A new type of stone removal catheter

Abstract

The present invention discloses a novel blocking and stone removal catheter, comprising a controller, one end of the controller is provided with a non-slip handle, the other end is connected to the catheter through a movable tube support, the lower end is provided with a tube support tightening button, the top is provided with a tube groove, one side of the top is provided with a fixed tube support, the upper end is provided with a hydrogel storage tube, and one side is provided with a tube push knob, the hydrogel storage tube stores hydrogel, the outlet end is connected to the hydrogel delivery tube, a piston is provided inside, the other end of the hydrogel delivery tube is connected to the needle tube, the catheter is connected to the scope gap through the scope tube, connected to the hydrogel delivery tube gap through the hydrogel tube, connected to the occluder gap through the occluder tube, and connected to the laser lithotripter gap through the optical fiber tube, the occluder comprises a mesh cover deployment controller, a wrapping tube and a memory metal mesh cover, and by providing hydrogel-assisted lithotripsy, the problems of insufficient blocking force in the basket structure, the basket formed when the occluder is opened having gaps, and the inability to completely block the lithotripsy, etc. are solved.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, in particular to a novel blocking and lithotripsy catheter. Background Art

[0002] Urinary stones are one of the most common urological diseases, often occurring in the ureters, kidneys, and bladder. With the recent development of minimally invasive surgical techniques, minimally invasive treatments for urinary stones have become the mainstream approach. Ureteroscopic lithotripsy and percutaneous nephrolithotripsy are two important minimally invasive methods for treating urinary stones. Ureteroscopic lithotripsy (URL), which fragments stones through the body's natural orifices, offers the advantages of minimal invasiveness and precise stone fragmentation, making it one of the main treatments for ureteral stones. During lithotripsy, irrigation is used to maintain a clear field of view. Instruments used include electrohydraulics, ultrasound, pneumatic ballistics (PL), electrokinetic kinetics (EKL), and lasers (LL). Therefore, stones and stone fragments in the middle and upper ureters are easily flushed back into the kidney by the irrigation water flow or the recoil of the lithotripsy instruments. In the existing technology, current ureteral stone occluders are mainly blade-type or basket-type structures. Among them, the basket-type structure may have insufficient sealing force. The basket formed when the occluder is opened will have pores and cannot completely block the stones. The blade-type structure has defects such as being difficult to stick to the edge. Because the urethra is relatively narrow, after the occluder is inserted, the lithotripsy will easily get stuck or fail to be inserted through the urethra, and the trauma will be greater. Therefore, a new type of occlusion and stone removal catheter is urgently needed. Summary of the Invention

[0003] In order to solve the above-mentioned technical problems, the present invention provides a new type of stone removal catheter. The technical solution of the present invention is achieved as follows:

[0004] A new type of blocking and stone removal catheter includes a controller, one end of which is provided with a non-slip handle, the other end is connected to the catheter through a movable tube support, the lower end is provided with a tube support tightening button, the top is provided with a tube groove, one side of the top is provided with a fixed tube support, the upper end is provided with a hydrogel storage tube, and one side is provided with a tube push knob. Hydrogel is stored in the hydrogel storage tube, the outlet end is connected to the hydrogel delivery tube, and a piston is provided inside. The other end of the hydrogel delivery tube is connected to the needle tube, the catheter is connected to the scope gap through the scope tube, connected to the hydrogel delivery tube gap through the hydrogel tube, connected to the occluder gap through the occluder tube, and connected to the laser lithotripsy gap through the optical fiber tube. The occluder includes a mesh cover deployment controller, a wrapping tube and a memory metal mesh cover.

[0005] The fixed pipe bracket is connected to the controller via a pipe groove.

[0006] The tightness of the movable pipe support is controlled by a pipe support tightness button.

[0007] The hydrogel storage tube is clamped with the anti-slip handle via a sliding groove.

[0008] The hydrogel is a mixture of thickening sodium hyaluronate and a trace amount of lidocaine gel.

[0009] The memory metal mesh cover is made of nickel-titanium alloy and is located at one end of the package tube and accommodated in the package tube. The mesh cover expansion controller is arranged at the other end of the package tube.

[0010] Beneficial effects

[0011] The present invention incorporates a hydrogel-assisted lithotripsy feature, adding a hydrogel layer to the occluder's memory metal mesh. This enhances the occluding effect of the memory metal mesh, allowing it to more easily contact the ureteral wall without damaging the ureter. It also prevents smaller stones from flowing back through the memory metal mesh. This addresses the issues of insufficient occlusion force in basket-type structures, where the basket formed when the occluder is opened has gaps and cannot completely block the stones, as well as the difficulty of contacting the edges in blade-type structures. The integrated catheter eliminates the problem of the lithotripsy scope becoming stuck or unable to be inserted through the urethra after the occluder is inserted, which can be quite traumatic. The present invention also coats smaller stones with a hydrogel layer, reducing the range and speed of their subsequent dispersion when impacted during laser lithotripsy. Furthermore, the present invention is simple to use and possesses significant market value. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the present invention.

[0013] Figure 2 Schematic diagram of the catheter structure of the present invention.

[0014] Figure 3 Schematic diagram of the catheter structure of the present invention.

[0015] 1-controller; 2-anti-slip handle; 3-conduit; 4-movable pipe support; 5-pipe support tightening button; 6-pipe groove;

[0016] 7-Fixed tube holder; 8-Hydrogel storage tube; 9-Tube push knob; 10-Hydrogel; 11-Chute; 12-Hydrogel delivery tube; 13-Piston; 14-Scope tube; 15-Scope; 16-Hydrogel tube; 17-Occluder tube; 18-Occluder; 19-Fiber optic tube; 20-Laser lithotripter; 21-Pipeline; 22-Memory metal mesh cover; 23-Mesh cover deployment controller; 24-Needle tube. DETAILED DESCRIPTION

[0017] like Figure 1-3As shown, a new type of stone removal catheter for blocking is provided, including a controller, a non-slip handle is provided at one end of the controller, and the other end is connected to the catheter through a movable tube support, a tube support tightening button is provided at the lower end, and a tube groove is provided at the top. All tubular instruments that need to pass through the catheter to enter the ureter can be oriented through the tube groove, and the tube groove assists the tubular instruments to smoothly enter the catheter and then enter the ureter. A fixed tube support is provided on one side of the top, and the fixed tube support fixes the hydrogel transmission tube so that it will not swing when transporting the hydrogel. A hydrogel storage tube is provided on the upper end, and the hydrogel storage tube is movable. The length of the hydrogel transmission tube can be adjusted to make it suitable for various situations. A tube push knob is provided on one side, and the tube push button is connected to the tube groove. The tubular instrument or catheter in the apparatus is in direct contact, and the tubular instrument is moved by friction through clockwise or counterclockwise rotation. Hydrogel is stored in the hydrogel storage tube, and the outlet end is connected to the hydrogel delivery tube. A piston is provided inside the hydrogel delivery tube. The other end of the hydrogel delivery tube is connected to a needle tube, and the stones in the ureter or the memory metal mesh are coated with hydrogel through the needle tube. The catheter is connected to the gap of the scope through the scope tube, connected to the gap of the hydrogel delivery tube through the hydrogel tube, connected to the gap of the occluder through the occluder tube, and connected to the gap of the laser lithotripter through the optical fiber tube. The occluder includes a mesh expansion controller, a wrapping tube and a memory metal mesh. The occluder can prevent the reflux of stones.

[0018] The fixed pipe bracket is connected to the controller through the pipe groove to form a detachable pipe bracket.

[0019] The tightness of the movable tube support is controlled by a tube support tightness button, and the movable tube support can assist in fixing and positioning the catheter in the tightened state.

[0020] The hydrogel storage tube is connected to the anti-slip handle through a sliding groove to form a movable and detachable storage tube, which facilitates the adjustment of the position of the hydrogel delivery tube.

[0021] The hydrogel is a mixture of thickening sodium hyaluronate and a trace amount of lidocaine gel. The thickening sodium hyaluronate has the function of filling the gaps in the memory metal mesh and assisting the memory metal mesh to fit the inner wall of the ureter. The lidocaine gel has a certain anesthetic function. A trace amount of lidocaine gel can reduce the patient's discomfort during the operation.

[0022] The memory metal mesh cover is made of nickel-titanium alloy, is located at one end of the package tube, and is stored in the package tube. The characteristic of nickel-titanium alloy is shape recovery, and the memory metal mesh cover can be stored and unfolded multiple times without changing its shape.

[0023] The mesh cover expansion controller is arranged at the other end of the bag tube, and the storage and expansion of the memory metal mesh cover are controlled by the mesh cover expansion controller.

[0024] Example 1

[0025] The present invention provides a novel blocking and stone removal catheter, comprising a controller, wherein a non-slip handle is provided at one end of the controller, the other end is connected to the catheter through a movable tube support, a tube support tightening button is provided at the lower end, a tube groove is provided at the top, a fixed tube support is provided on one side of the top, a hydrogel storage tube is provided at the upper end, and a tube push knob is provided on one side. Hydrogel is stored in the hydrogel storage tube, the outlet end is connected to the hydrogel delivery tube, a piston is provided inside, the other end of the hydrogel delivery tube is connected to the needle tube, the catheter is connected to the scope gap through the scope tube, is connected to the hydrogel delivery tube gap through the hydrogel tube, is connected to the occluder gap through the occluder tube, and is connected to the laser lithotripter gap through the optical fiber tube. The occluder comprises a mesh cover deployment controller, a wrapping tube and a memory metal mesh cover.

[0026] When the stone in the patient's ureter is small in size, the method of using the present invention is:

[0027] Insert the scope into the scope tube and then into the patient's ureter together with the catheter. After the stone location is found, insert the occluder and adjust the position using the tube push button on the controller. Adjust the movable tube support using the tube support tightness button to fix the movable tube support and thus stabilize the catheter. Use the external mesh expansion controller to control the expansion of the memory metal mesh. Cover the memory metal mesh with a needle to allow it to move smoothly in the ureter. Pull the stone out of the ureter through the memory metal mesh to complete the removal of the stone.

[0028] Example 2

[0029] The present invention provides a novel blocking and stone removal catheter, comprising a controller, wherein a non-slip handle is provided at one end of the controller, the other end is connected to the catheter through a movable tube support, a tube support tightening button is provided at the lower end, a tube groove is provided at the top, a fixed tube support is provided on one side of the top, a hydrogel storage tube is provided at the upper end, and a tube push knob is provided on one side. Hydrogel is stored in the hydrogel storage tube, the outlet end is connected to the hydrogel delivery tube, a piston is provided inside, the other end of the hydrogel delivery tube is connected to the needle tube, the catheter is connected to the scope gap through the scope tube, is connected to the hydrogel delivery tube gap through the hydrogel tube, is connected to the occluder gap through the occluder tube, and is connected to the laser lithotripter gap through the optical fiber tube. The occluder comprises a mesh cover deployment controller, a wrapping tube and a memory metal mesh cover.

[0030] When the stone in the patient's ureter is large, the method of using the present invention is:

[0031] Insert the scope into the scope tube and then into the patient's ureter together with the catheter. After the stone location is found, push the piston in the hydrogel storage tube to coat the stone with hydrogel. Then insert the occluder, adjust the position using the tube push button on the controller, and adjust the movable tube support using the tube support tightness button to fix the movable tube support, thereby stabilizing the catheter. Use the external mesh expansion controller to control the expansion of the memory metal mesh, and coat the memory metal mesh through the needle to prevent the backflow of smaller stone fragments after laser crushing. At the same time, the memory metal mesh can move smoothly in the ureter. Insert the laser lithotripter from the fiber optic tube and crush the stone with laser when it reaches the stone location. The scattered stone fragments are pulled out through the memory metal mesh to complete the removal of the stone.

[0032] Example 3

[0033] The present invention provides a novel blocking and stone removal catheter, comprising a controller, wherein a non-slip handle is provided at one end of the controller, the other end is connected to the catheter through a movable tube support, a tube support tightening button is provided at the lower end, a tube groove is provided at the top, a fixed tube support is provided on one side of the top, a hydrogel storage tube is provided at the upper end, and a tube push knob is provided on one side. Hydrogel is stored in the hydrogel storage tube, the outlet end is connected to the hydrogel delivery tube, a piston is provided inside, the other end of the hydrogel delivery tube is connected to the needle tube, the catheter is connected to the scope gap through the scope tube, is connected to the hydrogel delivery tube gap through the hydrogel tube, is connected to the occluder gap through the occluder tube, and is connected to the laser lithotripter gap through the optical fiber tube. The occluder comprises a mesh cover deployment controller, a wrapping tube and a memory metal mesh cover.

[0034] When the number of stones in the patient's ureter is large, the method of using the present invention is:

[0035] The scope is inserted into the scope tube and then into the patient's ureter together with the catheter. After the stone location is found, the number of stones is counted and the size is distinguished to develop different stone removal and fragmentation plans. Starting from the stone closest to the ureteral orifice, the plunger in the hydrogel storage tube is pushed to coat the stone with hydrogel. The occluder is then inserted and the position is adjusted using the tube push button on the controller. The flexible tube support is adjusted using the tube support tension button to fix the flexible tube support and thus stabilize the catheter. The memory metal mesh is deployed by the external mesh expansion controller and coated with the needle to prevent the backflow of smaller stone fragments after laser fragmentation. At the same time, the memory metal mesh allows smooth movement in the ureter. The laser lithotripter is inserted through the fiber optic tube and laser fragmented when it reaches the stone location. The scattered stone fragments are pulled out through the memory metal mesh, completing the stone removal. The operation is repeated for subsequent stones.

Claims

1. A stone removal catheter plugging device, characterized in that: The utility model comprises a controller, wherein a non-slip handle is provided at one end of the controller, and the other end is connected to the catheter through a movable tube support, a tube support tightening button is provided at the lower end, a tube groove is provided at the top, a fixed tube support is provided on one side of the top, a hydrogel storage tube is provided at the upper end, and a tube push knob is provided on one side. The tube push button is in direct contact with the tubular instrument or catheter in the tube groove, and the tubular instrument is moved by friction by rotating clockwise or counterclockwise. Hydrogel is stored in the hydrogel storage tube, the outlet end is connected to the hydrogel delivery tube, and a piston is provided inside. The other end of the hydrogel delivery tube is connected to the needle tube, the catheter is connected to the gap of the scope through the scope tube, is connected to the gap of the hydrogel delivery tube through the hydrogel tube, is connected to the gap of the occluder through the occluder tube, and is connected to the gap of the laser lithotripter through the optical fiber tube. The occluder comprises a bag tube and a memory metal mesh cover; the memory metal mesh cover is housed in the bag tube, and the hydrogel is used to at least add a layer of hydrogel layer to the memory metal mesh cover of the occluder.

2. The stone removal catheter according to claim 1, characterized in that: The fixed pipe bracket is connected to the controller via a pipe groove.

3. The stone removal catheter according to claim 1, characterized in that: The tightness of the movable pipe support is controlled by a pipe support tightness button.

4. The stone removal catheter according to claim 1, characterized in that: The hydrogel storage tube is clamped with the anti-slip handle via a sliding groove.

5. The stone removal catheter according to claim 1, characterized in that: The hydrogel is a mixture of thickening sodium hyaluronate and a trace amount of lidocaine gel.

6. The stone removal catheter according to claim 1, characterized in that: The memory metal mesh cover is made of nickel-titanium alloy.

7. The stone removal catheter according to claim 1, characterized in that: The controller for unfolding the net cover is arranged at the other end of the bag tube.

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