In-vitro laser lithotripsy efficiency detection device

Abstract

The utility model belongs to the technical field of laser lithotripsy, and discloses an in-vitro laser lithotripsy efficiency detection device. The device comprises a container, a liquid injection mechanism and a collector, the container is provided with a first opening and a second opening, the first opening is used for inserting a laser fiber, the second opening is located at the bottom of the container, the liquid injection mechanism is communicated with the container and can inject liquid into the container, and the collector is provided with a third opening and at least one fourth opening. The third opening is formed in the top of the collector, the fourth opening is formed in the bottom of the collector, the third opening is communicated with the fourth opening, the second opening is communicated with the third opening, and the size of the fourth opening is not larger than that of the second opening. By means of the device, in-vivo lithotripsy conditions can be simulated, so that detection is closer to clinical practical operation, particles obtained after lithotripsy can be distinguished according to the size, the lithotripsy effect of laser lithotripsy is evaluated, and parameter setting of clinical practical operation can be guided easily.

Description

Technical Field

[0001] This utility model relates to the field of laser lithotripsy technology, and in particular to an extracorporeal laser lithotripsy efficiency testing device. Background Technology

[0002] During laser lithotripsy, a laser fiber is inserted into the body through an endoscope (such as a ureteroscope or percutaneous nephrolithotomy) to directly target the stone, breaking it up without open surgery. This minimally invasive method significantly reduces the trauma, bleeding risk, and postoperative recovery time of traditional surgery, allowing patients to typically resume their daily activities in a short period. For example, thulium laser lithotripsy combined with flexible endoscopic techniques can treat kidney stones larger than 2 cm.

[0003] The efficiency of laser lithotripsy directly affects the operation time and the stability of energy release. Highly efficient lithotripsy can shorten operation time and reduce the risk of thermal damage to surrounding tissues. For example, the tissue penetration depth of a holmium laser is only 0.4 mm; if the lithotripsy efficiency is low and repeated operations are performed, the probability of ureteral perforation or kidney injury may increase. Therefore, when designing and using laser lithotripters, it is necessary to test and calibrate the lithotripsy efficiency to ensure that it meets clinical requirements.

[0004] However, in the field of laser lithotripsy, especially in the research of laser lithotripsy applied under endoscopy, existing devices generally suffer from problems such as high cost and complex use, resulting in high detection costs and significant differences between detection results and clinical practice.

[0005] Based on the above, there is an urgent need for an in vitro laser lithotripsy efficiency testing device to solve the aforementioned technical problems. Utility Model Content

[0006] The purpose of this invention is to provide an extracorporeal laser lithotripsy efficiency testing device that can detect lithotripsy efficiency at low cost and high efficiency, and the test results are more accurate.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] An extracorporeal laser lithotripsy efficiency testing device includes:

[0009] A container having a first inner cavity and a first opening and a second opening communicating with the first inner cavity, the first opening being for inserting a laser fiber, and the second opening being located at the bottom of the container;

[0010] The liquid injection mechanism is connected to the container and is capable of injecting liquid into the first inner cavity;

[0011] A collector having a third opening and at least one fourth opening, the third opening being disposed at the top of the collector and the fourth opening being disposed at the bottom of the collector, the third opening and the fourth opening being connected, and a second opening being connected to the third opening, wherein the opening size of the fourth opening is not greater than the opening size of the second opening.

[0012] Preferably, the extracorporeal laser lithotripsy efficiency testing device further includes a connector, which is detachably installed at the third opening. The connector is used to fix the container and the collector together and to connect the third opening and the second opening.

[0013] Preferably, the connector is inserted into the third opening, and the connector has a connection port, the container has a protrusion, the second opening is disposed on the protrusion, and the protrusion can be inserted into the connection port.

[0014] Preferably, the first inner cavity has a conical or partially conical inner wall, and the cross-sectional area of ​​the first inner cavity is increased along the direction away from the second opening.

[0015] Preferably, the container is a syringe.

[0016] Preferably, the container has a transparent portion through which the first inner cavity can be observed.

[0017] Preferably, the connector is a rubber plug.

[0018] Preferably, the extracorporeal laser lithotripsy efficiency testing device further includes a fixing mechanism for fixing the container and / or the collector.

[0019] Preferably, the extracorporeal laser lithotripsy efficiency testing device includes at least two containers, and the two containers have second openings with different opening sizes.

[0020] Preferably, the extracorporeal laser lithotripsy efficiency detection device further includes a liquid receiving tank located below the collector, which is used to receive the liquid.

[0021] The beneficial effects of this in vitro laser lithotripsy efficiency testing device are as follows: This device not only simulates in vivo lithotripsy conditions in vitro, making the testing of lithotripsy efficiency more closely resemble clinical practice, but also distinguishes the particles formed after lithotripsy based on size, thereby evaluating the lithotripsy effect and guiding parameter settings in clinical practice. Furthermore, the device has a simple structure, and calculation results reflecting lithotripsy efficiency can be obtained through visual observation and weight measurement. It also allows for further detection of the particle size distribution of laser lithotripsy, thus more effectively guiding clinical practice. Attached Figure Description

[0022] Figure 1 This is a perspective view of an in vitro laser lithotripsy efficiency testing device provided by this utility model;

[0023] Figure 2 This is an exploded view of an extracorporeal laser lithotripsy efficiency testing device provided by this utility model;

[0024] Figure 3 This is a top view of an extracorporeal laser lithotripsy efficiency testing device provided by this utility model;

[0025] Figure 4 It is along Figure 3 Cross-sectional view along the AA direction;

[0026] Figure 5 This is a top view of another in vitro laser lithotripsy efficiency testing device provided by this utility model;

[0027] Figure 6 This is a perspective view of another in vitro laser lithotripsy efficiency testing device provided by this utility model;

[0028] Figure 7 It is along Figure 5 Cross-sectional view along the BB direction.

[0029] In the picture:

[0030] 100. Laser fiber;

[0031] 1. Container; 11. First opening; 12. Second opening; 2. Collector; 21. Third opening; 22. Fourth opening; 31. Injection tube; 4. Connector; 41. Connection port; 5. Fixing mechanism; 51. Base; 52. Push plate; 53. Screw; 54. Handle; 6. Receiving tank. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0033] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0036] The following is based on the appendix Figure 1 To be continued Figure 7 This invention introduces the extracorporeal laser lithotripsy efficiency testing device provided by this utility model.

[0037] like Figure 1 , Figure 2As shown, in this embodiment, the in vitro laser lithotripsy efficiency testing device mainly includes a container 1, a collector 2, and a liquid injection mechanism, with the container 1 and the collector 2 connected together. The container 1 has a first inner cavity, with a first opening 11 at its top and a second opening 12 at its bottom. Both the first opening 11 and the second opening 12 are connected to the first inner cavity. The first inner cavity can hold the stone to be tested, and the laser fiber 100 can be inserted into the first inner cavity through the first opening 11 to irradiate and pulverize the stone, thereby performing the in vitro laser lithotripsy process.

[0038] The injection mechanism includes a reservoir, an injection pump, and an injection pipe 31. The injection pump is connected to the reservoir and container 1 via the injection pipe 31 and can inject liquid into the first inner cavity to simulate lithotripsy conditions within the body. As the stone is crushed, it breaks down into multiple particles. When the size of the particles is smaller than the second opening 12, they will leave the container 1 through the second opening 12 under the influence of liquid and gravity. When the size of the particles is larger and cannot pass through the second opening 12, the operator can continue to use laser irradiation and crushing until all the particles formed can be discharged through the second opening 12, thus completing the lithotripsy process. By detecting the weight of the stone and the time it takes for all the particles to be discharged from the container 1, and then coupling the weight detection results and the time detection results through a preset calculation method, a calculation result that reflects the lithotripsy efficiency can be obtained.

[0039] Collector 2 has a second inner cavity, and its top has a third opening 21, while its bottom has at least one fourth opening 22. Both the third and fourth openings 21 and 22 are connected to the second inner cavity. The second opening 12 and the third opening 21 are connected, allowing particles to enter the second inner cavity through the third opening 21 after passing through the second opening 12. The opening size of the fourth opening 22 is no larger than that of the second opening 12, enabling at least a portion of the particles to be retained in the collection bottle, specifically particles with sizes between the second and fourth openings 12 and 22. In other words, collector 2 can separate particles according to size, thereby enabling further detection of the particle size distribution in laser lithotripsy.

[0040] This in vitro laser lithotripsy efficiency testing device not only simulates in vivo lithotripsy conditions in vitro, making the testing of lithotripsy efficiency more closely resemble clinical practice, but also distinguishes the particles formed after lithotripsy according to size, thereby evaluating the lithotripsy effect and guiding parameter settings in clinical practice. Furthermore, the device has a simple structure, and lithotripsy efficiency can be calculated through visual observation and weight measurement, and the particle size distribution of laser lithotripsy can be further detected, thus more effectively guiding clinical practice.

[0041] Optionally, in this embodiment, as Figures 2 to 4 As shown, the extracorporeal laser lithotripsy efficiency testing device also includes a connector 4, which is detachably installed at the third opening 21. The connector 4 is used to fix the container 1 and the collector 2 together and to connect the third opening 21 and the second opening 12.

[0042] Specifically, in this embodiment, the collector 2 is a collection bottle, and the third opening 21 is the bottle mouth. The connector 4 is inserted into the bottle mouth, and the connector 4 has a through-hole 41. The container 1 has a protrusion, and the second opening 12 is located on the protrusion. The protrusion can be inserted into the through-hole 41, thereby connecting the third opening 21 and the second opening 12, and fixing the collector 2 and the container 1 together. A fourth opening 22 can be formed by making a hole at the bottom of the collection bottle. The number of fourth openings 22 can be one or more, and the arrangement of multiple fourth openings 22 is not limited in this invention, as long as it can achieve the screening effect for particles of different sizes.

[0043] Preferably, in this embodiment, the container 1 is a syringe, and the injection port of the syringe can serve as the second opening 12. The front end of the syringe can also be easily inserted into the connection port 41. The syringe has transparent or semi-transparent sidewalls, which constitute a transparent section, allowing the operator to easily observe whether the stone-breaking process has been completed. Furthermore, the syringe is a readily available standard component, available in various sizes, which can match different experimental needs, hold stones of different sizes, and greatly reduce the structural cost of the device.

[0044] Optionally, in some embodiments, other containers with transparent portions may be used as the aforementioned container 1. For example, glassware or resin or other containers capable of forming transparent portions may be used, as long as they have the aforementioned first opening 11, second opening 12, and first inner cavity, they fall within the scope of protection of this utility model.

[0045] Preferably, in this embodiment, the connector 4 is a rubber stopper. The rubber stopper can be easily installed at the mouth of the collection bottle, and the aforementioned connection port 41 can be formed on the rubber stopper. When the front end structure of the syringe is inserted into the connection port 41, it can be stably connected to the rubber stopper, thereby simplifying the process of fixing and connecting.

[0046] Of course, in some other embodiments, a connecting pipe or similar structure can be used to connect the container 1 and the collector 2. For example, a rigid pipe can be used as the connecting pipe. The upper end of the rigid pipe is fixedly connected to the container 1 by means of clamps, snap-fit ​​connections, etc., and communicates with the second opening 12. The lower end of the rigid pipe is fixedly connected to the collector 2 by means of clamps, snap-fit ​​connections, etc., and communicates with the third opening 21. In this way, the container 1 and the collector 2 can be fixedly connected, and the second opening 12 and the third opening 21 can be connected through the rigid pipe.

[0047] like Figures 5 to 7 As shown, in this embodiment, the in vitro laser lithotripsy efficiency testing device also includes a liquid receiving tank 6, which is located below the collector 2. The liquid receiving tank 6 is used to collect liquid, thereby preventing liquid flow and contamination of the test environment. By setting up the liquid receiving tank 6, the restoration and cleaning of the device can be greatly facilitated, which is beneficial to improving the efficiency of multiple tests of the device.

[0048] Furthermore, the extracorporeal laser lithotripsy efficiency testing device also includes a fixing mechanism 5, which is used to fix at least one of the container 1 and the collector 2, thereby simplifying the operation of the operator and reducing the testing burden.

[0049] Preferably, in some embodiments, such as Figure 6 , Figure 7 As shown, the fixing mechanism 5 includes a base 51, a push plate 52, a screw 53, and a handle 54. The base 51 has two protrusions; one protrusion engages with the push plate 52 to clamp and fix the collector 2, and the other protrusion has a threaded hole for threaded connection with the screw 53. One end of the screw 53 is rotatably connected to the push plate 52, and the other end is fixedly connected to the handle 54. When the operator rotates the handle 54 clockwise, the push plate 52 moves under the action of the screw 53, thereby clamping and fixing the collector 2 with the protrusion. When the operator rotates the handle 54 counterclockwise, the push plate 52 moves in the opposite direction, releasing the collector 2 from between the protrusion and the push plate 52.

[0050] Optionally, in this embodiment, the device includes at least two containers 1, and the two containers 1 have second openings 12 with different opening sizes. Depending on the testing requirements, the operator can selectively use a container 1 with a suitable second opening 12 size. For example, when the test standard is that the pulverized material is no larger than 5mm, a container 1 with a second opening 12 of 5mm diameter can be selected; when the test standard is that the pulverized material is no larger than 3mm, a container 1 with a second opening 12 of 3mm diameter can be selected.

[0051] Similarly, the device may further include at least two collectors 2, and the two collectors 2 have a fourth opening 22 with different opening sizes. Depending on the testing requirements, the operator can selectively use a collector 2 with a suitable fourth opening 22 size. For example, when it is necessary to calculate the proportion of particles larger than 3mm in all particles after crushing, a collector 2 with a fourth opening 22 of 3mm in diameter can be selected; when it is necessary to calculate the proportion of particles larger than 2mm in all particles after crushing, a collector 2 with a fourth opening 22 of 2mm in diameter can be selected. Therefore, the specific opening size of the fourth opening 22 is not limited in this invention, as long as it can effectively distinguish particles according to size.

[0052] Specifically, when using the aforementioned in vitro laser lithotripsy efficiency testing device, the front end of the syringe can first be inserted into the rubber stopper, and the rubber stopper can be installed onto the collection bottle to form a fixed connection. Then, the collection bottle is installed into the fixing mechanism 5 to ensure the stability of the device during the test. Then, the stone is placed into the syringe, and the injection tube 31 and the laser fiber 100 are inserted into the syringe to simulate the lithotripsy process under in vivo conditions.

[0053] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0054] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An extracorporeal laser lithotripsy efficiency testing device, characterized in that, include; A container (1) having a first inner cavity and a first opening (11) and a second opening (12) communicating with the first inner cavity, the first opening (11) being used to insert a laser fiber (100), and the second opening (12) being located at the bottom of the container (1). The liquid injection mechanism is connected to the container (1) and is capable of injecting liquid into the first inner cavity; Collector (2), the collector (2) having a third opening (21) and at least one fourth opening (22), the third opening (21) being disposed at the top of the collector (2), the fourth opening (22) being disposed at the bottom of the collector (2), the third opening (21) and the fourth opening (22) being connected, the second opening (12) and the third opening (21) being connected, the opening size of the fourth opening (22) being no larger than the opening size of the second opening (12).

2. The extracorporeal laser lithotripsy efficiency detection device according to claim 1, characterized in that, The extracorporeal laser lithotripsy efficiency testing device also includes a connector (4), which is detachably installed at the third opening (21). The connector (4) is used to fix the container (1) and the collector (2) together and to connect the third opening (21) and the second opening (12).

3. The extracorporeal laser lithotripsy efficiency detection device according to claim 2, characterized in that, The connector (4) is inserted into the third opening (21), and the connector (4) has a connection port (41). The container (1) has a protrusion, the second opening (12) is disposed on the protrusion, and the protrusion can be inserted into the connection port (41).

4. The extracorporeal laser lithotripsy efficiency detection device according to claim 3, characterized in that, The first inner cavity has a conical or partially conical inner wall, and the cross-sectional area of ​​the first inner cavity is increased along the direction away from the second opening (12).

5. The extracorporeal laser lithotripsy efficiency testing device according to claim 4, characterized in that, The container (1) is a syringe.

6. The extracorporeal laser lithotripsy efficiency detection device according to claim 4, characterized in that, The container (1) has a transparent portion through which the first inner cavity can be observed.

7. The extracorporeal laser lithotripsy efficiency detection device according to claim 3, characterized in that, The connector (4) is a rubber plug.

8. The extracorporeal laser lithotripsy efficiency testing device according to claim 1, characterized in that, The extracorporeal laser lithotripsy efficiency testing device also includes a fixing mechanism (5), which is used to fix the container (1) and / or the collector (2).

9. The extracorporeal laser lithotripsy efficiency detection device according to claim 8, characterized in that, The extracorporeal laser lithotripsy efficiency testing device includes at least two containers (1), and the two containers (1) have second openings (12) with different opening sizes.

10. The extracorporeal laser lithotripsy efficiency testing device according to claim 1, characterized in that, The extracorporeal laser lithotripsy efficiency detection device also includes a liquid receiving tank (6), which is located below the collector (2) and is used to receive the liquid.

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