An ultrasound-guided percutaneous gallbladder puncture catheterization and stone extraction device

Abstract

The utility model discloses a kind of percutaneous gallbladder puncture tube drainage and stone extraction device under ultrasonic guidance, it is related to medical instrument technical field, including puncture needle and sleeve, sleeve includes first chamber and second chamber, umbrella-shaped expansion device is arranged in first chamber, circulation flushing device is arranged in second chamber, the rear end of second chamber is provided with one-way membrane flap, puncture needle is installed in sleeve interior, puncture needle includes puncture part and stem portion, puncture part is arranged in first chamber front end, stem portion is movably connected with umbrella-shaped expansion device, umbrella-shaped expansion device is opened and closed by front and back sliding puncture needle stem portion.The utility model is drained and stone is extracted by the passage formed by sleeve, solve the problem that gallbladder puncture tube usually only has drainage function, and cannot take stone.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an ultrasound-guided percutaneous cholecystectomy and stone removal device. Background Technology

[0002] When gallstones develop into common bile duct stones and cause blockage, it can induce life-threatening acute suppurative cholangitis. At this time, the condition is often severe, with patients frequently exhibiting signs of septic shock. Patients have poor tolerance for surgery, and the procedure carries high risks. Therefore, cholecystoscopic drainage can temporarily relieve biliary obstruction, is minimally invasive, and is generally well-tolerated by patients. Cholecystoscopic drainage involves percutaneous abdominal cholecystectomy with catheter placement to drain accumulated bile from the gallbladder, thereby alleviating biliary tract infection symptoms. Combined with aggressive fluid resuscitation and anti-infection supportive treatment, the biliary tract infection can be temporarily controlled.

[0003] While gallbladder puncture and drainage can temporarily relieve the patient's infection symptoms, it also carries risks such as bile leakage, bleeding at the puncture site, and infection. Most importantly, the bile duct stones are not removed, and there is a risk of recurrence of infection at any time. Therefore, it is necessary to actively administer anti-infection and fluid replacement while completing relevant preoperative preparations. Surgery to remove the stones should be performed after the patient's condition stabilizes. Only by removing the stones can the obstruction be truly relieved and the patient's condition be completely cured.

[0004] In the prior art, gallbladder puncture and catheter placement usually only has a drainage function and cannot remove stones. Based on this, this utility model is proposed. Utility Model Content

[0005] The present invention aims to provide an ultrasound-guided percutaneous cholecystectomy and drainage device for stone removal, in order to solve the problem that cholecystectomy and drainage usually only have drainage functions but cannot remove stones.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An ultrasound-guided percutaneous cholecystectomy and stone removal device includes a puncture needle and a cannula. The cannula includes a first chamber and a second chamber. An umbrella-shaped dilatation device is disposed in the first chamber, and a circulating flushing device is disposed in the second chamber. A one-way flap is disposed at the rear end of the second chamber. The puncture needle is installed inside the cannula and includes a puncture section and a rod section. The puncture section is disposed at the front end of the first chamber, and the rod section is movably connected to the umbrella-shaped dilatation device. The umbrella-shaped dilatation device is opened and closed by sliding the rod section of the puncture needle back and forth.

[0008] Furthermore, the umbrella-shaped expansion device includes a movable base and spreading spokes. The movable base is located at the front end of the first chamber, and the spreading spokes are located between the second chamber and the movable base. The spokes are arranged in a circle around the movable base to form the first chamber. The rear end of the movable base is provided with a first locking part, and the front end of the second chamber is provided with a second locking part. The first locking part and the second locking part are connected and fixed by a tenon and mortise joint. The movable base is sleeved on the puncture needle, and the movable base and the shank of the puncture needle are connected by a detachable tenon.

[0009] Furthermore, the tenon includes a tenon and a mortise. The tenon is set on the movable base, and the mortise is L-shaped and set on the inner wall of the movable base. The tenon is engaged in the mortise.

[0010] Furthermore, the spreader spokes are made of a flexible material.

[0011] Furthermore, the circulating flushing device includes an inlet pipe and an outlet pipe, the inlet pipe being connected to the rear end of the second chamber, and the outlet pipe being connected to the front end of the second chamber.

[0012] Furthermore, the sleeve is integrally molded.

[0013] The principle and beneficial effects of this technical solution:

[0014] This invention involves inserting a puncture needle into the gallbladder at the tip. After reaching the designated position, the needle retracts, causing the movable base to move backward. The first and second locking parts are fixed in place by a tenon-and-mortise joint, allowing the spreading spokes to open and secure the device within the patient's body. The second chamber passes through the skin to form a channel, enabling drainage or stone removal. Simultaneously, a one-way flap at the rear end of the second chamber effectively prevents bile reflux, and a circulating flushing device on the second chamber cleans the interior from back to front. This invention solves the problem that gallbladder puncture and catheter placement typically only has a drainage function and cannot remove stones. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of an ultrasound-guided percutaneous cholecystectomy and stone removal device.

[0016] Figure 2 An exploded cross-section of an ultrasound-guided percutaneous cholecystectomy and stone removal device.

[0017] Figure 3 A cross-sectional view of an ultrasound-guided percutaneous cholecystectomy and stone removal device.

[0018] Figure 4 This is a partial schematic diagram of an ultrasound-guided percutaneous cholecystectomy and stone removal device.

[0019] The reference numerals in the accompanying drawings include:

[0020] 1. Puncture needle; 101. Puncture section; 102. Rod section; 2. Cannula; 201. First chamber; 202. Second chamber; 3. Umbrella-shaped dilatation device; 301. Movable base; 302. Spreading spokes; 303. First locking part; 304. Second locking part; 4. Circulating flushing device; 401. Inlet pipe; 402. Outlet pipe; 5. One-way flap; 6. Tenon; 601. Tenon; 602. Mortise. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. Here, the illustrative embodiments and descriptions of this utility model are used to explain the present utility model, but are not intended to limit the present utility model.

[0022] It should also be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures closely related to the solution according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0023] It should be emphasized that the term "including / comprises" as used herein refers to the presence of a feature, element, or component, but does not exclude the presence or addition of one or more other features, elements, or components.

[0024] In the following description, embodiments of the present invention will be illustrated with reference to the accompanying drawings. In the drawings, the same reference numerals denote the same or similar parts.

[0025] refer to Figures 1 to 4 An ultrasound-guided percutaneous cholecystectomy and stone removal device includes a puncture needle 1 and a cannula 2. The cannula 2 includes a first chamber 201 and a second chamber 202. An umbrella-shaped dilatation device 3 is provided in the first chamber 201, and a circulating flushing device 4 is provided in the second chamber 202. A one-way flap 5 is provided at the rear end of the second chamber 202. The puncture needle 1 is installed inside the cannula 2. The puncture needle 1 includes a puncture part 101 and a rod part 102. The puncture part 101 is located at the front end of the first chamber 201, and the rod part 102 is movably connected to the umbrella-shaped dilatation device 3. The umbrella-shaped dilatation device 3 is opened and closed by sliding the rod part 102 of the puncture needle 1 back and forth.

[0026] Specifically, the puncture needle 1 is movably connected to the umbrella-shaped dilation device 3, meaning the puncture needle 1 can control the opening and closing of the umbrella-shaped dilation device 3. When the umbrella-shaped dilation device 3 is open, it can press against the patient's gallbladder, securing the device inside the patient. Simultaneously, the puncture needle 1 can disengage from the umbrella-shaped dilation device 3, allowing it to exit the first chamber 201 and the second chamber 202, leaving a channel for drainage and stone removal. The one-way flap 5 located at the rear end of the second chamber 202 effectively prevents bile leakage. It is worth noting that while the one-way flap 5 prevents bile outflow, it also allows instruments such as the puncture needle 1 to enter the cannula 2. A cross-shaped opening one-way flap 5 is provided here (see reference). Figure 4 For bile flowing out of the cannula 2, the one-way flap 5 closes. For the puncture needle 1 entering the cannula 2, the cross opening of the one-way flap 5 opens, forming a channel that can accommodate the puncture needle 1, the drainage tube and the stone removal device. The circulating flushing device 4 set on the second chamber 202 can clean the inside of the second chamber 202 and keep the inside of the chamber clean.

[0027] As one embodiment of this utility model, the umbrella-shaped expansion device 3 includes a movable base 301 and spreading spokes 302. The movable base 301 is disposed at the front end of the first chamber 201, and the spreading spokes 302 are disposed between the second chamber 202 and the movable base 301. The spokes are arranged in a circle around the movable base 301 to form the first chamber 201. The spreading spokes 302 are made of flexible material. The rear end of the movable base 301 is provided with a first locking part 303, and the front end of the second chamber 202 is provided with a second locking part 304. The first locking part 303 and the second locking part 304 form a tenon and mortise connection for fixation. The movable base 301 is sleeved on the puncture needle 1, and the movable base 301 and the rod 102 of the puncture needle 1 are connected by a detachable tenon 6. The tenon 6 includes a tenon 601 and a mortise 602. The tenon 601 is mounted on the movable base 301, and the mortise 602 is L-shaped and located on the inner wall of the movable base 301. The tenon 601 is engaged within the mortise 602. The puncture needle 1 is fixed to the movable base 301 by the engagement of the tenon 601 and the L-shaped mortise 602. Obviously, to ensure the puncture effect, the movable base 301 and the front end of the puncture part 101 of the puncture needle 1 should have the same slope. After puncturing to the predetermined position, the sleeve 2 is fixed, and then the puncture needle 1 is pulled back. Because the puncture needle 1 is engaged and fixed to the movable base 301, the puncture needle 1 drives the movable base 301 to move backward, causing the first engaging part 303 at the rear end of the movable base 301 to engage with the tenon 601. The second locking part 304 at the front end of the second chamber 202 is connected and fixed with each other by tenon and mortise. At the same time, due to the relative movement of the movable base 301, the flexible spreading spokes 302 are relatively bent, and multiple spokes bend and press against the surrounding tissues at the same time, so that the present invention is fixed in the patient's body. Finally, simply rotate the puncture needle 1 to make the tenon 601 disengage from the L-shaped mortise 602, separate the puncture needle 1 from the movable base 301, and allow the puncture needle 1 to exit the sleeve, thus leaving a channel for convenient drainage and stone removal, which is convenient for subsequent drainage and stone removal.

[0028] In one embodiment of this utility model, the circulating flushing device 4 includes an inlet pipe 401 and an outlet pipe 402. The inlet pipe 401 is connected to the rear end of the second chamber 202, and the outlet pipe 402 is connected to the front end of the second chamber 202. By injecting a cleaning solution such as saline into the inlet pipe 401, the cleaning solution cleans the second chamber 202 from back to front. Since the outlet pipe 402 is connected to the front end of the second chamber 202, the cleaning solution at the front end can be drawn out through the outlet pipe 402, thereby achieving the purpose of cleaning the sleeve 2.

[0029] The sleeve 2 of this utility model is integrally molded.

[0030] The specific implementation process is as follows:

[0031] This invention involves inserting the puncture needle 101 into the gallbladder. After reaching the designated position, the puncture needle 1 is retracted, causing the movable base 301 to move backward. The first locking part 303 and the second locking part 304 are fixed in place by a tenon-and-mortise joint, allowing the spreading spokes 302 to open and be fixed inside the patient's body. The second chamber 202 passes through the skin to form a channel, enabling drainage or stone removal. Simultaneously, the one-way flap 5 located at the rear end of the second chamber 202 effectively prevents bile reflux. The circulating flushing device 4 located on the second chamber 202 can clean the inside of the second chamber 202 from back to front. This invention solves the problem that gallbladder puncture and catheter placement usually only has a drainage function and cannot remove stones. It has certain application prospects and is worth promoting.

[0032] It should be clarified that this utility model is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific structures are described and shown as examples. However, the apparatus of this utility model is not limited to the specific structures described and shown, and those skilled in the art can make various changes, modifications, and additions after understanding the spirit of this utility model.

[0033] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. For those skilled in the art, various modifications and variations can be made to the embodiments of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for percutaneous cholecystectomy and stone removal under ultrasound guidance, characterized in that: The device includes a puncture needle (1) and a cannula (2). The cannula (2) includes a first chamber (201) and a second chamber (202). An umbrella-shaped dilator (3) is provided in the first chamber (201), and a circulating flushing device (4) is provided in the second chamber (202). A one-way flap (5) is provided at the rear end of the second chamber (202). The puncture needle (1) is installed inside the cannula (2). The puncture needle (1) includes a puncture part (101) and a rod part (102). The puncture part (101) is located at the front end of the first chamber (201), and the rod part (102) is movably connected to the umbrella-shaped dilator (3). The umbrella-shaped dilator (3) is opened and closed by sliding the rod part (102) of the puncture needle (1) back and forth.

2. The ultrasound-guided percutaneous cholecystectomy and stone removal device according to claim 1, characterized in that: The umbrella-shaped expansion device (3) includes a movable base (301) and spreading spokes (302). The movable base (301) is located at the front end of the first chamber (201). The spreading spokes (302) are located between the second chamber (202) and the movable base (301). The spokes are arranged in a circle around the movable base (301) to form the first chamber (201). The rear end of the movable base (301) is provided with a first locking part (303). The front end of the second chamber (202) is provided with a second locking part (304). The first locking part (303) and the second locking part (304) are connected and fixed by a tenon and mortise joint. The movable base (301) is sleeved on the puncture needle (1). The movable base (301) and the rod part (102) of the puncture needle (1) are connected by a detachable tenon (6).

3. The ultrasound-guided percutaneous cholecystectomy and stone removal device according to claim 2, characterized in that: The tenon (6) includes a tenon (601) and a mortise (602). The tenon (601) is set on the movable base (301), and the mortise (602) is L-shaped and set on the inner wall of the movable base (301). The tenon (601) is engaged in the mortise (602).

4. The ultrasound-guided percutaneous cholecystectomy and stone removal device according to claim 2, characterized in that: The spread spokes (302) are made of a flexible material.

5. The ultrasound-guided percutaneous cholecystectomy and stone removal device according to claim 1, characterized in that: The circulating flushing device (4) includes an inlet pipe (401) and an outlet pipe (402). The inlet pipe (401) is connected to the rear end of the second chamber (202), and the outlet pipe (402) is connected to the front end of the second chamber (202).

6. The ultrasound-guided percutaneous cholecystectomy and stone removal device according to any one of claims 1-5, characterized in that: The sleeve (2) is integrally formed.

Images