Negative pressure suction conversion device

Abstract

The utility model belongs to the field of medical instruments, and particularly relates to a negative pressure suction conversion device. The device comprises a storage barrel with a sealing cover, the bottom of the storage barrel is of a funnel-shaped structure, a storage pipe communicated with a lower funnel opening is vertically fixed to the bottom of the storage barrel, the inner diameter of the storage pipe is larger than that of the lower funnel opening, a switch valve is arranged on the storage pipe, and a first connecting pipe communicated with the storage barrel is connected to the storage barrel; a first connecting sleeve used for being connected with a negative pressure system connector is sleeved on the first connecting pipe, an adjusting valve is arranged on the first connecting pipe, a filtering piece is fixed on the inner wall of the storage barrel, a second connecting pipe communicated with the storage barrel is connected to the storage barrel, and a second connecting sleeve used for being connected with a flexible ureteroscope sheath or a percutaneous nephroscope sheath is sleeved on the second connecting pipe. A one-way valve is arranged on the second connecting pipe. A common flexible ureteroscope sheath or a percutaneous nephroscope sheath can be connected to a negative pressure system of an operating room to form a simple negative pressure suction device which is used for discharging urinary calculus fragments.

Description

Technical Field

[0001] The utility model belongs to the field of medical equipment, and in particular relates to a negative pressure suction conversion device. Background Art

[0002] Urinary stones, also known as kidney stones or urinary stones, are caused by the abnormal accumulation of some crystal substances and organic matrices in the kidneys. In the treatment of urinary stones, some patients often have urinary stones that are difficult to treat with extracorporeal shock wave fragmentation, so urinary stone surgery is required. Common surgical methods include ureteroscopy fragmentation and percutaneous nephrolithotomy. However, in the existing ureteroscopy fragmentation or percutaneous nephrolithotomy fragmentation surgery, there will be stone fragments of different sizes left, and these fragments take a long time to be excreted from the body, and some fragments will even remain in the body and continue to grow. Therefore, a tool that can improve the ability to clear stone fragments is needed.

[0003] Currently, the commercial negative pressure suction sheaths used in ureteroscopes and percutaneous nephroscopes are expensive, so there is a need for a negative pressure suction conversion device that can connect an ordinary ureteroscope sheath or percutaneous nephroscope sheath to the negative pressure system of the operating room to form a simple negative pressure suction device for use in ureteroscope and percutaneous nephroscope stone removal surgery. During the operation, urinary stone fragments can be discharged through negative pressure suction, thereby reducing the postoperative stone residual rate and shortening the stone removal time. Utility Model Content

[0004] The purpose of the utility model is to provide a negative pressure suction conversion device, which can connect an ordinary ureteroscope sheath or a percutaneous nephroscope sheath to a negative pressure system in an operating room to form a simple negative pressure suction device for discharging urinary stone fragments.

[0005] The negative pressure suction conversion device comprises a storage barrel with a sealing cover, the bottom of the storage barrel is a funnel-shaped structure, a storage tube connected to the lower bucket mouth is vertically fixed to the bottom of the storage barrel, the inner diameter of the storage tube is larger than the lower bucket mouth, a switch valve is arranged on the storage tube, a first connecting tube connected to the storage barrel is connected to the storage barrel, a first connecting sleeve for connecting a negative pressure system connector is mounted on the first connecting tube, a regulating valve is arranged on the first connecting tube, a filter element for filtering the liquid flowing into the first connecting tube is fixed on the inner wall of the storage barrel, a second connecting tube connected to the storage barrel is connected to the storage barrel, a second connecting sleeve for connecting a ureteroscope sheath or a percutaneous nephroscope sheath is mounted on the second connecting tube, and a one-way valve is arranged on the second connecting tube.

[0006] Furthermore, the first connecting tube and the second connecting tube are parallel and staggered in an up-and-down manner, and the first connecting tube is located above the second connecting tube.

[0007] Furthermore, a baffle is fixed in an inclined manner in the storage barrel to prevent stones from floating toward the filter element.

[0008] Furthermore, the storage barrel and the storage tube are made of transparent material.

[0009] Furthermore, a screw block is fixed on the top of the sealing cover to facilitate its disassembly and assembly.

[0010] Furthermore, the first connecting sleeve and the second connecting sleeve are made of elastic material.

[0011] Furthermore, the first connecting tube and the second connecting tube are made of transparent material.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The first connecting tube is connected to the joint of the negative pressure system of the operating room through the first connecting sleeve, and the second connecting tube is connected to one end of the ureteroscope sheath or the percutaneous nephroscope sheath through the second connecting sleeve, so that the negative pressure system, the first connecting tube, the storage barrel, the second connecting tube, the ureteroscope sheath or the percutaneous nephroscope sheath are connected in sequence to form a simple negative pressure suction device, so that the negative pressure generated by the negative pressure system can be transmitted to the end of the ureteroscope sheath or the percutaneous nephroscope sheath inserted into the human body, and the urinary stone fragments in the human body are attracted and stored in the storage barrel, and the fragments in the perfusion fluid are filtered through the filter element, so as to clean the broken urinary stones and reduce the cost of surgery.

[0014] 2. After entering the storage barrel, the fragments of urinary stones will settle to the bottom of the funnel-shaped barrel, and the fragments of urinary stones will be collected into the storage tube through the funnel-shaped barrel bottom to prevent the fragments of urinary stones from being scattered all over the storage barrel. Because the aperture of the lower bucket mouth at the bottom of the barrel is smaller than the inner diameter of the storage tube, the fragments are easily blocked by the bottom of the storage barrel when floating up, and are not easy to return to the storage tube, thus preventing the fragments from returning to the storage barrel and clogging the filter. The principle is the same as the one-way entrance of the fish cage.

[0015] 3. It is easy to disassemble, and the internal impurities and stains can be rinsed after disassembly. After rinsing the conversion device, put it into the disinfectant for immersion disinfection or rinse and disinfection with the disinfectant, and it can be reused later, saving the use cost and avoiding waste of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a three-dimensional diagram of the utility model;

[0018] The names of the components in the figure are: 1. first connecting sleeve 2, first connecting pipe 3, regulating valve 4, filter 5, screw block 6, sealing cover 7, storage barrel 8, baffle 9, one-way valve 10, second connecting sleeve 11, second connecting pipe 12, lower bucket mouth 13, storage pipe 14, switch valve. DETAILED DESCRIPTION

[0019] The present invention is further described below through specific embodiments in conjunction with the accompanying drawings, but the present invention is not limited thereto. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

[0020] Example 1

[0021] The negative pressure suction conversion device described in this embodiment is as follows Figure 1 and Figure 2 As shown, it includes a storage barrel 7 with a sealing cover, and a screw block 5 is fixed on the top of the sealing cover for easy disassembly and assembly; the sealing cover is connected to the open end of the storage barrel 7 by a thread, and an external thread is provided on the upper end of the storage barrel 7, and an internal thread is provided on the sealing cover to cooperate with the thread, so that the sealing cover can seal the opening of the storage barrel 7 after being installed on the storage barrel 7; when in use, medical staff can pinch the screw block 5 with their fingers, and by twisting the screw block 5, it is more convenient to rotate and open the sealing cover; after opening the sealing cover, the impurities and stains inside can be rinsed, and the conversion device can be rinsed and then put into a disinfectant for immersion and disinfection, or it can be rinsed and disinfected with a disinfectant, waiting for subsequent repeated use, saving the use cost and avoiding waste of resources;

[0022] The bottom of the storage barrel 7 is a funnel-shaped structure, the storage barrel 7 is a cylindrical barrel body, and the bottom of the storage barrel 7 is a conical funnel shape. Therefore, when the perfusion liquid enters the storage barrel 7, the mixed urinary stone fragments therein gradually settle to the bottom of the storage barrel 7 by their own weight, and are discharged from the lower bucket 12 at the bottom of the storage barrel 7; the storage barrel 7 can effectively collect the precipitated urinary stone fragments through the funnel-shaped bottom, so as to prevent the urinary stone fragments from being scattered all over the inner bottom of the storage barrel 7;

[0023] A storage tube 13 connected to the lower bucket opening is vertically fixed at the bottom of the storage barrel 7. When the fragments of urinary stones are discharged from the lower bucket opening 12, they will fall into the storage tube 13, and the fragments of urinary stones are stored through the storage tube 13.

[0024] The storage barrel 7 and the storage tube 13 are made of tempered glass, laminated glass, polymethyl methacrylate, polycarbonate, polyvinyl alcohol ester and other materials. The transparent storage barrel 7 and the storage tube 13 can facilitate medical staff to observe the internal state;

[0025] The inner diameter of the storage tube 13 is larger than the lower bucket mouth. When the fragments of urinary stones fall into the storage tube 13 from the lower bucket mouth 12, the fragments are not easy to return to the storage bucket 7 from the lower bucket mouth 12 due to the smaller aperture of the lower bucket mouth 12. When the fragments float upward, they are easily blocked by the bottom of the storage bucket 7, so that the fragments entering the storage tube 13 are not easy to return to the storage tube 13, thereby preventing the fragments of urinary stones from clogging the filter element 4. The principle is the same as the one-way entrance of the fishing cage.

[0026] The storage tube 13 is provided with a switch valve 14, which is a device for controlling the flow of fluid (liquid or gas); it usually includes a valve body, a movable valve flap (or valve core) and a mechanism for operating the valve flap (such as a handle, an electric actuator or a pneumatic actuator, etc.); the main function of the switch valve is to open or close the fluid channel in the pipeline or equipment; the switch valve 14 in the utility model is a manual switch valve, and the storage tube 13 is opened or closed by the switch valve 14. After closing the switch valve 14, the fragments of urinary stones can be stored through the storage tube 13, and after opening the switch valve 14, the fragments of urinary stones in the storage tube 13 can be discharged;

[0027] The storage barrel 7 is connected with a first connecting pipe 2 which is in communication therewith, and the first connecting pipe 2 is sleeved with a first connecting sleeve 1 for connecting to a negative pressure system, and the first connecting sleeve 1 is sleeved on a joint of a negative pressure system in an operating room, so that the first connecting pipe 2 is in communication with the negative pressure system, and the negative pressure system is in communication with the storage barrel 7 through the first connecting pipe 2; when in use, the negative pressure system performs negative pressure suction on the perfusion liquid in the storage barrel 7 through the first connecting pipe 2;

[0028] The first connecting pipe 2 is provided with a regulating valve 3. The regulating valve 3, also known as a control valve, is a very important control element in an industrial automation system. It is used to change parameters such as the flow rate, pressure or temperature of the fluid to achieve precise control of the pipeline. The utility model adopts a throttle valve. The throttle valve achieves a throttling effect on the fluid by changing the flow area between the valve core and the valve seat. When the fluid flows through the throttle valve, the flow area changes due to the movement or rotation of the valve core, and the flow rate and pressure also change accordingly. Through the throttling effect of the regulating valve 3, the perfusion liquid in the first connecting pipe 2 can be adjusted or closed, thereby achieving precise control of the negative pressure to avoid excessive negative pressure causing harm to the patient's body, and when the storage barrel 7 is disassembled, the regulating valve 3 is completely closed to prevent residual perfusion liquid from flowing out of the first connecting pipe 2.

[0029] A filter 4 for filtering the liquid flowing into the first connecting pipe 2 is fixed on the inner wall of the storage barrel 7. In this embodiment, the filter 4 is made of a PP filter plate, a PVDF filter plate, an aluminum filter plate, a stainless steel filter screen, a plastic filter screen, etc. The filter 4 is installed on the inner wall of the storage barrel 7 by welding, pasting or screwing, and is aligned with the first connecting pipe 2. In use, when the perfusion liquid in the storage barrel 7 is sucked out from the first connecting pipe 2, the filter 4 can filter out urinary stone fragments in the perfusion liquid, thereby preventing the fragments from damaging the negative pressure system;

[0030] The storage barrel 7 is connected to a second connecting tube 11 which is in communication therewith. The second connecting tube 11 is sleeved with a second connecting sleeve 10 for connecting a ureteroscope sheath or a percutaneous nephroscope sheath. The second connecting sleeve 10 is sleeved on one end of the ureteroscope sheath or the percutaneous nephroscope sheath which is exposed outside the human body, so that the negative pressure generated by the negative pressure system can be transmitted to the ureteroscope sheath or the percutaneous nephroscope sheath through the second connecting tube 11, and the urinary stone fragments in the patient's body are sucked through the end of the ureteroscope sheath or the percutaneous nephroscope sheath which is inserted into the human body, thereby cleaning the broken urinary stones;

[0031] The first connecting sleeve 1 and the second connecting sleeve 10 are made of latex, natural rubber, styrene-butadiene rubber, butyl rubber, silicone rubber and other materials. These materials have good elasticity and can be tightly fitted with the joint of the pressure system, the ureteroscope sheath or the percutaneous nephroscope sheath to prevent the leakage of the perfusion fluid or air from the connection, which is convenient for medical staff to disassemble and assemble, and has good air tightness;

[0032] The first connecting tube 2 and the second connecting tube 11 are made of materials such as polycarbonate, epoxy resin, polyurethane or polypropylene. The transparent first connecting tube 2 and the second connecting tube 11 can facilitate medical staff to check the flow status in the tube;

[0033] A one-way valve 9 is provided on the second connecting pipe 11. The one-way valve 9 is a valve that allows fluid to flow only along the water inlet, but the medium at the water outlet cannot flow back. It is also called a check valve or non-return valve. When the fluid flows in from the inlet, the one-way valve flap will open to allow the fluid to pass through, but when the fluid attempts to flow in the opposite direction from the outlet, the one-way valve flap will close under the action of the fluid pressure and the valve flap's own gravity, thereby preventing the reverse flow of the fluid. In this embodiment, the one-way valve 9 is mainly used to prevent the reverse flow of the perfusion liquid entering the storage barrel 7 through the second connecting pipe 11, and to seal the second connecting pipe 11 after cleaning the debris.

[0034] The first connecting tube 2 and the second connecting tube 11 are parallel and offset up and down, and the first connecting tube 2 is located above the second connecting tube 11. In the implementation of this city, the first connecting tube 2 is located on the left side of the upper half of the barrel body of the storage barrel 7, and the second connecting tube 11 is located on the right side of the lower half of the barrel body of the storage barrel 7, so that there can be a distance between the first connecting tube 2 and the second connecting tube 11 for the precipitation of urinary stone fragments. The farther the interface distance between the first connecting tube 2 and the second connecting tube 11 on the storage barrel 7 is, the longer the time for the precipitation of urinary stone fragments is, and the better the precipitation effect is;

[0035] A baffle 8 is fixed in an inclined shape in the storage barrel 7 for preventing stones from floating toward the filter element 4. In the present embodiment, the baffle 8 is inclined with the left side higher than the right side, and is located between the first connecting tube 2 and the second connecting tube 11. An opening for the passage of the perfusion liquid is provided at the right end corresponding to the upper part of the interface of the second connecting tube 11. In use, the perfusion liquid flowing out of the second connecting tube 11 will have a certain impact force, so that the urinary stone fragments in the perfusion liquid will float upward with the water flow, which may cause the fragments to block the filter element 4 and be unfavorable for the precipitation of the urinary stone fragments. The baffle 8 can block the perfusion liquid and the urinary stone fragments to prevent the urinary stone fragments from floating up. When the fragments float to a position where the impact force of the water flow is not strong, they will settle into the storage tube 13 under the action of their own gravity. The baffle 8 with the left side higher than the right side can prevent the fragments from moving along the plate body toward the opening, and prevent the fragments from floating from the opening of the baffle 8 to the filter element 4.

[0036] In actual use, the first connecting sleeve 1 is first mounted on the joint of the negative pressure system of the operating room, so that the first connecting tube 2 is connected to the negative pressure system, and the second connecting sleeve 10 is mounted on the end of the ureteroscope sheath or the percutaneous nephroscope sheath exposed outside the body, so that the negative pressure system, the first connecting tube 2, the storage barrel 7, the second connecting tube 11, the ureteroscope sheath or the percutaneous nephroscope sheath are connected in sequence, thereby forming a simple negative pressure suction device, so that the negative pressure generated by the negative pressure system can be transmitted to the ureteroscope sheath or the percutaneous nephroscope sheath inserted into the human body. At one end of the first connecting pipe 2, the urinary stone fragments in the human body are sucked, and the negative pressure of the first connecting pipe 2 is adjusted by the regulating valve 3 to suck the urinary stone fragments and the perfusion liquid into the storage barrel 7, so as to clean the broken urinary stones; when the urinary stone fragments and the perfusion liquid are sucked into the storage barrel 7 through the first connecting pipe 2, the urinary stone fragments will settle due to their own weight, and the settled fragments will slide along the bottom of the storage barrel 7 when contacting the bottom of the storage barrel 7 to the lower bucket mouth 12, and fall into the storage pipe 13 from the lower bucket mouth 12, so as to clean the urinary stone fragments. Collection and storage, because the aperture of the lower bucket 12 is smaller than the inner diameter of the storage tube 13, the fragments are easily blocked by the bottom of the storage bucket 7 when floating up, and are not easy to return to the storage tube 13. Its principle is the same as the one-way inlet of the fishing cage; after sedimentation, the perfusion liquid will flow toward the interface direction of the first connecting pipe 2 under the attraction of the negative pressure system, and when the perfusion liquid flows through the filter element 4, the filter element 4 can filter out the tiny urinary stone fragments in the perfusion liquid, thereby preventing the fragments from damaging the negative pressure system; when the urinary stones are cleaned up, close the regulating valve 3. To prevent the residual perfusion liquid in the storage barrel 7 from flowing out from the first connecting tube 2, remove the first connecting sleeve 1 and the second connecting sleeve 10, transfer the conversion device to the urinary stone storage container, open the switch valve 14, and pour the urinary stone fragments in the storage tube 13 into the storage container; after use, open the sealing cover, rinse the impurities and stains inside, rinse the conversion device clean and put it into the disinfectant for soaking and disinfection, or use the disinfectant for rinsing and disinfection, waiting for subsequent reuse, thereby reducing the cost of the operation.

Claims

1. A negative pressure suction conversion device, comprising a storage barrel (7) with a sealing cover, characterized in that: The bottom of the storage barrel (7) is in a funnel-shaped structure. A storage tube (13) connected to and in communication with the lower bucket opening is vertically fixed to the bottom of the storage barrel (7). The inner diameter of the storage tube (13) is larger than the lower bucket opening. A switch valve (14) is arranged on the storage tube (13). The storage barrel (7) is connected to a first connecting tube (2) in communication with the storage barrel. A first connecting sleeve (1) for connecting a negative pressure system connector is mounted on the first connecting tube (2). A regulating valve (3) is arranged on the first connecting tube (2). A filter element (4) for filtering liquid flowing into the first connecting tube (2) is fixed on the inner wall of the storage barrel (7). The storage barrel (7) is connected to a second connecting tube (11) in communication with the storage barrel. A second connecting sleeve (10) for connecting a ureteroscope sheath or a percutaneous nephroscope sheath is mounted on the second connecting tube (11). A one-way valve (9) is arranged on the second connecting tube (11).

2. The negative pressure suction conversion device according to claim 1, characterized in that: The first connecting tube (2) and the second connecting tube (11) are in a vertically parallel and offset state, with the first connecting tube (2) being located above the second connecting tube (11).

3. The negative pressure suction conversion device according to claim 2, characterized in that: A baffle (8) is fixed in an inclined shape in the storage barrel (7) for preventing stones from floating toward the filter element (4).

4. The negative pressure suction conversion device according to claim 1, characterized in that: The storage barrel (7) and the storage tube (13) are made of transparent material.

5. The negative pressure suction conversion device according to claim 1, characterized in that: A screw block (5) is fixed on the top of the sealing cover to facilitate its disassembly and assembly.

6. The negative pressure suction conversion device according to claim 1, characterized in that: The first connecting sleeve (1) and the second connecting sleeve (10) are made of elastic material.

7. The negative pressure suction conversion device according to claim 1, characterized in that: The first connecting tube (2) and the second connecting tube (11) are made of transparent material.

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