Auxiliary operation device for bladder lithotripsy

Abstract

The invention relates to the technical field of bladder stone surgery auxiliary tools, in particular to a bladder lithotripsy surgery auxiliary operation device which comprises a flushing fluid bubble increasing device and a flushing pipe assembly. The flushing pipe assembly comprises a flushing liquid inlet pipe, and a liquid inlet of the flushing liquid inlet pipe is communicated with the gas-liquid outlet; the flushing pipe assembly further comprises an outer sheath catheter, and a negative pressure liquid extraction opening is formed in the outer side end of the outer sheath catheter. By the adoption of the device, gas-liquid mixed flushing liquid containing a large number of bubbles can be obtained, in the laser lithotripsy process, liquid inlet flushing is carried out, meanwhile, the flushing liquid can be synchronously pumped out of an operation cavity through negative pressure, calculus particles are pumped out of the operation cavity in time, and the operation effect can be greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of surgical auxiliary appliances for bladder stones, and particularly to an auxiliary operating device for bladder lithotripsy surgery. Background Art

[0002] Laser lithotripsy, such as laser lithotripsy for bladder stones, is currently performed under topical anesthesia of the urethral mucosa or epidural anesthesia. The outer sheath catheter is coated with a lubricating substance and slowly inserted into the urethra through the external urethral orifice, and then gently pushed into the bladder to form a working channel. Then, a laser fiber and a flushing tube are inserted into the working channel to make the end of the fiber close to the stone. According to the composition and hardness of the stone, appropriate laser energy and pulse frequency are selected. Then, a flushing fluid is introduced through the flushing tube for flushing. Flushing plays an indispensable auxiliary role in assisting laser lithotripsy. The purpose is to assist in flushing the stones adhered to the mucosa clean under the action of the laser, and at the same time, rely on the flushing tube to pump out the liquid in the bladder. However, the current flushing system has very limited auxiliary effects. The main problem is that when the current commonly used flushing system faces complex stone structures or large stone fragments, it is often difficult to completely remove the debris. Some stone debris will remain on the mucosa of the bladder. If these residual debris are not removed cleanly, they may not only re-aggregate to form new stones, increasing the recurrence risk for patients, but also cause urinary tract obstruction, leading to a series of complications such as pain and infection, seriously affecting the postoperative recovery of patients. Summary of the Invention

[0003] The present invention provides an auxiliary operating device for bladder lithotripsy surgery to solve the related technical problems as described in the background art.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] An auxiliary operating device for bladder lithotripsy surgery includes a flushing fluid foaming device and a flushing tube assembly;

[0006] The flushing tube assembly includes a flushing inlet tube, and the inlet of the flushing inlet tube is communicated with a gas-liquid outlet. The flushing tube assembly further includes an outer sheath catheter, and a negative pressure liquid extraction port is provided at the outer end of the outer sheath catheter. Optionally, the front end of the flushing inlet tube is sealed, and a plurality of gas-liquid outlet holes are provided on the side wall of its front part. Optionally, a circular outer cover is further provided outside the front end of the flushing inlet tube; the front end of the circular outer cover is of an open structure.

[0007] Optionally, it further includes a negative pressure liquid extraction assembly, which includes a negative pressure liquid extraction bottle and a negative pressure liquid inlet collecting pipe. The top of the negative pressure liquid extraction bottle is communicated with the lower end of the negative pressure liquid inlet collecting pipe. The negative pressure liquid inlet collecting pipe includes an outer pipe and an inner pipe. The inner pipe is arranged in the inner cavity of the outer pipe, and the lower end of the inner pipe extends out of the lower end of the outer pipe. The upper end side of the outer pipe is communicated with a negative pressure pipeline. The upper end side of the inner pipe is communicated with the negative pressure liquid extraction port.

[0008] Optionally, the flushing liquid foaming device includes a device body, and the device body includes a rotating head. The rotating head is integrally in an inverted cone structure, and a first conical cavity and a second conical cavity are arranged inside it. The second conical cavity is arranged directly below the first conical cavity. A communication hole is arranged between the second conical cavity and the first conical cavity. A gas-liquid outlet is arranged at the top of the first conical cavity. A liquid inlet pipe is arranged at the lower center of the first conical cavity. An air inlet pipe is arranged at the lower center of the second conical cavity. The liquid inlet pipe and the air inlet pipe are respectively and correspondingly communicated with an infusion pipeline and an air supply pipeline through a rotary joint. The rotating head is rotatably arranged on the device body and is driven to rotate by a motor. A gas-liquid outlet cavity is arranged on the device body. The gas-liquid outlet cavity is arranged above the rotating head. The gas-liquid outlet cavity is provided with a gas-liquid outlet.

[0009] Optionally, a rotating shaft is arranged at the lower center of the rotating head. The rotating shaft is movably connected to the device body through a bearing. The upper part of the rotating head is movably connected to the device body through a sealed bearing. Optionally, the rotating head is provided with a top cover, and the top cover has a convex surface structure. Support rods are arranged below the top cover.

[0010] Optionally, in the first conical cavity, reinforcing ribs are arranged at its lower part.

[0011] Optionally, the top of the second conical cavity is lower than the top of the first conical cavity. The communication hole is arranged in the upper area of the second conical cavity and correspondingly arranged in the middle area of the second conical cavity.

[0012] Optionally, the gas-liquid outlet cavity has a cone structure with a narrow upper part and a wide lower part. The gas-liquid outlet is arranged at the central position of the top.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The flushing liquid inlet pipe of the present invention is used to transport the gas-liquid mixed flushing liquid with a high bubble content, and higher velocity fluid is used for flushing through pressurization. Therefore, its pipe diameter can be set smaller compared with the existing flushing liquid inlet pipe; while the pipe diameter of the outer sheath catheter remains unchanged, and thus the gap between the outer sheath catheter and the flushing liquid inlet pipe is larger. Therefore, the outer sheath catheter can be set as a negative pressure liquid extraction pipe. This structure can realize that during the laser lithotripsy process, while flushing with liquid, it can simultaneously realize the synchronous negative pressure extraction of the flushing liquid from the operation cavity, timely extract the stone particles from the operation cavity, and greatly improve the surgical effect.

[0015] 2. By creatively using the gas-liquid mixed flushing liquid with a high bubble content, during the laser lithotripsy process, by combining the gas-liquid mixed flushing liquid with a high bubble content, the flushing liquid containing a large number of bubbles is ejected through the flushing liquid inlet pipe. It can not only significantly improve the auxiliary cleaning effect on the stones adhered to the bladder mucosa, but also, a large number of bubbles can greatly reduce the damage of the fluid to the human mucosa, significantly reduce the surgical side effects. After a large number of bubbles are ejected, the small crushed stone particles after the action of the laser are further agitated to prevent precipitation, and also further improve the extraction effect of the small particle stones during the negative pressure liquid extraction process, greatly reducing a series of complications such as recurrence, urinary tract obstruction, pain, and infection caused by incomplete removal of the crushed stones.

[0016] 3. The flushing liquid foam increasing device provided by the present invention is provided with a rotating head. The flushing liquid is introduced into the first conical cavity, and the centrifugal force is used to promote the upward movement of the flushing liquid. At the same time, by providing a second conical cavity, the positive pressure gas is introduced into the second conical cavity. Under the synchronous centrifugal action, the positive pressure gas enters the first conical cavity through the communication hole for mixing, and at the same time, it is further pressurized into the gas-liquid mixed flushing liquid by the centrifugal force. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments.

[0018] Figure 1 It is a schematic structural diagram of the flushing liquid foam increasing device of the present invention;

[0019] Figure 2 It is a schematic diagram of the fluid flow in the flushing liquid foam increasing device of the present invention;

[0020] Figure 3 It is a schematic structural diagram of the currently used flushing tube assembly;

[0021] Figure 4 It is a schematic structural diagram of the flushing tube assembly of the present invention;

[0022] Figure 5 It is a schematic structural diagram of the negative pressure liquid extraction assembly of the present invention;

[0023] Figure 6 It is an intraoperative area image with the power supply of the flushing fluid foaming device of the present invention disconnected during laser lithotripsy;

[0024] Figure 7 It is Figure 6 an intraoperative area image with the power supply of the flushing fluid foaming device of the present invention turned on;

[0025] Figure 8 It is Figure 7 an intraoperative area image with the negative pressure liquid extraction component enabled. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "inner", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0028] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set" and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0029] A bladder lithotripsy surgical auxiliary operation device includes a flushing fluid foaming device and a flushing tube assembly;

[0030] As Figure 3 shown, the currently used flushing tube assembly includes a flushing inlet tube 21 and an outer sheath catheter 20. The outer ends of the flushing inlet tube 21 and the outer sheath catheter 20 are sealed with medical silicone or a polypropylene (PP) sealing material similar to a heparin cap; a single catheter 25 is used as both an infusion tube and a liquid extraction tube; during the operation, the outer sheath catheter 20 is lubricated and inserted through the urethra 27 and into the intraoperative area bladder 19 through the prostate 26, and laser lithotripsy is performed relying on the laser optical fiber 24.

[0031] Based on different technical principles, the present invention makes the following changes to the structure: For example Figure 4 As shown, the flushing tube assembly of the present invention includes a flushing liquid inlet tube 21-1. The liquid inlet of the flushing liquid inlet tube 21-1 is communicated with the gas-liquid outlet through a hose 25-1. The flushing tube assembly further includes an outer sheath catheter 20-1. A negative pressure liquid extraction port 28 is arranged at the outer end of the outer sheath catheter 20-1, which is used to timely extract the crushed stones and flushing liquid in the bladder 19 during the operation.

[0032] Optionally, as Figure 4 shown, the front end of the flushing liquid inlet tube 21-1 is sealed, and a plurality of gas-liquid outlet holes 21-2 are arranged on the side wall of its front part. A circular outer cover 21-3 is further arranged outside the front end of the flushing liquid inlet tube 21-1. The front end of the circular outer cover 21-3 is of an open structure. The functions of this design are as follows: A plurality of gas-liquid outlet holes 21-2 are arranged on the side wall, which can reduce the direct ejection of high-speed fluid and reduce the damage to the mucosa. At the same time, the circular outer cover 21-3 has the following functions: (1) reducing the direct ejection of high-speed fluid from the gas-liquid outlet holes 21-2; (2) forming a bubble release area with an open front end. After the gas-liquid mixed flushing liquid is ejected from the gas-liquid outlet holes 21-2, pressure release can be carried out in this bubble release area, promoting the further growth and enlargement of a large number of bubbles, and then flushing the adhesion surface of the stone from the front end.

[0033] Optionally, as Figure 5 shown, it further includes a negative pressure liquid extraction assembly. The negative pressure liquid extraction assembly includes a negative pressure liquid extraction bottle 29 and a negative pressure liquid inlet collecting pipe. The top of the negative pressure liquid extraction bottle 29 is communicated with the lower end of the negative pressure liquid inlet collecting pipe. The negative pressure liquid inlet collecting pipe includes an outer pipe 30 and an inner pipe 31. The inner pipe 31 is arranged in the inner cavity of the outer pipe 30, and the lower end of the inner pipe extends out of the lower end of the outer pipe. The upper end side of the outer pipe is communicated with a negative pressure pipeline. The upper end side of the inner pipe is communicated with the negative pressure liquid extraction port.

[0034] Optionally, as Figures 1-2As shown, the flushing liquid foam increasing device includes a device body 1, and the device body 1 includes a rotating head. The rotating head is integrally in an inverted cone structure, and a first conical cavity 12 and a second conical cavity 13 are arranged inside it; the second conical cavity 13 is arranged directly below the first conical cavity 12; a communication hole 6 is arranged between the second conical cavity 13 and the first conical cavity 12; in this embodiment, the communication hole 6 is a ventilation hole, and its opening direction is inclined upward, that is, matching the centrifugal movement direction of the gas in the centrifugal state (upward and outward) to reduce resistance; a gas-liquid outlet 11 is arranged at the top of the first conical cavity; a liquid inlet pipe 16 is arranged at the lower center of the first conical cavity; an air inlet pipe 4 is arranged at the lower center of the second conical cavity; the liquid inlet pipe and the air inlet pipe are respectively and correspondingly communicated with a liquid delivery pipeline 14 and a gas delivery pipeline 5 (the positive pressure air source pressure is adjustable) through a rotary joint 17; the rotating head is rotatably arranged on the device body and is driven to rotate by a motor 2; in this embodiment, a rotating shaft 3 is arranged at the lower center of the rotating head, and the rotating shaft 3 is movably connected with the device body 1 through a bearing 18; the upper part of the rotating head is movably connected with the device body through a sealed bearing 7. In this embodiment, the motor 2 directly drives the rotating head to rotate at a high speed through a coupling.

[0035] A gas-liquid outlet cavity 8 is arranged on the device body 1; the gas-liquid outlet cavity 8 is arranged above the rotating head; the gas-liquid outlet cavity is provided with a gas-liquid outlet 9. In order to improve the smoothness of fluid flow, the gas-liquid outlet cavity 8 is in a cone structure with a narrow upper part and a wide lower part; the gas-liquid outlet 9 is arranged at the center position of the top.

[0036] In order to reduce the gas-liquid resistance during operation, in this embodiment, the rotating head is provided with a top cover 10, and the top cover 10 is in a convex structure; a support rod 15 is arranged below the top cover 10, and this structure can reduce the weight of the rotating head itself.

[0037] Optionally, in order to improve the rigidity of the rotating head, a number of reinforcing ribs 15-1 are arranged at the lower part inside the first conical cavity.

[0038] Optionally, as Figure 1 shown, the top of the second conical cavity is lower than the top of the first conical cavity; the communication hole 6 is arranged in the upper region of the second conical cavity and correspondingly arranged in the middle region of the second conical cavity. The purpose and effect of such a design are: combined with Figure 2 for understanding, when the machine is to be started, the flushing liquid is pumped into the center below of the first conical cavity 12, and then under the centrifugal action of the rotating head, as in Figure 2The flushing liquid in the S area shown flows upward and accelerates, that is, the S area serves as the acceleration area of the flushing liquid; the positive-pressure gas is input from below the center of the second conical cavity 13, and after being synchronously accelerated, it passes through a number of the communication holes 6 arranged in a 360-degree pattern, and then the positive-pressure gas enters the first conical cavity 12 and is mixed with the flushing liquid, that is, the M area constitutes the mixing area, and then it continues to be further accelerated and mixed under the centrifugal force, that is, it enters the P area, and a gas-liquid mixed flushing liquid with more gas and flushing liquid fully mixed is obtained, and is output from the gas-liquid outlet 9.

[0039] The effect of using this device is as Figures 6-8 shown in the Figure 6 image. In the image of the surgical area with the power supply of the flushing liquid foam-increasing device of the present invention turned off, it can be seen from the figure that there are almost no bubbles in the liquid in the surgical cavity. Even if flushing is carried out in a timely manner, the flushing effect on the stones adhering to the mucosa is naturally limited. And as Figure 7 shown, after the power supply of the flushing liquid foam-increasing device of the present invention is turned on, a large number of bubbles (bubble columns) appear. The appearance of the bubble columns indicates that the ejected gas-liquid mixed flushing liquid contains a large number of bubbles. The ejection of the bubbles, firstly, can achieve the flushing of high-speed fluid and improve the flushing effect; secondly, the bubbles play a protective role on the skin mucosa and prevent the flowing liquid from damaging the mucosa; thirdly, the bubbles will gradually expand after ejection, and after contacting the stone-mucosa, it can improve the removal effect of the stones; fourthly, the bubbles play a stirring role in the entire surgical area, which is beneficial to improving the extraction efficiency of the crushed stone particles and the extraction effect when the flushing liquid is evacuated (as Figure 8 shown).

Claims

1. Bladder lithotripsy surgery auxiliary operation device, characterized by: It includes a flushing liquid bubble increasing device and a flushing pipe assembly; The flushing tube assembly comprises a flushing liquid inlet tube, the liquid inlet of which is connected to the gas-liquid outlet; the flushing tube assembly also comprises an outer sheath catheter, the outer end of which is provided with a negative pressure liquid extraction port.

2. The bladder lithotripsy auxiliary operation device according to claim 1, characterized in that: The front end of the flushing liquid inlet pipe is sealed, and a plurality of gas-liquid outlet holes are arranged on the side wall of the front portion.

3. The bladder lithotripsy auxiliary operation device according to claim 1, characterized in that: A circular outer cover is also arranged outside the front end of the flushing liquid inlet pipe; the front end of the circular outer cover is an open structure.

4. The bladder lithotripsy auxiliary operation device according to claim 1, characterized in that: It also includes a negative pressure liquid extraction component, which includes a negative pressure liquid extraction bottle and a negative pressure liquid inlet collecting pipe, the top of the negative pressure liquid extraction bottle is connected to the lower end of the negative pressure liquid inlet collecting pipe; the negative pressure liquid inlet collecting pipe includes an outer tube and an inner tube, the inner tube is arranged in the inner cavity of the outer tube, and the lower end of the inner tube extends out of the lower end of the outer tube; the upper end side of the outer tube is connected to the negative pressure pipeline; the upper end side of the inner tube is connected to the negative pressure liquid extraction port.

5. The bladder lithotripsy auxiliary operation device according to claim 1, characterized in that: The flushing liquid foaming device includes a device body, which includes a rotating head. The rotating head is an inverted cone structure as a whole, and a first conical cavity and a second conical cavity are arranged inside the rotating head; the second conical cavity is arranged directly below the first conical cavity; a connecting hole is arranged between the second conical cavity and the first conical cavity; a gas-liquid outlet is arranged at the top of the first conical cavity; a liquid inlet pipe is arranged at the lower center of the first conical cavity; an air inlet pipe is arranged at the lower center of the second conical cavity; the liquid inlet pipe and the air inlet pipe are respectively connected to the liquid infusion pipeline and the air infusion pipeline through a rotating joint; the rotating head can be rotatably arranged on the device body and driven to rotate by a motor; a gas-liquid outlet cavity is arranged on the device body; the gas-liquid outlet cavity is arranged above the rotating head; the gas-liquid outlet cavity is provided with a gas-liquid outlet.

6. The bladder lithotripsy auxiliary operation device according to claim 5, characterized in that: A rotating shaft is arranged at the central lower part of the rotating head, and the rotating shaft is movably connected to the device body through a bearing; and the upper part of the rotating head is movably connected to the device body through a sealing bearing.

7. The bladder lithotripsy auxiliary operation device according to claim 5, characterized in that: The rotating head is provided with a top cover, and the top cover is a convex structure; a support rod is provided below the top cover.

8. The bladder lithotripsy auxiliary operation device according to claim 5, characterized in that: A reinforcing rib is arranged at the lower part of the first conical cavity.

9. The bladder lithotripsy auxiliary operation device according to claim 5, characterized in that: The top of the second conical cavity is lower than the top of the first conical cavity; the communicating hole is arranged in the upper area of ​​the second conical cavity and correspondingly arranged in the middle area of ​​the second conical cavity.

10. The bladder lithotripsy auxiliary operation device according to claim 5, characterized in that: The gas-liquid outlet cavity is in a conical structure that is narrow at the top and wide at the bottom; the gas-liquid outlet is arranged at the center of the top.

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