A foot-operated negative pressure gas volume regulating device and a ureteroscope lithotripsy instrument

Abstract

The present application provides a foot-operated negative pressure volume regulating device and a ureteroscope lithotripsy instrument, comprising: a main negative pressure pipeline and multiple negative pressure branches; multiple layers of pressure members, the multiple layers of pressure members being spaced apart and forming pressure regulating spaces between adjacent pressure members, the multiple negative pressure branches being respectively arranged in the multiple pressure regulating spaces, the pressure members on both sides of the pressure regulating spaces being upper and lower pressure members; multiple elastic return members, the multiple elastic return members connecting adjacent pressure members; a locking mechanism, the locking mechanism having a locking state for locking the lower pressure members between adjacent pressure regulating spaces, and an unlocking state for enabling the lower pressure members to move when the upper pressure member moves downward; the upper pressure member being forced downward to reduce the diameter of the negative pressure branch, and the unlocking of the locking mechanism allowing the diameters of the multiple negative pressure branches to be reduced layer by layer. The present application solves the problem of the inconvenience of using a handheld valve for negative pressure regulation in the prior art.

Description

Technical Field

[0001] The present application relates to the field of urological medical devices, and in particular to a foot-operated negative pressure gas volume regulating device and a ureteroscope lithotripsy instrument. Background Art

[0002] Existing flexible ureteroscopes require negative pressure to aspirate lithotripsy during surgery. During use, the negative pressure must be adjusted based on the lithotripsy situation, increasing or decreasing it to create the appropriate negative pressure to successfully aspirate lithotripsy from the patient's urinary system.

[0003] Existing ureteroscopes use a handheld valve to adjust the negative pressure. This valve requires the surgeon to hold and adjust it with his or her free hand. However, during lithotripsy surgery, surgeons often need to use both hands to coordinate the operation, leaving them with no free time to operate the handheld valve. Therefore, using the handheld valve to adjust the negative pressure is extremely inconvenient.

[0004] Therefore, the existing technology still needs to be improved and developed. Summary of the Invention

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of this application is to provide a foot-operated negative pressure gas volume regulating device and a ureteroscope lithotripsy instrument, which solves the problem that the process of using a handheld valve for negative pressure regulation in the prior art is extremely inconvenient.

[0006] In one aspect, the present application provides a foot-operated negative pressure air volume regulating device, comprising: a main negative pressure pipeline, the main negative pressure pipeline being used to deliver negative pressure;

[0007] Multiple negative pressure branch pipes are connected in parallel to the main negative pressure pipe;

[0008] Multiple layers of pressing parts are arranged at intervals and form a pressure regulating space between adjacent pressing parts. Multiple negative pressure branches are respectively passed through the multiple pressure regulating spaces. The pressing parts on both sides of the pressure regulating space are respectively an upper pressing part and a lower pressing part.

[0009] A plurality of elastic return members, each of which is disposed in the pressure regulating space and connected to adjacent pressing members;

[0010] a locking mechanism having a locked state for locking the lower pressing member between adjacent pressure-adjusting spaces, and an unlocked state for enabling the lower pressing member to move by downward movement of the upper pressing member;

[0011] The upper pressing member is forced to move downward to reduce the diameter of the negative pressure branch pipe, and the locking mechanism is unlocked to reduce the diameters of the multiple negative pressure branch pipes layer by layer.

[0012] Optionally, the locking mechanism includes: an upper wedge block, wherein the upper wedge block has an upper inclined surface on a side facing away from the lower pressing piece, and the upper inclined surface gradually inclines downward in a direction toward the center of the lower pressing piece;

[0013] A lower wedge block is spaced apart from the upper wedge block to form a locking space, the locking space being used to be sleeved on the outer side of the lower pressing piece to lock the lower pressing piece, the lower wedge block having a lower inclined surface on a side facing away from the lower pressing piece, the lower inclined surface gradually inclining upward along a direction toward the center of the lower pressing piece;

[0014] A push elastic member is used to connect the upper wedge block and the lower wedge block.

[0015] Optionally, the locking mechanism further comprises: a locking frame connecting the upper wedge block and the lower wedge block so that the height of the locking space between the upper wedge block and the lower wedge block is greater than the thickness of the lower pressing piece;

[0016] One end of the push elastic member is connected to the lock frame, and the other end is fixed.

[0017] Optionally, a pressing block is provided at the lower end of the upper pressing member and the lower end of the lower pressing member;

[0018] The lower end of the pressing member is provided with a pressing surface, and the upper inclined surface is pressed by the pressing surface to push the locking mechanism.

[0019] Optionally, an avoidance groove is provided on the lower wedge block, and the opening of the avoidance groove faces the center direction of the lower pressing piece of the lower layer;

[0020] The avoidance groove is used for being sleeved on the outer side of the lower pressing block.

[0021] Optionally, the multi-layer pressing member includes: a lower pressing plate, wherein an edge of an upper surface of the lower pressing plate is provided with a return pushing surface, the return pushing surface being used to press the lower inclined surface to push the locking mechanism;

[0022] A pipe pressing boss is arranged on the lower surface of the lower pressing plate, and the negative pressure branch pipe is arranged on the pipe pressing boss.

[0023] Optionally, the elastic return member includes: a plurality of return springs, and the plurality of return springs are arranged around the central axis of the lower pressure plate.

[0024] Optionally, the main negative pressure pipeline comprises a first main pipe section and a second main pipe section, and the first main pipe section and the second main pipe section are respectively connected to a plurality of negative pressure branch pipes via a multi-vent pipe joint;

[0025] One end of the first main pipe section is connected to a first air pipe joint, and the first air pipe joint is used to connect to an external negative pressure device;

[0026] One end of the second main pipe section is connected to a second tracheal connector, and the second tracheal connector is used to connect a negative pressure surgical instrument.

[0027] Optionally, the foot-operated negative pressure air volume regulating device further comprises: a housing, a mounting cavity being provided in the housing, a plurality of pressing members being movably provided in the housing at intervals in the vertical direction, and a locking mechanism being provided on a side wall of the housing;

[0028] The pressing structure is located outside the shell and is connected to the uppermost pressing piece.

[0029] On the other hand, the present application also proposes a ureteroscopic lithotripsy device, comprising the foot-operated negative pressure air volume regulating device and a ureteroscopic lithotripsy device as described above, wherein the ureteroscopic lithotripsy device can be detachably connected to the negative pressure output end of the main negative pressure pipeline of the foot-operated negative pressure air volume regulating device.

[0030] Beneficial Effects: The present invention relates to a foot-operated negative pressure volume regulating device and a flexible ureteroscope lithotripsy instrument. The device divides the main negative pressure pipeline into multiple negative pressure branches and provides multiple layers of pressure-down components to form a pressure-regulating space between adjacent layers of pressure-down components. Each layer of pressure-regulating space accommodates a negative pressure branch. During lithotripsy, the doctor directly presses down on the topmost pressure-down component by stepping on it. Due to the action of the locking mechanism, the negative pressure branches within the topmost pressure-regulating space are gradually compressed. During the compression process, the topmost negative pressure branch is closed, while the other negative pressure branches remain open, thereby reducing the negative pressure. The doctor continues to apply force, and the locking mechanism is unlocked, thereby unlocking the second layer of pressure-down components and pressing them downward. This allows the second layer of negative pressure branches to be compressed and the channel to be closed, further reducing the volume of air. Similarly, the pressure-regulating space can be compressed layer by layer to gradually reduce the negative pressure. Slowly releasing the foot, the elastic return component returns the pressure-down components of each layer to their original positions, restoring the original negative pressure volume. Thereby, the negative pressure branch pipes from top to bottom are compressed and closed layer by layer, so that the negative pressure can be adjusted by pedaling. In addition, multiple locking mechanisms are set to lock and release the lower pressure members. When the upper pressure member of the previous layer is about to be pressed to the limit, the lower pressure member of the next layer begins to unlock. In this way, the function of unlocking the negative pressure branch pipes of each layer layer by layer as the pedal pressure increases can be achieved. The more pressure members are set, the more layers of pressure-regulating space are formed, and the more negative pressure branches are set, the finer the control, so that fine control of negative pressure can be achieved. Not only does it relieve the burden on the doctor's hands during surgery, but it also achieves step-by-step fine control through pedaling, making it more convenient for doctors to use the negative pressure process during surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a cross-sectional view of a foot-operated negative pressure air volume regulating device according to an embodiment of the present application.

[0032] Figure 2 for Figure 1 Enlarged view of point A.

[0033] Figure 3 This is a cross-sectional view of a locking mechanism of a foot-operated negative pressure air volume regulating device according to an embodiment of the present application.

[0034] Figure 4 This is a schematic diagram of the structural principle of a foot-operated negative pressure air volume regulating device in an embodiment of the present application, in which the main negative pressure pipeline is arranged in a shell.

[0035] Figure 5 This is a schematic structural diagram of a ureteroscopic lithotripsy device according to an embodiment of the present application.

[0036] Figure: 10, foot-operated negative pressure air volume adjustment device; 20, negative pressure equipment; 30, ureteral lithotripsy soft endoscope; 100, housing; 110, mounting cavity; 120, mounting port; 200, main negative pressure pipe; 210, negative pressure branch pipe; 220, first main pipe section; 221, first tracheal joint; 230, second main pipe section; 231, second tracheal joint; 240, multi-ventilation pipe joint; 300, downcomer; 310, upper downcomer; 320, lower downcomer; 321, downcomer plate; 322, Return push surface; 323, tube pressing boss; 330, pressure regulating space; 340, lower pressure block; 341, extrusion surface; 400, elastic return member; 500, locking mechanism; 510, upper wedge block; 511, upper inclined surface; 520, lower wedge block; 521, lower inclined surface; 522, avoidance groove; 530, locking frame; 540, push elastic member; 550, locking space; 600, pressing structure; 610, first hinge seat; 620, foot pedal; 621, second hinge seat; 630, connecting pressure rod. DETAILED DESCRIPTION

[0037] To make the purpose, technical solutions and advantages of this application clearer and more explicit, the following further describes this application in detail with reference to the accompanying drawings and examples. It should be understood that the specific examples described herein are only used to explain this application and are not intended to limit this application.

[0038] The existing use of handheld valves for negative pressure adjustment not only causes surgical inconvenience due to the need for manual operation by the surgeon, but also presents challenges with the surgeon's ability to control the pressure applied by the foot, making it difficult to control the negative pressure during the adjustment process. Consequently, increasing or decreasing the negative pressure during surgery lacks precise control, further inconveniencing the surgeon. Therefore, the present application addresses the aforementioned issues through the following embodiments.

[0039] like Figure 5As shown, this embodiment proposes a foot-operated negative pressure volume regulating device 10, which is mainly used as a negative pressure valve for connecting an external negative pressure device 20 and various negative pressure surgical instruments for operation, thereby providing negative pressure through the negative pressure device 20. The doctor can adjust the negative pressure provided by the negative pressure device 20 through the foot-operated negative pressure volume regulating device, thereby controlling the negative pressure output by the negative pressure surgical instrument. The negative pressure surgical instrument can be a ureteral lithotripsy soft mirror 30, or other surgical instruments requiring negative pressure. Therefore, Figure 1 As shown, the foot-operated negative pressure air volume regulating device 10 has a housing 100, and a mounting cavity 110 is provided in the housing 100. The housing 100 serves as the main bearing support structure and provides mounting positions for various components. Figure 1 、 Figure 4 、 Figure 5 As shown, the foot-operated negative pressure air volume regulating device 10 also includes: a main negative pressure pipeline 200, a plurality of negative pressure branches 210, a multi-layer pressing member 300, a plurality of elastic return members 400 and a locking mechanism 500. The two ends of the main negative pressure pipeline 200 are respectively used to connect to the external negative pressure device 20 and the negative pressure surgical instrument (ureteral lithotripsy soft mirror 30) to deliver negative pressure. The plurality of negative pressure branches 210 are connected in parallel to the main negative pressure pipeline 200, so that the negative pressure on the main negative pressure pipeline 200 can be diverted. Specifically, the plurality of negative pressure branches 210 are arranged on the main negative pressure pipeline 200, so that the main negative pressure pipeline 200 forms a plurality of branches, and the negative pressure delivery channel formed by the main negative pressure pipeline 200 and the plurality of negative pressure branches 210 passes through the installation cavity 110 of the shell 100. The multiple layers of pressing members 300 are arranged in the installation cavity 110 of the shell 100 at intervals, and a pressure regulating space 330 is formed between adjacent pressing members 300. A plurality of negative pressure branches 210 are respectively arranged in the plurality of pressure regulating spaces 330, and the pressing members 300 on both sides of the pressure regulating space 330 are respectively the upper pressing member 310 and the lower pressing member 320; in the specific structure, the shell 100 is provided with an installation cavity 110, and the multiple layers of pressing members 300 are spaced and movably arranged in the shell 100 along the vertical direction, thereby forming multiple layers of pressure regulating space 330 in the vertical direction. Taking the uppermost pressure regulating space 330 as an example, the pressure regulating space 330 is formed by the first pressing member 310 of the uppermost layer. 00 and the second pressing member 300 below, therefore, when describing the structure, the first pressing member 300 of the upper layer is the upper pressing member 310, and the second pressing member 300 of the lower layer is the lower pressing member 320; the corresponding second layer pressure regulating space 330 is formed by the second pressing member 300 and the third pressing member 300 below, therefore, for this layer of pressure regulating space 330, the second pressing member 300 is the upper pressing member 310, the third pressing member 300 is the lower pressing member 320, and so on.

[0040] like Figure 1 、 Figure 4 、 Figure 5 As shown, for the convenience of structural description, this embodiment uses the topmost pressure regulating space 330 as an example for structural explanation. The elastic return member 400 is disposed between the upper and lower adjacent pressing members 300. Therefore, an elastic return member 400 is present in each pressure regulating space 330 and connects the adjacent pressing members 300. The locking mechanism 500 can be disposed on the side wall of the housing 100. The locking mechanism 500 has a locked state for locking the lower pressing members 320 between adjacent pressure regulating spaces 330, and an unlocked state for enabling the lower pressing members 320 to move by downward movement of the upper pressing member 310. When the upper pressing member 310 is compressed further and the locking mechanism 500 is driven to unlock, the lower pressing member 320 can be squeezed to move, thereby compressing the pressure regulating space 330 of the next layer, and then the negative pressure branch pipe 210 of the next layer can be reduced or even closed. By analogy, the gradual closing of multiple negative pressure branch pipes 210 can be achieved, and the step-by-step regulation of negative pressure can be achieved. Therefore, this structure can realize that the upper pressing member 310 is forced to move downward to reduce the diameter of the negative pressure branch pipe 210, and the locking mechanism 500 is unlocked to reduce the diameters of the multiple negative pressure branch pipes 210 layer by layer.

[0041] like Figure 1 、 Figure 4 、 Figure 5As shown, the present application discloses a foot-operated negative pressure gas volume regulating device, which divides the main negative pressure pipe 200 into multiple negative pressure branches 210 and provides multiple layers of pressing members 300 to form pressure regulating spaces 330 between two adjacent layers of pressing members 300, so that the multiple layers of pressure regulating spaces 330 respectively accommodate the negative pressure branches 210. During lithotripsy, the doctor directly presses down the uppermost layer of pressing members 300 by stepping on them. Due to the action of the locking mechanism 500, the negative pressure branches 210 in the uppermost layer of pressure regulating space 330 are gradually compressed. During the compression process, the uppermost layer of negative pressure branches 210 are closed, while the other negative pressure branches 210 remain open, thereby reducing the negative pressure. The doctor continues to exert force, and the locking mechanism 500 is opened, thereby unlocking the second layer of the pressing member 300 and pressing it downward. In this way, the second layer of the negative pressure branch 210 is compressed and the channel is closed, further reducing the air volume. By analogy, the pressure regulating space 330 is compressed layer by layer, and the negative pressure is gradually reduced. Slowly releasing the foot, the elastic return member 400 returns the pressing members 300 of each layer to the original position, restoring the original negative pressure air volume. This realizes the function of the negative pressure branch 210 being compressed and closed layer by layer from top to bottom, so that the negative pressure can be adjusted by foot. In addition, multiple locking mechanisms 500 are provided to lock and release the lower layer of the pressing member 320. When the upper layer of the pressing member 310 is about to be pressed to the limit, the lower layer of the pressing member 320 of the next layer begins to unlock. In this way, the negative pressure branch 210 of each layer is unlocked layer by layer as the foot pressure increases. The more downward pressure members 300 are provided, the more layers of pressure-regulating spaces 330 are formed. Consequently, the more negative pressure branches 210 are provided, the more precise the control is, thereby achieving fine-grained control of the negative pressure. This not only relieves the burden on the surgeon's hands during surgery, but also enables step-by-step fine-grained control through foot pedaling, making it more convenient for the surgeon to use negative pressure during surgery.

[0042] like Figure 1 、 Figure 2 、 Figure 3As shown, the sidewall of the housing 100 in this embodiment is provided with a plurality of mounting openings 120 spaced apart in the vertical direction. The openings of the mounting openings 120 are connected to the mounting cavity 110 on the inner side. For the convenience of structural description, the direction toward the central axis of the mounting cavity 110 is considered to be the inner side, and the direction away from the central axis of the mounting cavity 110 is considered to be the outer side. The locking mechanism 500 is installed in the mounting opening 120. Except for the first layer of the pressing member 300, each movable pressing member 300 in the middle (the lower pressing member 320 of each layer) has a corresponding locking mechanism 500, which is locked in the initial state by the locking mechanism 500. The locking mechanism 500 of this embodiment specifically includes: an upper wedge block 510, a lower wedge block 520, and a push elastic member 540. The upper wedge 510 extends radially inward by a predetermined length and is positioned within the mounting opening 120. One side of the upper surface of the upper wedge 510 has an upper inclined surface 511 located at the inner end of the upper surface of the upper wedge 510. The upper inclined surface 511 gradually slopes downward toward the center of the lower pressing member 320. The lower wedge 520 is positioned below the upper wedge 510 and spaced apart from the upper wedge 510 to form a locking space 550. The locking space 550 is designed to fit over the outer side of the lower pressing member 320 to lock the lower pressing member 320. A push elastic member 540 is mounted within the mounting opening 120 and connects the upper wedge 510 and the lower wedge 520. The push elastic member 540 can be retracted into the mounting opening 120 when subjected to force and rebounds to its initial position when the force is released.

[0043] When the upper pressing piece 310 moves downward, it contacts the upper inclined surface 511 of the upper wedge block 510. Since the upper inclined surface 511 gradually tilts downward from the outside to the inside, the upper pressing piece 310 continues to move downward and applies a radial outward push to the upper inclined surface 511. When the upper wedge block 510 and the lower wedge block 520 are subjected to an outward thrust, the pushing elastic member 540 is compressed into the installation opening position 120, thereby causing the upper wedge block 510 and the lower wedge block 520 to retract into the installation opening position 120. In this way, the locking space 550 moves outward as a whole, thereby causing the inner pressing piece 300 to disengage from the locking space 550, thereby unlocking the inner pressing piece 300.

[0044] like Figure 2 、 Figure 3As shown, the lower wedge block 520 of this embodiment has a lower inclined surface 521 on the side facing away from the lower layer pressing piece 320. The lower inclined surface 521 is located at the inner end of the lower surface of the lower wedge block 520, and the lower inclined surface 521 gradually tilts upward along the center direction of the lower layer pressing piece 320. When the user retracts his feet without applying pressure to the upper layer pressing piece 310, the upper layer pressing piece 310 and the lower layer pressing piece 320 move upward under the action of the return elastic force of the elastic return member 400. Taking the lower layer pressing block 340 as an example (the upper layer pressing block 340 is the same), when the lower layer pressing block 340 abuts against the lower inclined surface 521, since the lower inclined surface 521 gradually tilts upward along the direction from outside to inside, the lower layer pressing block 340 continues to move upward under the thrust of the elastic return member 400, and the lower inclined surface 521 gradually tilts upward. 21 applies a radial outward push. When the lower wedge block 520 is pushed outward, the push elastic member 540 is compressed into the installation opening 120, so that the lower layer lower pressure block 340 moves to its original position corresponding to the locking space 550. At this time, under the action of the push elastic member 540, the upper wedge block 510 and the lower wedge block 520 are pushed out of the installation opening 120, so that the locking space moves inward as a whole, so that the inner layer lower pressure member 300 is stuck in the locking space, thereby realizing the re-locking of the inner layer lower pressure member 300.

[0045] like Figure 2 、 Figure 3 As shown, the upper inclined surface 511 and the lower inclined surface 521 in this embodiment have different degrees of inclination. In the specific structure, the acute angle formed between the upper inclined surface 511 and the central axis of the installation cavity 110 is greater than the acute angle formed between the lower inclined surface 521 and the central axis of the installation cavity 110. As a result, the upper inclined surface 511 is relatively gentle, while the lower inclined surface 521 is relatively steep. This makes it easier for the user to press the upper inclined surface 511 to push the locking mechanism 500, allowing the user to apply more force during use, giving the user an intuitive sense of control and facilitating user control. During the return process, the steeper lower inclined surface 521 requires less force to push the locking mechanism 500, making it easier for each pressing member 300 to pass through the position of the locking mechanism 500 and return to its initial position.

[0046] like Figure 2 、 Figure 3 As shown, further, the locking mechanism 500 of this embodiment also includes: a locking frame 530, the locking frame 530 connects the upper wedge block 510 and the lower wedge block 520, so that the height of the locking space between the upper wedge block 510 and the lower wedge block 520 is greater than the thickness of the lower pressure piece 320 of the lower layer, and the locking frame 530 cooperates with the installation opening position 120, so that the locking frame 530 can slide directionally in the installation opening position 120, and the locking frame 530 provides a mounting position for the push elastic member 540, so that one end of the push elastic member 540 is connected to the locking frame 530 and the other end is fixedly set on the inner wall of the installation opening position 120.

[0047] like Figure 2 、 Figure 3 As shown, in order to achieve stable locking of the locking mechanism 500 with the pressing members 300 of each layer in the initial state and to ensure that the pressing members 300 can still return to the initial state during the return process, the thickness of the pressing members 300 of each layer is set to be different, so the height of the opening of the pressure regulating space 330 of each layer is also different. Specifically, the thickness of the pressing members 300 of the multiple layers gradually decreases from top to bottom, and the height of the opening of the corresponding pressure regulating space 330 of each layer also gradually decreases. Then, during the return process, the pressing members 300 on the upper layer will not be stuck in the pressure regulating space 330 of the lower layer, and can only return to the pressure regulating space 330 corresponding to it.

[0048] like Figure 1 、 Figure 2 As shown, further, in this embodiment, the lower ends of the upper pressing member 310 and the lower ends of the lower pressing member 320 are both provided with a pressing block 340. The main function of the pressing block 340 at the lower end of the lower pressing member 320 is the same as that of the pressing block 340 on the upper pressing member 310. Therefore, taking the upper pressing member 310 as an example, the lower end of the pressing member 300 is provided with a pressing surface 341, which presses the upper inclined surface 511 through the pressing surface 341 to push the locking mechanism 500. The pressing surface 341 can be arc-shaped, which can cooperate with the upper inclined surface 511 to facilitate the application of pressure on the upper inclined surface 511, making it easier to push the upper wedge block 510 and the lower wedge block 520.

[0049] like Figure 2 、 Figure 3 As shown, further, in this embodiment, the lower wedge block 520 is provided with an escape groove 522, the opening of which faces the center of the lower pressing member 320, and the escape groove 522 is arranged radially. The escape groove 522 is used to be sleeved on the outer side of the lower pressing block 340. Therefore, the cooperation between the lower pressing block 340 and the escape groove 522 enables the lower pressing block 340 to not only achieve the effect of concentrated pressure, but also, during the locking process, it is embedded in the escape groove 522, so that the lower pressing member 320 can be locked more stably.

[0050] like Figure 1 、 Figure 4As shown, further, the multi-layer lower pressing member 300 of this embodiment includes: a lower pressing plate 321, and a return pushing surface 322 is provided at the edge of the upper surface of the lower pressing plate 321. The return pushing surface 322 is used to squeeze the lower inclined surface 521 to push the locking mechanism 500. The return pushing surface 322 can be in an arc shape, so as to facilitate the contact with the lower inclined surface 521. A tube pressing boss 323 is provided on the lower surface of the lower pressing plate 321. The tube pressing boss 323 is located in the middle position of the lower pressing plate 321, and its radial width is slightly larger than the outer diameter of the negative pressure branch 210. In this way, the negative pressure branch 210 is placed on the tube pressing boss and can be completely compressed during the extrusion process, thereby achieving stable control of each negative pressure branch 210. The length of the negative pressure branch 210 located in the installation cavity 110 is reserved longer, so that the negative pressure branch 210 has sufficient margin to deform during the compression or return process.

[0051] like Figure 1 、 Figure 4 As shown, further, the elastic return member 400 of this embodiment includes: a plurality of return springs, and the plurality of return springs are arranged around the central axis of the lower pressure plate 321. The lower pressure plate 321 can be circular, and a guide block can be provided at the edge of the circular lower pressure plate 321, which is slidably connected in the shell 100 through the guide block, so that the lower pressure plate 321 can achieve stable directional movement. Four multiple return springs can be provided, which are evenly distributed around the circumference, so as to provide a stable rebound force. Receiving cavities can be provided on the upper and lower surfaces of the lower pressure plate 321, and the return springs are installed in the receiving cavities. When the return springs are compressed, they can be placed in the receiving cavities for contraction, so that the upper and lower adjacent lower pressure plates 321 can be brought closer or even attached to each other.

[0052] like Figure 1 、 Figure 4 As shown, the main negative pressure pipe 200 of this embodiment has a first main pipe section 220 and a second main pipe section 230. The first main pipe section 220 and the second main pipe section 230 are respectively connected to multiple negative pressure branch pipes 210 via multiple vent pipe joints 240. One end of the first main pipe section 220 is connected to a first tracheal joint 221, which is used to connect to external negative pressure equipment; one end of the second main pipe section 230 is connected to a second tracheal joint 231, which is used to connect to negative pressure surgical instruments. The first tracheal joint 221 and the second tracheal joint 231 can be detachably connected, so that the foot-operated negative pressure air volume adjustment device can be connected and used with various other devices, and is applicable to any air volume control device, thereby improving the practicality of the device.

[0053] like Figure 1 、 Figure 5As shown, the foot-operated negative pressure air volume regulating device of this embodiment further includes a pressing structure 600, which is located outside the housing 100 and connected to the uppermost pressing member 300. The user steps on the pressing structure 600 to apply pressure to the pressing member 300, driving the pressing member 300 to squeeze the internal negative pressure branch pipe 210 to achieve negative pressure flow control.

[0054] like Figure 1 、 Figure 5 As shown, the pressing structure 600 of this embodiment specifically includes: a first hinge seat 610, a foot pedal 620 and a connecting pressure rod 630. The first hinge seat 610 is connected to the shell 100, and one end of the foot pedal 620 is hinged on the first hinge seat 610, so that the foot pedal 620 can rotate up and down around the first hinge seat 610. A second hinge seat 621 is provided below the foot pedal 620, and the connecting pressure rod 630 is hinged on the second hinge seat 621. The lower end of the connecting pressure rod 630 is hinged to the upper surface of the uppermost lower pressure piece 300. The user presses the foot pedal 620 with his foot to move the foot pedal 620 downward, thereby pressing the connecting pressure rod 630 downward to push the lower pressure piece 300 downward, thereby achieving the compression and closure of the negative pressure branch pipe 210 to realize the foot control function.

[0055] Example 2

[0056] like Figure 5 As shown, this embodiment also provides a flexible ureteroscopic lithotripsy device, comprising the aforementioned foot-operated negative pressure air volume adjustment device 10 and a flexible ureteroscopic lithotripsy device 30. The flexible ureteroscopic lithotripsy device 30 is a conventional surgical instrument and will not be described in detail. The flexible ureteroscopic lithotripsy device 30 is detachably connected to the negative pressure output end of the main negative pressure conduit of the foot-operated negative pressure air volume adjustment device.

[0057] The foot-operated negative pressure gas volume regulating device 10 is connected to the ureteral lithotripsy soft endoscope 30, so that the negative pressure required by the ureteral lithotripsy soft endoscope can be controlled. The negative pressure can be precisely controlled by stepping on the foot, freeing the doctor's hands, making it more convenient for the doctor to perform surgical operations, and having strong practicality.

[0058] In summary, the foot-operated negative pressure gas volume regulating device and ureteroscope lithotripsy instrument of the present application can not only adjust the negative pressure by foot-operating, but also set multiple locking mechanisms to lock and release the lower pressure piece. When the upper pressure piece of the previous layer is about to be pressed to the limit, the lower pressure piece of the next layer begins to unlock, so that the function of unlocking the negative pressure branch pipes of each layer layer by layer as the foot pressure increases can be achieved. The more pressure pieces are set, the more layers of pressure regulating space are formed, and the more negative pressure branches are set, the finer the control, so that fine control of negative pressure can be achieved. Not only does it relieve the burden on the doctor's hands during surgery, but it also achieves step-by-step fine control through foot-operating, making it more convenient for doctors to use the negative pressure process during surgery.

[0059] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A foot-operated negative pressure air volume regulating device, characterized in that: include: A main negative pressure pipeline, which is used to deliver negative pressure; Multiple negative pressure branch pipes are connected in parallel to the main negative pressure pipe; Multiple layers of pressing members are arranged at intervals and form a pressure regulating space between adjacent pressing members, multiple negative pressure branches are respectively passed through multiple pressure regulating spaces, and the pressing members on both sides of the pressure regulating space are respectively an upper pressing member and a lower pressing member; a plurality of elastic return members, each of which is disposed in the pressure regulating space and connected to adjacent pressing members; a locking mechanism having a locked state for locking the lower pressing member between adjacent pressure-adjusting spaces, and an unlocked state for enabling the lower pressing member to move by downward movement of the upper pressing member; The upper layer pressing member is forced to move downward to reduce the diameter of the negative pressure branch pipe, and the locking mechanism is unlocked to reduce the diameters of the multiple negative pressure branch pipes layer by layer.

2. The foot-operated negative pressure air volume regulating device according to claim 1, characterized in that: The locking mechanism includes: an upper wedge block, wherein the upper wedge block has an upper inclined surface on a side facing away from the lower pressing piece, and the upper inclined surface gradually tilts downward in a direction toward the center of the lower pressing piece; a lower wedge block, the lower wedge block and the upper wedge block being spaced apart to form a locking space, the locking space being used to be sleeved on the outer side of the lower layer pressing piece to lock the lower layer pressing piece, the lower wedge block having a lower inclined surface on a side facing away from the lower layer pressing piece, the lower inclined surface gradually inclining upward along a direction toward the center of the lower layer pressing piece; A push elastic member connects the upper wedge block and the lower wedge block.

3. The foot-operated negative pressure air volume regulating device according to claim 2, characterized in that: The locking mechanism further includes: a locking frame connecting the upper wedge block and the lower wedge block so that the height of the locking space between the upper wedge block and the lower wedge block is greater than the thickness of the lower layer pressing member; One end of the push elastic member is connected to the lock frame, and the other end is fixed.

4. The foot-operated negative pressure air volume regulating device according to claim 2, characterized in that: The lower ends of the upper layer pressing piece and the lower ends of the lower layer pressing piece are both provided with pressing blocks; The lower end of the pressing member has a pressing surface, and the upper inclined surface is pressed by the pressing surface to push the locking mechanism.

5. The foot-operated negative pressure air volume regulating device according to claim 4, characterized in that: The lower wedge block is provided with an avoidance groove, the opening of which faces the center direction of the lower pressing member of the lower layer; The avoidance groove is used to be sleeved on the outer side of the lower pressing block.

6. The foot-operated negative pressure air volume regulating device according to claim 2, characterized in that: The multi-layer pressing member includes: a lower pressing plate, wherein the edge of the upper surface of the lower pressing plate is provided with a return pushing surface, and the return pushing surface is used to press the lower inclined surface to push the locking mechanism; A pipe pressing boss is provided on the lower surface of the lower pressing plate, and the negative pressure branch pipe is provided on the pipe pressing boss.

7. The foot-operated negative pressure air volume regulating device according to claim 6, characterized in that: The elastic return member includes: a plurality of return springs, and the plurality of return springs are arranged around the central axis of the lower pressing plate.

8. The foot-operated negative pressure air volume regulating device according to any one of claims 1 to 7, characterized in that: The main negative pressure pipeline comprises a first main pipe section and a second main pipe section, wherein the first main pipe section and the second main pipe section are respectively connected to a plurality of negative pressure branch pipes via a multi-vent pipe joint; One end of the first main pipe section is connected to a first air pipe joint, and the first air pipe joint is used to connect to an external negative pressure device; One end of the second main pipe section is connected to a second tracheal connector, and the second tracheal connector is used to connect a negative pressure surgical instrument.

9. The foot-operated negative pressure air volume regulating device according to any one of claims 1 to 7, characterized in that: The foot-operated negative pressure air volume regulating device further comprises: a housing, a mounting cavity being provided in the housing, multiple layers of the pressing members being movably provided in the housing at intervals in the vertical direction, and the locking mechanism being provided on a side wall of the housing; A pressing structure is located outside the shell and connected to the uppermost pressing member.

10. A flexible ureteroscope lithotripsy device, characterized in that: It comprises a foot-operated negative pressure volume regulating device as described in any one of claims 1 to 9 and a ureteral lithotripsy soft mirror, wherein the ureteral lithotripsy soft mirror is detachably connected to the negative pressure output end of the main negative pressure pipeline of the foot-operated negative pressure volume regulating device.

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