Medical surgical water jet system

Abstract

The application relates to the technical field of medical equipment, and discloses a medical surgical water jet system which comprises a handle and a head, the head comprises a shield and a jet pipe, the jet pipe is connected with the handle, the shield comprises a positioning block and a shield rod, the positioning block is connected to the front end of the shield rod, the rear end of the shield rod is connected with the handle, the positioning block is provided with a containing cavity and a spraying port in communication with the containing cavity; the shield rod is provided with a rod channel in communication with the containing cavity along the axial direction of the shield rod, the jet pipe is arranged in the rod channel and extends along the axial direction of the rod channel, the front end of the jet pipe is provided with a jet port, the front end of the jet pipe extends into the containing cavity, and the jet port is in communication with the spraying port. The medical surgical water jet system can avoid mis-removal of normal tissues by high-pressure water flow, improve operation safety, and reduce the operation difficulty of the water jet.

Description

Technical Field

[0001] This invention relates to the technical field of medical equipment, and in particular to a medical surgical water jet system. Background Technology

[0002] In modern medical technology, medical surgical water jet systems (or water jets) are gradually demonstrating their enormous potential in precision surgery as a novel surgical tool. Water jet technology uses high-pressure water jets to precisely cut biological tissues, offering significant advantages such as cold cutting, no thermal damage, clean incisions, and minimal bleeding, leading to its widespread application in various clinical specialties.

[0003] However, despite the significant achievements of water jet technology in improving surgical precision and reducing surgical risks, the inventors have discovered that in actual operation, existing water jets cannot initially locate the surgical site. Under the action of high-pressure jets, locating the surgical site is extremely difficult. Secondly, when controlling the water flow through the device switch, the long flow path of the high-pressure liquid results in a lag in shutting it off. When the power pump stops pressurizing, the nozzle is still spraying high-pressure water, which poses a risk of damaging normal tissue in non-surgical target areas. Alternatively, the power pump can be shut off in advance when only a very small amount of tissue remains in the surgical target area, and the delayed high-pressure water flow can be used to complete the removal of the remaining tissue. However, this requires a very high level of judgment in determining the timing of water flow shutdown and demands a high level of skill from the surgeon, making it difficult to implement. Summary of the Invention

[0004] The aim is to at least solve one of the technical problems existing in the prior art. This invention provides a medical surgical water jet system that facilitates operation positioning. Simultaneously, by controlling the jet tube to position the jet outlet within the receiving cavity, it can quickly limit the high-pressure jet from exiting the nozzle, preventing the high-pressure water flow from accidentally removing normal tissue, improving operational safety, and reducing the difficulty of water jet operation.

[0005] To achieve the above objectives, the present invention provides a medical surgical water jet system, including a handle and a blade head. The blade head includes a protective cover and a jet tube for communicating with a water source in the handle. The jet tube is connected to the handle. The protective cover includes a positioning block and a protective cover rod. The positioning block is connected to the front end of the protective cover rod, and the rear end of the protective cover rod is connected to the handle. The positioning block has a receiving cavity and a spray port communicating with the receiving cavity. The protective cover rod has a rod channel communicating with the receiving cavity along its axial direction. The jet tube is disposed in the rod channel and extends along the axial direction of the rod channel. The front end of the jet tube has a jet port that extends into the receiving cavity, and the jet port communicates with the spray port, or the inner wall of the receiving cavity blocks the jet port.

[0006] As a preferred embodiment, it also includes a suction tube for connection to a negative pressure system, the suction tube being isolated from the jet tube, the suction tube being axially connected to the rod channel, the positioning block having a positioning suction port communicating with the receiving cavity, one end of the suction tube being connected to the knife handle, and the other end of the suction tube extending into the receiving cavity and communicating with the positioning suction port.

[0007] As a preferred embodiment, the injection port includes a first injection port and a second injection port. The jet pipe is axially connected inside the protective rod. The protective rod rotates relative to the jet pipe. The first injection port and the second injection port are arranged circumferentially around the protective rod. The first injection port and the second injection port are respectively positioned corresponding to the jet port in the axial direction of the jet pipe. The positions of the first injection port and the second injection port are respectively positioned corresponding to the position of the jet port. One of the first injection port and the second injection port communicates with the jet port.

[0008] As a preferred embodiment, the positioning block includes a positioning side plate and a first spray plate and a second spray plate arranged opposite to each other. The positioning side plate is located between the first spray plate and the second spray plate. The first spray plate, the second spray plate and the positioning side plate enclose the receiving cavity. The first spray port is disposed on the first spray plate and the second spray port is disposed on the second spray plate. The positioning back suction port is opened on the positioning side plate.

[0009] As a preferred embodiment, the positioning side plate is provided with positioning back suction ports at both ends along the axial direction of the protective rod, and the plurality of positioning back suction ports are respectively connected to the back suction pipe through the receiving cavity.

[0010] As a preferred embodiment, the outer periphery of the jet tube is connected to a positioning part, and the receiving cavity is provided with a positioning surface corresponding to the shape and position of the positioning part. A limiting cavity is formed by defining multiple positioning surfaces, and the positioning part is limited and installed in the limiting cavity. When the protective cover rotates, the positioning part rotates relative to the limiting cavity.

[0011] As a preferred embodiment, the suction tube is sleeved on the outer periphery of the jet tube, one end of the jet tube and one end of the suction tube are respectively connected to the positioning part, and the peripheral side of the suction tube is provided with a suction port located in the receiving cavity, and the suction port is connected to the positioning suction port through the receiving cavity.

[0012] As a preferred embodiment, the maximum thickness C of the positioning block is set in the range of 0.5mm-10mm.

[0013] As a preferred embodiment, the device also includes a handheld assembly located between the handle and the positioning block. The handheld assembly is used to clamp and rotate the guard rod so that the guard rod rotates relative to the jet tube.

[0014] As a preferred embodiment, the handheld assembly includes a knob and a clamping sleeve. The knob is provided with a first clamping thread and a clamping channel. An elastic clip is connected to one end of the clamping channel facing the clamping sleeve. The clamping sleeve is provided with a clamping through hole and a second clamping thread. The clamping channel and the clamping through hole are coaxially arranged. The protective rod passes through the clamping channel and the clamping through hole. The clamping through hole is provided with a first port and a second port at its two axial ends, respectively.

[0015] The first port is located away from the knob, and the diameter of the first port is smaller than the diameter of the second port. The knob and the clamping sleeve are connected to the second clamping thread through the first clamping thread.

[0016] When the elastic clip is inserted into the through hole of the sleeve and located at the first port, the elastic clip is in contact with and clamped to the outer peripheral surface of the protective rod.

[0017] As a preferred embodiment, the knife handle includes a knife handle body and a knife head replacement assembly. The knife handle body has a knife handle cavity. The knife head replacement assembly includes a knife head connector for connecting to the jet pipe and a knife handle connector for connecting to a water source. The knife handle connector is connected to the knife handle cavity. The knife handle connector and the knife head connector are detachably coaxially snapped together. An elastic locking pin and an operating locking handle are connected to the outer periphery of the knife handle connector. The upper end of the elastic locking pin has a locking handle connection port. The elastic locking pin is connected to the knife handle connector.

[0018] The operating handle includes an operating lever, a rotating shaft, and an eccentric shaft. The two ends of the rotating shaft are respectively connected to the operating lever. The operating lever is located outside the handle body. The rotating shaft is rotatably connected to the handle body. The eccentric shaft is eccentrically connected to the rotating shaft and rotatably connected to the handle connection port.

[0019] As a preferred embodiment, the inner wall of the receiving cavity partially blocks the jet port, and part of the jet port is connected to the injection port.

[0020] Compared with existing technologies, the medical surgical water jet system of this invention has the following advantages: It includes a protective cover, which comprises a cover rod and a positioning block. The positioning block is connected to the end of the cover rod away from the handle. By abutting against the position to be operated on, the positioning block provides initial positioning of the operation location, improving the accuracy of the operation. One end of the jet tube is connected to a high-pressure water flow, and the other end extends into the receiving cavity of the positioning block and is connected to the spray nozzle. One end of the jet tube is positioned within the receiving cavity, ensuring the positional stability of the jet tube's jet nozzle. The jet nozzle of the jet tube is connected to the spray nozzle, allowing the high-pressure water flow inside the jet tube to be ejected through the spray nozzle, thereby achieving the removal of tissue in the target surgical area. When it is necessary to stop the high-pressure water jet, the jet tube and the protective rod can move relative to each other along the axial direction, retracting the jet nozzle into the receiving cavity. The inner wall of the receiving cavity blocks the high-pressure water jet ejected from the jet nozzle, allowing the high-pressure water jet to stop spraying outward immediately. This avoids the lag caused by the long flow path of the high-pressure water jet, which could lead to the high-pressure water jet accidentally cutting normal tissue in areas other than the surgical target area. This improves operational safety and reduces the difficulty of operating the water jet. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention.

[0022] Figure 2 This is a cross-sectional schematic diagram of the overall structure of an embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram showing the disassembled structure of the protective cover, jet pipe, and back suction pipe according to an embodiment of the present invention.

[0024] Figure 4 This is a schematic diagram of the structure of the protective cover according to an embodiment of the present invention.

[0025] Figure 5 This is an embodiment of the present invention. Figure 2 A schematic diagram of the structure at point C-C.

[0026] Figure 6 This is a schematic cross-sectional view of the assembly structure of the protective cover, jet pipe and back suction pipe in an embodiment of the present invention.

[0027] Figure 7 This is a cross-sectional schematic diagram of the protective cover according to an embodiment of the present invention.

[0028] Figure 8 This is a schematic diagram of the assembly structure of the jet tube, the suction tube, and the cutter head adapter in an embodiment of the present invention.

[0029] Figure 9 This is an embodiment of the present invention. Figure 8 A magnified structural diagram of point D in the diagram.

[0030] Figure 10This is a schematic diagram of the component breakdown structure of the handheld component according to an embodiment of the present invention.

[0031] Figure 11 This is an embodiment of the present invention. Figure 2 A magnified structural diagram of point A in the diagram.

[0032] Figure 12 This is a schematic cross-sectional view of the assembled knob and cover according to an embodiment of the present invention.

[0033] Figure 13 This is a cross-sectional structural diagram of the clamping sleeve according to an embodiment of the present invention.

[0034] Figure 14 This is an embodiment of the present invention. Figure 2 A magnified structural diagram of point B in the diagram.

[0035] Figure 15 This is a schematic diagram of the blade replacement assembly according to an embodiment of the present invention.

[0036] Figure 16 This is a schematic diagram of the blade connector according to an embodiment of the present invention.

[0037] Figure 17 This is a schematic diagram of the tool holder connector according to an embodiment of the present invention.

[0038] Figure 18 This is a schematic diagram of the operation handle in an embodiment of the present invention.

[0039] Figure 19 This is a schematic diagram of the protective cover in use according to an embodiment of the present invention.

[0040] In the picture:

[0041] 10. Protective cover; 11. Positioning block; 12. Receiving cavity; 13. Arc-shaped positioning surface; 14. Spray nozzle; 15. First spray nozzle; 16. Second spray nozzle; 17. Positioning back suction port; 18. Positioning side plate; 19. First spray plate; 20. Second spray plate; 21. Protective cover rod; 22. Rod channel;

[0042] 30. Jet tube; 31. Jet nozzle; 32. Positioning part; 33. Nozzle cover;

[0043] 40. Back suction tube; 41. Suction tube opening;

[0044] 50. Handheld assembly; 51. Knob; 52. Clamping channel; 53. Elastic clamping piece; 54. Elastic sub-clamping piece; 55. Elastic clamping end; 56. First clamping thread; 57. Clamping sleeve; 58. Clamping sleeve through hole; 581. First port; 582. Second port; 59. Second clamping thread;

[0045] 60. Handle; 61. Handle body; 62. Handle cavity; 63. Handle suction tube;

[0046] 70. Tool head adapter; 71. First interface; 72. Second interface; 73. Third interface; 74. Second channel; 75. First channel;

[0047] 80. Blade head replacement assembly; 81. Blade holder connector; 82. Insertion channel; 83. Pipeline socket; 84. Locking block; 85. Locking groove; 86. Elastic locking pin; 87. Lock handle connection port; 88. Operating lock handle; 89. Operating lever; 90. Rotary shaft; 91. Eccentric shaft; 92. Blade head connector; 93. Locking block; 94. Locking through groove; 95. Locking interface; 96. Fiber optic cable for receiving images; 97. Tissue to be excised; 98. Water jet;

[0048] 100. Vertebrae; 101. Cartilaginous endplate; 102. Annulus fibrosus; 103. Surgical chamber. Detailed Implementation

[0049] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0050] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" used to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0051] In the description of this invention, it should be understood that the terms "connected," "linked," and "fixed," etc., used in this invention 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 a welded 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, unless otherwise explicitly defined. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0052] like Figures 1 to 19As shown, a preferred embodiment of the present invention provides a medical surgical water jet system, including a handle 60 and a blade head. The blade head includes a protective cover 10 and a jet tube 30 for communicating with a water source in the handle 60. The jet tube 30 is connected to the handle 60. The protective cover 10 includes a positioning block 11 and a protective cover rod 21. The positioning block 11 is connected to the front end of the protective cover rod 21, and the rear end of the protective cover rod 21 is connected to the handle 60. The positioning block 11 has a receiving cavity 12 and a spray port 14 communicating with the receiving cavity 12. The protective cover rod 21 has a rod channel 22 communicating with the receiving cavity 12 along its axial direction. The jet tube 30 is disposed in the rod channel 22 and extends along the axial direction of the rod channel 22. The front end of the jet tube 30 has a jet port 31. The front end of the jet tube 30 extends into the receiving cavity 12, and the jet port 31 communicates with the spray port 14, or the inner wall of the receiving cavity 12 blocks the jet port 31.

[0053] The medical surgical water jet system of the present invention includes a handle 60 and a blade head. The blade head includes a protective cover 10 and a jet tube 30, which is connected to the handle 60. The protective cover 10 includes a protective cover rod 21 and a positioning block 11. The positioning block 11 is connected to the end of the protective cover rod 21 away from the handle 60. The positioning block 11 abuts against the position to be operated on to initially position the operation position and improve the accuracy of the operation position. One end of the jet tube 30 is connected to the high-pressure water flow inside the handle 60, and the other end extends into the receiving cavity 12 of the positioning block 11 and is connected to the spray port 14. One end of the jet tube 30 is positioned in the receiving cavity 12 to ensure the positional stability of the jet port 31 of the jet tube 30. The jet port 31 of the jet tube 30 is connected to the spray port 14, so that the high-pressure water flow inside the jet tube 30 is ejected through the spray port 14 to achieve the removal of tissue in the target surgical area. When it is necessary to stop the high-pressure water jet from the jet tube 30, the jet tube 30 and the protective rod 21 can move relative to each other along the axial direction, retracting the jet nozzle 31 into the receiving cavity 12. The inner wall of the receiving cavity 12 blocks the high-pressure water jet from the jet tube 30, allowing the high-pressure water jet to stop spraying outwards immediately. This avoids the lag caused by the long flow path of the high-pressure water jet, which could lead to the accidental removal of normal tissue by the high-pressure water jet, thus improving operational safety and reducing the difficulty of water jet operation. At the same time, during the relative movement of the protective rod 10 and the jet tube 30, the overlap area between the spray nozzle 14 and the jet nozzle 31 can be adjusted, which can meet more resection operation needs and improve the flexibility of operation.

[0054] Furthermore, the inner wall of the receiving cavity 12 partially blocks the jet port 31, and part of the jet port 31 is connected to the spray port 14. Since the jet pipe 30 can slide or rotate relative to the receiving cavity 21, the inner wall of the receiving cavity 12 blocks part of the jet port 31, reducing the spray range of the jet port 31. Therefore, the size of the overlap between the jet port 31 and the spray port 11 can be adjusted to control the spray range of the high-pressure water flow.

[0055] In one embodiment, the guard rod 21 is detachably connected to the tool holder 60. The guard rod 21 is inserted into the tool holder 60 and can rotate and move relative to the tool holder 60.

[0056] Furthermore, such as Figures 3 to 9 As shown, the procedure also includes a suction tube 40 for connection to a negative pressure system. The suction tube 40 is isolated from the jet tube 30. The suction tube 40 is axially connected within the rod channel 22. The positioning block 11 has a positioning suction port 17 communicating with the receiving cavity 12. One end of the suction tube 40 is connected to the knife handle 60, and the other end extends into the receiving cavity 12 and communicates with the positioning suction port 17. The jet tube 30 and the suction tube 40 are isolated from each other, ensuring that the high-pressure jet in the jet tube 30 is isolated from the suction fluid in the suction tube 40, thus preventing their operation from affecting each other. The suction tube 40 is connected to the negative pressure system and communicates with the positioning suction port 17 through the receiving cavity 12 in the positioning block 11. During the surgical procedure, any accumulated fluid or separated tissue enters the suction tube 40 through the positioning suction port 17 to achieve immediate removal of accumulated fluid and separated tissue, avoiding interference with the surgical field of view and repeated manual removal, thereby improving surgical efficiency.

[0057] Furthermore, such as Figures 4 to 7 As shown, the jet nozzle 14 includes a first jet nozzle 15 and a second jet nozzle 16. The jet tube 30 is axially connected to the protective rod 21. The protective rod 21 and the jet tube 30 rotate relative to each other. The first jet nozzle 15 and the second jet nozzle 16 are arranged circumferentially around the protective rod 21. The positions of the first jet nozzle 15 and the second jet nozzle 16 correspond to the axial positions of the jet nozzle 31 in the jet tube 30. One of the first jet nozzle 15 and the second jet nozzle 16 is connected to the jet nozzle 31. Specifically, rotating the protective rod 21 causes the jet tube 30 and the protective rod 21 to rotate relative to each other, causing the jet nozzle 14 to rotate relative to each other within the receiving cavity 12. This allows for switching between the connection between the jet nozzle 31 and the first jet nozzle 15, or between the jet nozzle 31 and the second jet nozzle 16, thus enabling switching of the high-pressure water jet position, i.e., changing the surgical cutting position, and improving operational flexibility.

[0058] As one embodiment, such as Figures 4 to 7 As shown, the first jet nozzle 15 and the second jet nozzle 16 are arranged opposite to each other on the positioning block 11, so that the high-pressure water flow can cut the tissue on opposite sides of the positioning block 11, thereby improving the flexibility of operation.

[0059] As one embodiment, such as Figures 3 to 9 As shown, the jet tube 30 is connected inside the suction tube 40 and is isolated from it. Since the suction tube 40 is a rigid pipe, it provides support for the jet tube 30, thereby improving the support stability and operational stability of the cutter head.

[0060] As one embodiment, such as Figures 3 to 9 As shown, the suction pipe 40 is sleeved on the outer periphery of the jet pipe 30. The outer peripheral wall of the suction pipe 40 is in contact with the inner wall of the rod channel 22. The suction pipe 40 and the protective rod 21 can rotate relative to each other, which improves the relative rotational stability of the protective rod 21 and the suction pipe 40.

[0061] As one embodiment, such as Figure 9 As shown, the jet port 31 is connected to a nozzle cover 33. One end of the nozzle cover 33 is connected to the jet pipe 30, and the other end of the nozzle cover 33 extends to the jet port 14 to ensure the concentration of the water jet and avoid the back suction force of the back suction pipe 40 from affecting the concentration of the water jet.

[0062] Furthermore, such as Figures 3 to 7 As shown, the positioning block 11 includes a positioning side plate 18 and a first spray plate 19 and a second spray plate 20 arranged opposite each other. The positioning side plate 18 is located between the first spray plate 19 and the second spray plate 20. The first spray plate 19, the second spray plate 20, and the positioning side plate 18 enclose a receiving cavity 12. A first spray port 15 is disposed on the first spray plate 19, a second spray port 16 is disposed on the second spray plate 20, and a positioning back suction port 17 is opened on the positioning side plate 18. The positioning back suction port 17 is arranged in a different direction from the first spray port 15 and the second spray port 16, reducing the influence of the back suction force on the spray direction of the high-pressure water flow and ensuring operational accuracy. The first spray plate 19 and the second spray plate 20 position the positioning block 11 within the surgical chamber 103, preventing the positioning block 11 from changing direction under the impact force of the jet flow from the jet tube 30, improving operational safety and maintaining the stability of the operating angle.

[0063] In one embodiment, the first spray plate 19 and the second spray plate 20 of the positioning block 11 are positioned close to the surgical joint surface to determine the tissue that needs to be sprayed and removed within the area of ​​the spray port 14.

[0064] As one embodiment, such as Figures 3 to 7 As shown, the positioning side plate 18 is perpendicular to the first spray plate 19 and the second spray plate 20 respectively. The first spray plate 19 and the second spray plate 20 are arranged in parallel. The overall shape is relatively regular, which facilitates operation and positioning.

[0065] As one embodiment, such as Figures 3 to 7 As shown, the first spray plate 19 and the second spray plate 20 are straight plates. The side of the positioning side plate 18 away from the guard rod 21 is curved.

[0066] Furthermore, such as Figures 3 to 7As shown, the positioning side plate 18 has positioning suction ports 17 at both ends along the axial direction of the protective rod 21, and the multiple positioning suction ports 17 are connected to the suction tube 40 through the receiving cavity 12. The positioning suction ports 17 on both sides of the positioning side plate 18 along the axial direction of the protective rod 21 improve the suction efficiency of accumulated fluid and separated tissues and avoid affecting the surgical field of vision.

[0067] Furthermore, such as Figures 5 to 6 as well as Figures 8 to 9 As shown, a positioning part 32 is connected to the outer periphery of the jet tube 30. The receiving cavity 12 has positioning surfaces corresponding to the shape and position of the positioning part 32. Multiple positioning surfaces define a limiting cavity, within which the positioning part 32 is installed. When the protective cover 10 rotates, the positioning part 32 rotates relative to it within the limiting cavity. By limiting the positioning part 32 with the positioning surfaces, significant swaying of the jet tube 30 during use is prevented, improving the reliability of the jet tube 30's spray position.

[0068] Of course, the shapes of the positioning part 32 and the positioning surface are not limited, as long as the positioning part 32 and the positioning surface can rotate relative to each other. There can be a certain gap between the positioning part 32 and the positioning surface to allow relative rotation. In one embodiment, the positioning part 32 is spherical and the positioning surface is arc-shaped. When the limiting cavity formed by the arc-shaped surface and the spherical positioning part 32 rotate and mate, the rotation is smoother, which helps improve the operating feel and makes the operation of the jet tube 30 smoother.

[0069] In one embodiment, the protective cover 10 is a reusable product, while the jet tube 30 and the positioning part 32 are disposable products.

[0070] In one embodiment, the positioning part 32 has a through hole whose shape corresponds to that of the jet tube 30. After the jet tube 30 is inserted into the through hole, the positioning part 32 is welded to the jet tube 30 to fix it. The positioning part 32 is also welded to the suction pipe 40 to fix the jet tube 30.

[0071] Furthermore, such as Figures 8 to 9As shown, the suction pipe 40 is sleeved around the outer periphery of the jet pipe 30. One end of the jet pipe 30 and one end of the suction pipe 40 are respectively connected to the positioning part 32. The peripheral side of the suction pipe 40 is provided with a suction port 41 located in the receiving cavity 12. The suction port 41 is connected to the positioning suction port 17 through the receiving cavity 12. The positioning part 32 positions the working ends of the jet pipe 30 and the suction pipe 40, improving the operational stability and accuracy of the jet pipe 30 and the suction pipe 40, and also improving the overall stability of the water jet structure. Accumulated liquid and separated tissue enter the receiving cavity 12 through the positioning suction port 17, and the suction port 41 draws the accumulated liquid and separated tissue into the suction pipe 40 for discharge. At the same time, when the jet pipe 30 retracts into the receiving cavity 12, and the high-pressure water flow forms an overflow in the receiving cavity 12, the suction port 41 draws the overflow into the suction pipe 40 for discharge.

[0072] As one embodiment, such as Figures 8 to 9 As shown, the jet pipe 30 is installed axially inside the suction pipe 40. The ends of the jet pipe 30 and the suction pipe 40 on the same side are respectively connected to the positioning part 32 to form a water jet structure. The working ends of the jet pipe 30 and the suction pipe 40 are positioned by the positioning part 32, which improves the operational stability and accuracy of the jet pipe 30 and the suction pipe 40, and at the same time improves the overall stability of the water jet structure.

[0073] In one embodiment, the jet water flow 98 is blocked by the positioning block 11, causing the overflow to flow back into the receiving cavity 12. The overflow can be sucked into the suction pipe 40 through the suction port 41 in the receiving cavity 12 and discharged.

[0074] Furthermore, such as Figure 6 As shown, the maximum thickness C of the positioning block 11 is set in the range of 0.5mm-10mm to meet the space requirements of the surgical chamber 103. Preferably, the maximum thickness C of the positioning block 11 is set in the range of 2mm-7.2mm. As one embodiment, the surgical chamber 103 is located within the vertebra 100 and is formed by the cartilaginous endplate 101 and the annulus fibrosus 102.

[0075] Furthermore, such as Figures 10 to 13 As shown, it also includes a handheld assembly 50, which is located between the handle 60 and the positioning block 11. The handheld assembly 50 is used to clamp the protective rod 21 and rotate the protective rod 21 so that the protective rod 21 rotates relative to the jet tube 30. The handheld assembly 50 is fixed to the protective rod 21. The protective rod 21 can be rotated or moved axially by the handheld assembly 50, which makes it easier to adjust the angle and move the protective rod 21 and improves the ease of operation. As one embodiment, the rear end of the protective rod 21 is indirectly connected to the handle 60 through the handheld assembly 50.

[0076] Furthermore, such as Figures 10 to 13As shown, the handheld assembly 50 includes a knob 51 and a clamping sleeve 57. The knob 51 has a clamping channel 52, and an elastic clip 53 is connected to one end of the clamping channel 52 facing the clamping sleeve 57. The clamping sleeve 57 has a clamping through hole 58. The clamping channel 52 and the clamping through hole 58 are coaxially arranged. The guard rod 21 passes through the clamping channel 52 and the clamping through hole 58. The clamping through hole 58 has a first port 581 and a second port 582 at its two axial ends, respectively. The first port 581 is located away from the knob 51, and the diameter of the first port 581 is smaller than the diameter of the second port 582. The knob 51 and the clamping sleeve 57 are connected. When the elastic clip 53 is inserted into the clamping through hole 58 and located at the first port 581, the elastic clip 53 is in contact with and clamps the outer peripheral surface of the guard rod 21. The guard rod 21 is inserted into the clamping channel 52 of the knob 51 and extends to the outlet of the elastic clip 53. The elastic clip 53 is inserted into the through hole of the chuck. When one end of the elastic clip 53 is inserted into the first port 581, the knob 51 is connected and fixed to the clamping sleeve 57. Since the diameter of the first port 581 is small, the elastic clip 53 is clamped to the guard rod 21, thereby fixing the handheld component 50 to the guard rod 21.

[0077] As one embodiment, such as Figures 10 to 13As shown, the knob 51 is provided with a clamping channel 52 arranged along the axial direction and a first clamping thread 56. The first clamping thread 56 is arranged around the outer periphery of the clamping channel 52. An elastic clamping piece 53 is connected to one end of the clamping channel 52 facing the clamping sleeve 57. The suction tube 40 is sleeved on the outer periphery of the jet tube 30. The protective rod 21 is sleeved on the suction tube 40. The protective rod 21 passes through the clamping channel 52. The suction tube 40 and the jet tube 30 are connected to the handle 60 to achieve fixation. The clamping sleeve 57 has a clamping through hole 58 and a second clamping thread 59 coaxially arranged with the clamping channel 52. The second clamping thread 59 is located at the end of the clamping sleeve 57 facing the knob 51 and surrounds the clamping through hole 58. The clamping through hole 58 has a first port 581 and a second port 582 at its two axial ends, respectively. The first port 581 is away from the knob 51, and the second port 582 faces the knob 51. The diameter of the first port 581 is smaller than the diameter of the second port 582. The knob 51 and the clamping sleeve 57 are threadedly connected to the second clamping thread 59 through the first clamping thread 56. When the elastic clip 53 is located at the first port 581, the elastic clip 53 is in contact with the outer periphery of the guard rod 21, and the elastic clip 53 clamps the guard rod 21 in the clamping through hole 58. The handle 60 facilitates hand-holding of the medical surgical water knife, and the hand-holding assembly 50 is used to adjust the axial position between the guard rod 21 and the suction tube 40. The protective rod 21 passes through the clamping channel 52. The elastic clamping piece 53 is inserted into the clamping through hole with one end facing the clamping sleeve 57. Rotating the knob 51 connects the first clamping thread 56 and the second clamping thread 59. Since the diameter of the first port 581 is smaller than the diameter of the second port 582, when the end of the elastic clamping piece 53 moves to the first port 581, the elastic clamping piece 53 comes into contact with the outer periphery of the protective rod 21 in the through hole 58 of the sleeve, clamping the protective rod 21. This fixes the handheld assembly 50 to the protective rod 21, allowing the protective rod 21 to be rotated or moved axially via the handheld assembly 50, facilitating angle and movement operations and improving ease of operation. The jet pipe 30 is located inside the return suction pipe 40. The return suction pipe 40 is a rigid pipe with support, preventing the clamping of the protective rod 21 from affecting the smooth flow of the jetting water flow 98 from the jet pipe 30.

[0078] As one embodiment, such as Figures 10 to 13As shown, the elastic clip 53 includes a plurality of circumferentially spaced elastic sub-clamps 54. One end of each elastic sub-clamp 54 is connected to the knob 51 and arranged around the clamping channel 52. The other end of each elastic sub-clamp 54 defines an elastic clamping end 55. The outer diameter of the elastic clamping end 55 is a mm, and the diameter of the first port 581 is b mm, where b < a. There is a gap between adjacent elastic sub-clamps 54. Since the diameter of the first port 581 is small, when an elastic sub-clamp 54 is inserted into the first port 581, the adjacent elastic sub-clamps 54 are compressed, and the elastic clamping end 55 contracts radially to clamp the guard rod 21 and the suction pipe 40.

[0079] As one embodiment, such as Figures 10 to 13 As shown, the elastic clip 54 is made of an elastic material, and the elastic clip 54 can be made of plastic or metal.

[0080] Furthermore, such as Figures 14 to 18 As shown, the tool holder 60 includes a tool holder body 61 and a tool head replacement assembly 80. The tool holder body 61 has a tool holder cavity 62. The tool head replacement assembly 80 includes a tool head connector 92 for connecting to the jet tube 30 and a tool holder connector 81 for connecting to a water source. The tool holder connector 81 is connected to the tool holder cavity 62. The tool holder connector 81 and the tool head connector 92 are detachably coaxially snapped together. The outer periphery of the tool holder connector 81 is connected to an elastic locking pin 86 and an operating locking handle 88. The upper end of the elastic locking pin 86 is provided with a locking handle connection port 87. The elastic locking pin 86 is connected to the tool holder connector 81.

[0081] like Figures 14 to 18As shown, the operating handle 88 includes an operating lever 89, a rotating shaft 90, and an eccentric shaft 91. Both ends of the rotating shaft 90 are connected to the operating lever 89, which is located outside the handle body 61. The rotating shaft 90 is rotatably connected to the handle body 61, and the eccentric shaft 91 is eccentrically connected to the rotating shaft 90. The eccentric shaft 91 is rotatably connected to the handle connection port 87. When the radial distance between the outer circumferential surface of the eccentric shaft 91 and the outer circumferential surface of the rotating shaft 90 is at its minimum, the handle connector 81 and the blade head connector 92 are engaged. When the radial distance between the outer circumferential surface of the eccentric shaft 91 and the outer circumferential surface of the rotating shaft 90 is at its maximum, the handle connector 81 and the blade head connector 92 are detachably separated. The handle body 61 is used for gripping. The jet tube 30 is connected to the handle body 61 and cooperates with the handheld assembly 50. The operating guard lever 21 rotates relative to the jet tube 30. The jet tube 30 is detachably connected to the handle body 61 via the blade head replacement assembly 80 to achieve communication with a water source. The cutter head replacement assembly 80 includes a cutter head connector 92 and a cutter handle connector 81. The cutter head connector 92 and the cutter handle connector 81 are detachably connected to facilitate the replacement of the jet tube 30. The cutter handle connector 81 is connected to the cutter handle body 61 for fixation. The elastic locking pin 86 is connected to the cutter handle connector 81 for fixation. The operating handle includes an operating lever 89, a rotating shaft 90, and an eccentric shaft 91. The operating lever 89 is exposed outside the cutter handle body 61 to facilitate the operation of the elastic locking pin 86. The rotating shaft 90 is rotatably connected to the tool holder body 61, so that the tool holder body 61 supports the operating lever 89 through the rotating shaft 90. The operating lever 89 is rotatably connected to the locking handle connection port 87 of the elastic locking pin 86 through the eccentric shaft 91, so as to control the position of the elastic locking pin 86 in the height direction. Specifically, the elastic locking pin 86 is located below the eccentric shaft 91, the outer side of the eccentric shaft 91 is in contact with the upper end face of the locking handle connection port 87, the eccentric shaft 91 is eccentrically connected to the rotating shaft 90, and the outer circumferential surface of the eccentric shaft 91 is in contact with the rotating shaft 90. When the radial distance between the outer circumferential surface of the shaft 90 is at its maximum and it contacts the upper end face of the lock handle connection port 87, the eccentric shaft 91 lifts the elastic locking pin 86, causing the elastic locking pin 86 to move radially away from the cutter head connector 92, and the cutter head connector 81 and the cutter head connector 92 can be detached. When the radial distance between the outer circumferential surface of the eccentric shaft 91 and the outer circumferential surface of the rotating shaft 90 is at its minimum and it is in contact with the upper end face of the lock handle connection port 87, the eccentric shaft 91 does not act on the elastic locking pin 86, and the cutter head connector 81 is engaged with the cutter head connector 92 through the elastic locking pin 86.

[0082] As one embodiment, such as Figure 2 , Figures 14 to 18As shown, the tool holder 60 includes a tool holder body 61, a tool holder suction tube 63, a tool tip adapter 70, and a tool tip replacement assembly 80. The tool holder body 61 has a tool holder cavity 62. The tool tip adapter 70 and the tool tip replacement assembly 80 are connected to the tool holder cavity 62. The tool tip replacement assembly 80 includes a detachably connected tool holder connector 81 and a tool tip connector 92. The tool tip adapter 70 has a first interface 71, a second interface 72, and a third interface 73. The first interface 71 and the second interface 72 communicate to form a first channel 75. One end of the guard rod 21 is connected to the first interface 71. The jet tube 30 is inserted into the tool tip connector 92 through the first channel 75. The third interface 73 communicates with the first interface 71 to form a second channel 74. The suction tube 40 is connected to the first interface 71 and communicates with the second channel 74. The third interface 73 is detachably connected to the tool holder suction tube 63. The first channel 75 and the second channel 74 are not interconnected. The jet tube 30 is connected and fixed to the cutter head connector 92 through the first channel 75. The cutter head connector 92 is detachably connected and communicates with the cutter handle connector 81. The cutter handle connector 81 is used to connect to a high-pressure water source, thereby realizing the connection between the jet tube 30 and the high-pressure water source, and realizing the detachable connection with the cutter handle connector 81. The cutter handle return suction tube 63 is used to communicate with the negative pressure system. The return suction tube 40 is fixed by connecting to the first interface 71. The accumulated liquid and separated tissue in the return suction tube 40 enter the cutter handle return suction tube 63 through the second channel 74 and are discharged. The third interface 73 is detachably connected to the cutter handle return suction tube 63, thereby realizing the detachable connection between the return suction tube 40 and the jet tube 30 and the cutter handle 60, which facilitates the replacement of the cutter head.

[0083] As one embodiment, such as Figures 14 to 18 As shown, the tool holder connector 81 and the tool head connector 92 are coaxially installed. The tool holder connector 81 is provided with a plug-in channel 82. The plug-in channel 82 is provided with a pipe socket 83 and a locking groove 85 connected sequentially along the axial direction. The tool holder connector 81 is provided with a snap-fit ​​interface 95 whose position corresponds to the elastic locking pin 86. The snap-fit ​​interface 95 is connected to the locking groove 85.

[0084] like Figures 14 to 18As shown, a locking block 93 protrudes from the outer periphery of the cutter head connector 92, and a locking groove 94 is provided on the outer periphery of the locking block 93. When the cutter head connector 92 is connected to the cutter handle connector 81, the cutter head connector 92 is inserted into the insertion channel 82, and the locking block 93 extends into the locking groove 85 through the pipe insertion port 83 and rotates to the locking interface 95, so that at least part of the elastic locking pin 86 extends into the locking interface 95 and is connected to the locking groove 94. At this time, the elastic locking pin 86 is in a natural state without elastic deformation, and the locking block 93 is located in the locking groove 85 and is locked with the cutter handle connector 81. When the cutter head connector 92 separates from the cutter handle connector 81, rotating the operating lever 89 causes the eccentric shaft 91 to lift the elastic locking pin 86 through the locking handle connection port 87. Under its elastic action, the elastic locking pin 86 is lifted from the locking slot 94, thereby rotating the cutter head connector 92. The cutter head connector 92 rotates along the locking slot 85, causing the locking block 93 to rotate to the pipe insertion port 83, thus allowing the cutter head connector 92 and the cutter handle connector 81 to be pulled out of the pipe insertion port 83. The edge shape formed by the locking block 93 and the cutter head connector 92 corresponds to the shape of the pipe insertion port 83, allowing the locking block 93 and the cutter head connector 92 to be inserted into or pulled out of the locking slot 85 from the pipe insertion port 83.

[0085] As one embodiment, such as Figure 19 As shown, the protective rod 21 is inserted into the optical fiber for receiving images, and the positioning block 11 is inserted into the tissue to be removed. In the figure, the vertebra 100 is used as the treatment target.

[0086] The process of using the medical surgical water jet system of the present invention: as follows Figure 19 As shown, select a suitable type of protective cover 10, remove the endoscope and insert it into the protective cover 10. Insert the protective cover 10 into the intervertebral disc through the working channel of the endoscope. Place the surface of the protective cover rod 21 tightly against one side of the cartilaginous endplate 101. Position the positioning block 11 against the area requiring surgical resection. Insert the prepared water jet nozzle (consisting of a jet tube 30 and a suction tube 40) into the protective cover rod 21 until it contacts the arc-shaped positioning surface 13 inside the positioning block 11. Start at a low setting, observe the jet direction of the water jet nozzle, and adjust to a suitable setting as needed to resect the cartilaginous endplate 101. After the removal of one side, the shield 10 is fixed relative to the surgical site. The handle 60 is rotated to drive the jet tube 30 to rotate relative to the shield 10 to remove the cartilaginous endplate 101 on the other side. After the cartilaginous endplate 101 is removed, the shield 10 and the jet tube 30 are moved axially. The jet nozzle 14 is moved into the receiving cavity 12. The inner wall of the positioning block 11 blocks the high-speed water flow from the jet nozzle 14. The high-speed water flow in the receiving cavity 12 forms an overflow and is back-suctioned through the suction tube 40. During the operation, waste fluid and excised tissue are back-suctioned through the suction tube 40.

[0087] In summary, this invention provides a medical surgical water jet system, including a handle 60 and a blade head. The blade head includes a protective cover 10 and a jet tube 30, which is connected to the handle 60. The protective cover 10 includes a protective cover rod 21 and a positioning block 11. The positioning block 11 is connected to the end of the protective cover rod 21 away from the handle 60. The positioning block 11 abuts against the position to be operated on to initially locate the operation position and improve the accuracy of the operation position. One end of the jet tube 30 is connected to the high-pressure water flow inside the handle 60, and the other end extends into the receiving cavity 12 of the positioning block 11 and is connected to the spray port 14. One end of the jet tube 30 is positioned within the receiving cavity 12 to ensure the positional stability of the jet port 31 of the jet tube 30. The jet port 31 of the jet tube 30 is connected to the spray port 14, allowing the high-pressure water flow inside the jet tube 30 to be ejected through the spray port 14 to achieve the removal of tissue in the target surgical area. When it is necessary to stop the high-pressure water jet from the jet tube 30, the jet tube 30 and the protective rod 21 can move relative to each other along the axial direction, retracting the jet nozzle 31 into the receiving cavity 12. The inner wall of the receiving cavity 12 blocks the high-pressure water jet from the jet tube 30, allowing the high-pressure water jet to stop spraying outwards immediately. This avoids the lag caused by the long flow path of the high-pressure water jet, which could lead to the accidental removal of normal tissue by the high-pressure water jet, thus improving operational safety and reducing the difficulty of water jet operation. At the same time, during the relative movement of the protective rod 10 and the jet tube 30, the overlap area between the spray nozzle 14 and the jet nozzle 31 can be adjusted, which can meet more resection operation needs and improve the flexibility of operation.

[0088] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make several improvements and substitutions without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A medical surgical water jet system, characterized in that: The device includes a handle and a blade. The blade includes a protective cover and a jet tube for communicating with a water source. The jet tube is connected to the handle. The protective cover includes a positioning block and a protective cover rod. The positioning block is connected to the front end of the protective cover rod, and the rear end of the protective cover rod is connected to the handle. The positioning block has a receiving cavity and a spray port communicating with the receiving cavity. The protective cover rod has a rod channel communicating with the receiving cavity along its axial direction. The jet tube is movably disposed in the rod channel and extends along the axial direction of the rod channel. The front end of the jet tube has a jet port that extends into the receiving cavity and communicates with the spray port, or the inner wall of the receiving cavity blocks the jet port.

2. The medical surgical water jet system according to claim 1, characterized in that: It also includes a back suction tube for connection to a negative pressure system, the back suction tube being isolated from the jet tube, the back suction tube being axially connected to the rod channel, the positioning block having a positioning back suction port communicating with the receiving cavity, one end of the back suction tube being connected to the knife handle, and the other end of the back suction tube extending into the receiving cavity and communicating with the positioning back suction port.

3. The medical surgical water jet system according to claim 2, characterized in that: The injection port includes a first injection port and a second injection port. The jet tube is axially connected inside the protective rod. The protective rod rotates relative to the jet tube. The first injection port and the second injection port are arranged circumferentially around the protective rod. The first injection port and the second injection port are respectively positioned corresponding to the jet port in the axial direction of the jet tube. The positions of the first injection port and the second injection port are respectively positioned corresponding to the position of the jet port. One of the first injection port and the second injection port communicates with the jet port.

4. The medical surgical water jet system according to claim 3, characterized in that: The positioning block includes a positioning side plate and a first spray plate and a second spray plate arranged opposite to each other. The positioning side plate is located between the first spray plate and the second spray plate. The first spray plate, the second spray plate and the positioning side plate enclose the receiving cavity. The first spray port is disposed on the first spray plate and the second spray port is disposed on the second spray plate. The positioning back suction port is opened on the positioning side plate.

5. The medical surgical water jet system according to claim 4, characterized in that: The positioning side plate is provided with positioning back suction ports at both ends along the axial direction of the protective cover rod, and the plurality of positioning back suction ports are respectively connected to the back suction pipe through the receiving cavity.

6. The medical surgical water jet system according to claim 2, characterized in that: The outer periphery of the jet tube is connected to a positioning part, and the receiving cavity is provided with a positioning surface that corresponds to the shape and position of the positioning part. A limiting cavity is formed by multiple positioning surfaces. The positioning part is installed in the limiting cavity. When the cover rotates, the positioning part rotates relative to the limiting cavity.

7. The medical surgical water jet system according to claim 6, characterized in that: The suction tube is sleeved on the outer periphery of the jet tube. One end of the jet tube and one end of the suction tube are respectively connected to the positioning part. The peripheral side of the suction tube is provided with a suction port located in the receiving cavity. The suction port is connected to the positioning suction port through the receiving cavity.

8. The medical surgical water jet system according to claim 1, characterized in that: The maximum thickness C of the positioning block is set in the range of 0.5mm-10mm.

9. The medical surgical water jet system according to claim 1, characterized in that: It also includes a handheld assembly located between the handle and the positioning block, the handheld assembly being used to clamp and rotate the guard rod so that the guard rod rotates relative to the jet tube.

10. The medical surgical water jet system according to claim 9, characterized in that: The handheld assembly includes a knob and a clamping sleeve. The knob has a first clamping thread and a clamping channel. An elastic clip is connected to one end of the clamping channel facing the clamping sleeve. The clamping sleeve has a clamping through hole and a second clamping thread. The clamping channel and the clamping through hole are coaxially arranged. The protective rod passes through the clamping channel and the clamping through hole. The clamping through hole has a first port and a second port at its two axial ends, respectively. The first port is located away from the knob, and the diameter of the first port is smaller than the diameter of the second port. The knob and the clamping sleeve are connected to the second clamping thread through the first clamping thread. When the elastic clip is inserted into the through hole of the sleeve and located at the first port, the elastic clip is in contact with and clamped to the outer peripheral surface of the protective rod.

11. The medical surgical water jet system according to claim 1, characterized in that: The handle includes a handle body and a blade replacement assembly. The handle body has a handle cavity. The blade replacement assembly includes a blade connector for connecting to the jet pipe and a handle connector for connecting to a water source. The handle connector is connected to the handle cavity. The handle connector and the blade connector are detachably coaxially snapped together. An elastic locking pin and an operating locking handle are connected to the outer periphery of the handle connector. The upper end of the elastic locking pin has a locking handle connection port. The elastic locking pin is connected to the handle connector. The operating handle includes an operating lever, a rotating shaft, and an eccentric shaft. The two ends of the rotating shaft are respectively connected to the operating lever. The operating lever is located outside the handle body. The rotating shaft is rotatably connected to the handle body. The eccentric shaft is eccentrically connected to the rotating shaft and rotatably connected to the handle connection port.

12. The medical surgical water jet system according to claim 1, characterized in that: The inner wall of the receiving cavity partially blocks the jet port, and part of the jet port is connected to the spray port.

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