloon, making the balloon's clamping of the gallbladder unstable, which greatly affects the quality and efficiency of the operation.

[0004] Therefore, it is necessary to design a bile-preserving cannula and its use method. Through a simple structural design, the clamping and fixation effect of the balloon on the gallbladder can be greatly improved. At the same time, the contaminated fluid during the operation can be discharged through the cannula and collected in time, thereby improving the quality of the operation and the efficiency of the operation. Summary of the Invention

[0005] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide a bile-preserving cannula and a method of use thereof. Through a simple structural design, the clamping and fixation effect of the balloon on the gallbladder can be greatly improved. At the same time, the contaminated fluid during the operation can be discharged through the cannula and collected in time, thereby improving the quality of the operation and the efficiency of the operation.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a bile-preserving cannula and a method for using the same, comprising a cannula front section, a cannula middle section, a cannula rear section, a cannula front section balloon, a front section baffle, an external thread, a front section inflation tube, a front section one-way valve, a middle section balloon, a middle section baffle, an internal thread, a middle section inflation tube, a middle section one-way valve, a middle section connector, a groove, a medical film, a bump and a suction tube. The front section baffle and the front section balloon are sequentially arranged on the front section of the cannula from left to right. The front section baffle is located on the left side of the front section balloon and is close to it. The front section balloon is connected to one end of the front section inflation tube, and the other end of the front section inflation tube is provided with a A front-section one-way valve is provided, and a middle-section balloon and a middle-section baffle are provided on the middle section of the sleeve from left to right in sequence. The middle-section baffle is located on the right side of the middle-section balloon and is close to it. The middle-section balloon is connected to one end of the middle-section inflation tube, and the other end of the middle-section inflation tube is provided with a middle-section one-way valve. A middle-section connector is provided at the right end of the middle section of the sleeve, and a medical film is provided on the outside of the rear section of the sleeve. The left end of the medical film is connected to the right end of the middle section of the sleeve, and the left end of the rear section of the sleeve has an embedded port. The suction tube passes through the internal cavity of the front section and the middle section of the sleeve and extends from the left end of the front section of the sleeve or is provided in the medical film.

[0007] A front baffle is respectively provided on the upper and lower parts of the front section of the sleeve, and a middle baffle is respectively provided on the upper and lower parts of the middle section of the sleeve.

[0008] The outer sides of the front baffle and the middle baffle are openable and flexibly connected.

[0009] After the front baffle is opened, the angle between the front baffle and the front section of the casing is 0 to 90 degrees, and after the middle baffle is opened, the angle between the middle section of the casing is 0 to 90 degrees.

[0010] The right end of the front section of the casing is provided with an external thread, and the left end of the middle section of the casing is provided with an internal thread.

[0011] The inner diameters of the front section of the casing and the middle section of the casing are consistent.

[0012] A groove is respectively provided on the upper and lower sides of the middle connecting piece.

[0013] A convex block is respectively arranged on the upper and lower inner walls of the embedding opening at the left end of the rear section of the sleeve.

[0014] The diameters of the anterior and middle balloons are the same.

[0015] A method for using a bile-preserving cannula comprises the following steps:

[0016] S1: Insert the right side of the front section of the casing into the left side of the middle section of the casing, so that the external thread of the front section of the casing is connected with the internal thread of the middle section of the casing;

[0017] S2: Insert the middle section connector at the right end of the middle section of the casing into the embedding opening at the left end of the rear section of the casing, and insert the protrusion on the inner wall of the embedding opening of the rear section of the casing into the groove of the middle section connector;

[0018] S3: The connected front, middle and back sections of the cannula are inserted through the puncture cannula and into the abdominal cavity from the trocar. The front section of the cannula is inserted into the opened gallbladder wall and into the gallbladder, so that the front section balloon is inside the gallbladder and the middle section balloon is outside the gallbladder.

[0019] S4: Inflate the front and middle one-way valves through a medical syringe, and inflate the front and middle balloons through the front and middle inflation tubes;

[0020] S5: Rotating the rear section of the cannula drives the middle section of the cannula to rotate. The internal thread of the middle section of the cannula gradually engages with the external thread of the front section of the cannula, bringing the front and middle section balloons closer together, thereby clamping the gallbladder.

[0021] S6: As the anterior and middle balloons inflate, they drive the anterior and middle baffles to expand, and then become fixed at an angle of 0 to 90 degrees, thereby supporting the anterior and middle balloons and further clamping the gallbladder without causing damage to the gallbladder and surrounding organs.

[0022] S7: The rear section of the cannula is removed from the rear end of the medical film, and the excess fluid in the gallbladder enters the medical film through the hollow space inside the front section and the middle section of the cannula to be collected or discharged from the body through the suction tube.

[0023] Compared with the existing technology, the present invention provides a baffle on one side of the balloon, which can drive the baffle to rise to a certain angle after the balloon is inflated, thereby supporting the balloon and effectively fixing the current position and stability of the balloon. Through the hollowness inside the front and middle sections of the cannula and the design of the suction tube, and the setting of the medical film, it can effectively prevent the original hard material from transmitting the force during the operation to the balloon and causing an unstable clamping effect. The overall structural design is simple, practical and efficient, can effectively improve the quality and efficiency of the operation, and has a large prospect for promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the balloon of the present invention in the inflated state.

[0025] Figure 2 Schematic diagram of the balloon of the present invention in an uninflated state.

[0026] Description of reference numerals:

[0027] 1 is the front section of the cannula, 2 is the middle section of the cannula, 3 is the back section of the cannula, 101 is the front section balloon, 102 is the front section baffle, 103 is the external thread, 104 is the front section inflation tube, 105 is the front section one-way valve, 201 is the middle section balloon, 202 is the middle section baffle, 203 is the internal thread, 204 is the middle section inflation tube, 205 is the middle section one-way valve, 206 is the middle section connector, 207 is the groove, 301 is the medical film, 302 is the bump, and 303 is the suction tube. DETAILED DESCRIPTION

[0028] The present invention will now be further described with reference to the accompanying drawings.

[0029] See also Figure 1 and Figure 2 The present invention provides a bile-preserving cannula and a method for using the same, comprising a cannula front section 1, a cannula middle section 2, a cannula rear section 3, a front section balloon 101, a front section baffle 102, an external thread 103, a front section inflation tube 104, a front section one-way valve 105, a middle section balloon 201, a middle section baffle 202, an internal thread 203, a middle section inflation tube 204, a middle section one-way valve 205, a middle section connector 206, a groove 207, a medical film 301, and a bump 302. The front section baffle 102 and the front section balloon 101 are sequentially arranged on the cannula front section 1 from left to right, the front section baffle 102 is located on the left side of the front section balloon 101 and is close to it, the front section balloon 101 is connected to one end of the front section inflation tube 104, and the other end of the front section inflation tube 104 is connected to the front section balloon 101. A front section one-way valve 105 is provided at one end, and a middle section balloon 201 and a middle section baffle 202 are provided on the middle section 2 of the sleeve from left to right. The middle section baffle 202 is located on the right side of the middle section balloon 201 and is close to it. The middle section balloon 201 is connected to one end of the middle section inflation tube 204, and the other end of the middle section inflation tube 204 is provided with a middle section one-way valve 205. A middle section connector 206 is provided at the right end of the middle section 2 of the sleeve, and a medical film 301 is provided on the outside of the rear section 3 of the sleeve. The left end of the medical film 301 is connected to the right end of the middle section 2 of the sleeve, and the left end of the rear section 3 of the sleeve has an embedded port. The suction tube 303 passes through the internal cavity of the front section 1 and the middle section 2 of the sleeve and extends from the left end of the front section 1 of the sleeve or is provided in the medical film 301.

[0030] A front baffle 102 is provided on the upper and lower parts of the front section 1 of the casing, and a middle baffle 202 is provided on the upper and lower parts of the middle section 2 of the casing.

[0031] The outer sides of the front baffle 102 and the middle baffle 202 are openably and flexibly connected.

[0032] When the front baffle 102 is opened, the angle between it and the front section 1 of the casing is 0 to 90 degrees. When the middle baffle 202 is opened, the angle between it and the middle section 2 of the casing is 0 to 90 degrees.

[0033] The right end of the front section 1 of the casing is provided with an external thread, and the left end of the middle section 2 of the casing is provided with an internal thread.

[0034] The inner diameters of the casing front section 1 and the casing middle section 2 are consistent.

[0035] A groove is provided on each of the upper and lower sides of the middle connecting piece 206 .

[0036] A protrusion 302 is provided on the upper and lower inner walls of the embedding opening at the left end of the rear section 3 of the sleeve.

[0037] The diameters of the front balloon 101 and the middle balloon 201 are the same.

[0038] A method for using a bile-preserving cannula is characterized by comprising the following steps:

[0039] S1: Insert the right side of the casing front section 1 into the left side of the casing middle section 2, so that the external thread 103 of the casing front section 1 is connected with the internal thread of the casing middle section 2;

[0040] S2: Insert the middle section connector 206 at the right end of the middle section 2 of the casing into the insertion opening at the left end of the rear section 3 of the casing, and insert the protrusion 302 on the inner wall of the insertion opening of the rear section 3 of the casing into the groove of the middle section connector 206;

[0041] S3: The connected cannula front section 1, cannula middle section 2, and cannula rear section 3 are inserted into the abdominal cavity through the puncture cannula from the trocar. The cannula front section 1 is inserted into the opened gallbladder wall and into the gallbladder, so that the front section balloon 101 is inside the gallbladder and the middle section balloon 201 is outside the gallbladder.

[0042] S4: Inflate the front one-way valve 105 and the middle one-way valve 205 through a medical syringe, and inflate the front balloon 101 and the middle balloon 201 through the front inflation tube 104 and the middle inflation tube 204;

[0043] S5: Rotating the rear section 3 of the cannula drives the middle section 2 of the cannula to rotate, and the internal thread of the middle section 2 of the cannula gradually engages with the external thread of the front section 1 of the cannula, so that the front section balloon 101 and the middle section balloon 201 are brought closer, thereby clamping the gallbladder;

[0044] S6: As the front balloon 101 and the middle balloon 201 are inflated, the front baffle 102 and the middle baffle 202 are expanded, and then fixed at an angle of 0 to 90 degrees, thereby supporting the front balloon 101 and the middle balloon 201, and further clamping the gallbladder without causing damage to the gallbladder and the surrounding body;

[0045] S7: Remove the rear section 3 of the cannula from the rear section of the medical film 301. The excess fluid in the gallbladder enters the medical film 301 through the hollow space inside the front section 1 and the middle section 2 of the cannula to complete the collection. The excess fluid during the operation can also be sucked out of the body through the suction tube 303. The soft medical film 301 can prevent frequent movements from transmitting force to the balloon and affecting the effect of clamping the gallbladder.

[0046] The present invention does not require high assembly process during assembly and use, and the entire mechanism can be easily assembled in a very short time to meet normal use requirements. In actual use, without excessive debugging, the right side of the sleeve front section 1 is inserted into the left side of the sleeve middle section 2, so that the external thread 103 of the sleeve front section 1 is connected with the internal thread of the sleeve middle section 2, and the middle section connector 206 at the right end of the sleeve middle section 2 is inserted into the embedding opening at the left end of the sleeve rear section 3, and the protrusion 302 on the inner wall of the embedding opening of the sleeve rear section 3 is inserted into the groove of the middle section connector 206. The connected sleeve front section 1, sleeve middle section 2 and sleeve rear section 3 are inserted through the puncture sleeve, and then the sleeve is removed from the Troca r is inserted into the abdominal cavity, and the front section 1 of the cannula is inserted into the opened gallbladder wall and enters the gallbladder, so that the front section balloon 101 is inside the gallbladder and the middle section balloon 201 is outside the gallbladder. The front section one-way valve 105 and the middle section one-way valve 205 are inflated through the front section inflation tube 104 and the middle section inflation tube 204, and the rear section 3 of the cannula is rotated to drive the middle section 2 of the cannula to rotate, and the internal thread of the middle section 2 gradually engages with the external thread of the front section 1 of the cannula, so that The front balloon 101 and the middle balloon 201 are brought close to each other, thereby clamping the gallbladder. As the front balloon 101 and the middle balloon 201 are inflated, the front baffle 102 and the middle baffle 202 are expanded, and can be fixed at any angle within 0 to 90 degrees, thereby supporting the front balloon 101 and the middle balloon 201, thereby further clamping the gallbladder without causing damage to the gallbladder and the surrounding body. The rear section 3 of the cannula is removed from the rear section of the medical film 301, and the entire gallbladder-preserving cannula is installed, providing protection for minimally invasive surgery. The contaminated liquid in the gallbladder enters the medical film 301 through the hollow space inside the front section 1 and the middle section 2 of the cannula for collection. The soft medical film 301 can prevent frequent movements from transmitting force to the balloon and affecting the effect of clamping the gallbladder. At the same time, the contaminated liquid in the patient's body during the operation can be discharged through the suction tube 303 to avoid contamination of the patient's body and the operating table during subsequent flushing.

[0047] The present invention has a simple structure, is easy to install, and is low-cost. Through its unique structural design, it solves the problem in existing minimally invasive gallbladder surgery that the gallbladder wall is smooth, and the gallbladder-preserving cannula is repeatedly displaced when used in combination with a choledochoscope, resulting in an inaccurate clamping effect between the gallbladder-preserving cannula and the gallbladder wall, making it impossible to create a stable and closed space in the gallbladder. Compared with previous patents, this patent adds baffles on both sides of the airbag, and changes the tail of the gallbladder-preserving cannula into a soft film, which reduces the fixing strength between the head end and the gallbladder wall during the operation, strengthens the device for continuous drainage during the operation, and allows the timely and effective removal of excess fluid generated during the operation, thereby improving surgical efficiency and quality, and has good application prospects.

Claims

1. A bile-preserving cannula, characterized by: The invention comprises a front section of the cannula (1), a middle section of the cannula (2), a rear section of the cannula (3), a front section balloon (101), a front section baffle (102), an external thread (103), a front section inflation tube (104), a front section one-way valve (105), a middle section balloon (201), a middle section baffle (202), an internal thread (203), a middle section inflation tube (204), a middle section one-way valve (205), a middle section connector (206), a groove (20 7), a medical film (301), a bump (302) and a suction tube (303), a front baffle (102) and a front balloon (101) are sequentially arranged on the front section (1) of the cannula from left to right, the front baffle (102) is located on the left side of the front balloon (101) and is close to it, the front balloon (101) is connected to one end of the front inflation tube (104), and the other end of the front inflation tube (104) is provided with a front The middle section (2) of the sleeve is provided with a middle section balloon (201) and a middle section baffle (202) from left to right, the middle section baffle (202) is located on the right side of the middle section balloon (201) and is close to the middle section balloon (201), the middle section balloon (201) is connected to one end of the middle section inflation tube (204), and the other end of the middle section inflation tube (204) is provided with a middle section one-way valve (205), the middle section (2) of the sleeve is provided with a middle section balloon (201) and a middle section baffle (202), and the middle section balloon (201) is connected to one end of the middle section inflation tube (204), and the other end of the middle section inflation tube (204) is provided with a middle section one-way valve (205). The right end of the sleeve is provided with a middle section connector (206), the outside of the sleeve rear section (3) is provided with a medical film (301), the left end of the medical film (301) is connected to the right end of the sleeve middle section (2), the left end of the sleeve rear section (3) has an embedding port, and the suction tube (303) passes through the internal cavity of the sleeve front section (1) and the sleeve middle section (2) and extends from the left end of the sleeve front section (1) or is provided in the medical film (301).

2. The bile-preserving cannula according to claim 1, characterized in that: The front section (1) of the sleeve is provided with a front section baffle (102) at the top and bottom, respectively, and the middle section (2) of the sleeve is provided with a middle section baffle (202) at the top and bottom.

3. The bile-preserving cannula according to claim 2, characterized in that: The outer sides of the front baffle (102) and the middle baffle (202) are openably and flexibly connected.

4. The bile-preserving cannula according to claim 3, characterized in that: When the front baffle (102) is opened, the angle between it and the front section (1) of the sleeve is 0 to 90 degrees, and when the middle baffle (202) is opened, the angle between it and the middle section (2) of the sleeve is 0 to 90 degrees.

5. The bile-preserving cannula according to claim 1, characterized in that: The right end of the front section (1) of the sleeve is provided with an external thread, and the left end of the middle section (2) of the sleeve is provided with an internal thread.

6. The bile-preserving cannula according to claim 1, characterized in that: The inner diameters of the sleeve front section (1) and the sleeve middle section (2) are consistent.

7. The bile-preserving cannula according to claim 1, characterized in that: A groove is provided on each of the upper and lower sides of the middle section connecting piece (206).

8. The bile-preserving cannula according to claim 1, characterized in that: A protrusion (302) is provided on the upper and lower inner walls of the embedding opening at the left end of the sleeve rear section (3).

9. The bile-preserving cannula according to claim 1, characterized in that: The diameters of the front section balloon (101) and the middle section balloon (201) are consistent.

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