Medical water jet scalpel shield and water jet scalpel head thereof

Abstract

The utility model relates to the technical field of medical equipment, and discloses a medical water jet scalpel shield and a water jet scalpel head thereof, the medical water jet scalpel shield comprises a positioning block and a shield rod, the positioning block is connected to the front end of the shield rod, the positioning block is provided with a jet orifice and a positioning cavity used for accommodating a jet pipe, the jet orifice is communicated with the positioning cavity, the shield rod is provided with a rod channel along the axial direction, and the rod channel is communicated with the jet pipe. The rod channel is communicated with the positioning cavity. According to the medical water jet scalpel shield and the water jet scalpel head of the medical water jet scalpel shield, positioning of the operation position is facilitated, meanwhile, high-pressure jet flow is prevented from being sprayed out of the jet orifice by controlling the jet pipe to enable the jet orifice to be located in the positioning cavity, normal tissue in a non-surgical target area is prevented from being cut off by high-pressure water flow by mistake, operation safety is improved, and operation difficulty of a water jet scalpel is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of medical equipment, and in particular to a medical water jet cover and its water jet head. Background Technology

[0002] Currently, in modern medical technology, laparoscopic water jets (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. 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 accurately locate the surgical site, making positioning difficult. Furthermore, when controlling the water flow via a device switch, the lag in liquid jetting means that even after the power pump stops pressurizing, a high-speed water jet continues to spray from the nozzle. This high-speed water jet poses a risk of damaging normal tissue in non-surgical target areas. Alternatively, if only a very small amount of tissue remains in the surgical target area, the power pump can be shut off prematurely, utilizing the delayed high-speed water jet to remove the remaining tissue. However, this requires extremely precise timing and skillful operation from the surgeon, making it difficult to implement. Utility Model Content

[0003] The aim is to solve at least one of the technical problems existing in the prior art. This utility model provides a medical water jet cover and its water jet head, which facilitates the positioning of the operation position. At the same time, by controlling the jet tube to keep the jet outlet in the positioning cavity, it can quickly limit the high-pressure jet from being ejected from the jet outlet, avoid the high-pressure water flow from accidentally cutting normal tissue in non-surgical target areas, improve operational safety, and reduce the difficulty of operating the water jet.

[0004] To achieve the above objectives, this utility model provides a medical water jet cover and its water jet head, including a positioning block and a cover rod. The positioning block is connected to the front end of the cover rod. The positioning block is provided with a spray port and a positioning cavity for accommodating the jet tube. The spray port communicates with the positioning cavity. The cover rod is provided with a rod channel along its axial direction. The rod channel communicates with the positioning cavity.

[0005] As a preferred embodiment, the spray port includes a first spray port and a second spray port, the first spray port and the second spray port are arranged circumferentially spaced along the protective rod, and the first spray port and the second spray port are respectively connected to the positioning cavity.

[0006] As a preferred embodiment, the first injection port and the second injection port are arranged opposite to each other on the positioning block.

[0007] 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 port is opened on the first spray plate, and the second spray port is opened on the second spray plate. The first spray plate and the second spray plate are connected through the positioning side plate to form the positioning block. The positioning side plate is provided with a positioning back suction port that communicates with the negative pressure system through the positioning cavity.

[0008] As a preferred embodiment, multiple positioning back suction ports are provided, and the positioning back suction ports are respectively located at both ends of the positioning block in the axial direction of the protective cover rod.

[0009] As a preferred embodiment, the first spray plate and the second spray plate are arranged in parallel, and the positioning side plate is perpendicular to the first spray plate and the second spray plate, respectively.

[0010] As a preferred embodiment, the maximum thickness of the positioning block is C mm, wherein 0.5 mm ≤ C ≤ 10 mm.

[0011] A medical water jet shroud and its water jet head include a jet tube and the medical water jet shroud. The jet tube is slidably connected to the rod channel. One end of the jet tube extends into the positioning cavity and is provided with a jet port. The jet port is connected to the spray port, or the inner wall of the positioning cavity blocks the jet port.

[0012] As a preferred embodiment, the inner wall of the positioning cavity partially blocks the jet port, and part of the jet port is connected to the spray port.

[0013] As a preferred embodiment, the jet tube is provided with a positioning part at one end of the positioning cavity, and the positioning cavity has positioning surfaces whose shapes and positions correspond to the positioning part. Multiple positioning surfaces define a limiting cavity, and the positioning part is rotatably connected to the limiting cavity.

[0014] Compared with existing technologies, the beneficial effects of this utility model's medical water jet cover and water jet head are as follows: The water jet head includes 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 position, improving the accuracy of the operation position. One end of the jet tube is connected to the high-pressure water flow, and the other end extends into the positioning cavity of the positioning block and is connected to the spray port. One end of the jet tube is positioned within the positioning cavity, ensuring the positional stability of the jet port. The connection between the jet tube and the spray port allows the high-pressure water flow inside the jet tube to be ejected through the spray port, thereby achieving the removal of tissue in the target surgical area. When it is necessary to stop the high-pressure water flow, the jet tube and the cover rod can move relative to each other along the axial direction, retracting the high-pressure water flow ejection position of the jet tube back into the positioning cavity. The inner wall of the positioning cavity blocks the high-pressure water flow ejected from the jet tube, enabling immediate cessation of the high-pressure water flow, preventing the high-pressure water flow from accidentally removing normal tissue, improving operational safety, and reducing the difficulty of operating the water jet. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0016] Figure 2 This is a schematic diagram showing the disassembled structure of the protective cover, suction tube, and handle in an embodiment of this utility model.

[0017] Figure 3 This is a schematic diagram of the structure of the water jet guard in an embodiment of this utility model.

[0018] Figure 4 This is a schematic diagram of the internal structure of the water jet guard in an embodiment of this utility model.

[0019] Figure 5 This is a schematic diagram of the assembly structure of the water jet shield, jet pipe and back suction pipe in an embodiment of this utility model.

[0020] Figure 6 This is a schematic diagram of the assembly structure of the water jet shield, jet pipe, positioning part and back suction pipe in an embodiment of this utility model.

[0021] Figure 7 This is an embodiment of the present utility model. Figure 2 A magnified structural diagram of point A in the diagram.

[0022] In the picture:

[0023] 10. Positioning block; 11. Injection nozzle; 12. First injection nozzle; 13. Second injection nozzle; 14. Positioning cavity; 15. Positioning side plate; 16. First injection plate; 17. Second injection plate; 18. Positioning surface; 19. Positioning suction port;

[0024] 20. Protective cover rod; 21. Rod passage;

[0025] 30. Jet tube; 31. Jet nozzle; 32. Positioning part;

[0026] 40. Back suction tube; 41. Suction tube opening;

[0027] 50. Knife handle; 51. Handwheel. Detailed Implementation

[0028] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0029] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" used to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In the description of this utility model, it should be understood that the terms "connected," "linked," and "fixed," etc., used in this utility model 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 utility model according to the specific circumstances.

[0031] like Figures 1 to 7 As shown, a preferred embodiment of the present invention provides a medical water jet cover and its water jet head, including a positioning block 10 and a cover rod 20. The positioning block 10 is connected to the front end of the cover rod 20. The positioning block 10 is provided with a spray port 11 and a positioning cavity 14 for accommodating a jet tube 30. The spray port 11 is connected to the positioning cavity 14. The cover rod 20 is provided with a rod channel 21 along its axial direction. The rod channel 21 is connected to the positioning cavity 14.

[0032] This utility model discloses a medical water jet cover and its water jet head, comprising a cover rod 20 and a positioning block 10. The positioning block 10 is connected to the end of the cover rod 20 away from the handle 50. The positioning block 10 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, and the other end extends into the positioning cavity 14 of the positioning block 10 and is connected to the spray port 11. One end of the jet tube 30 is positioned in the positioning cavity 14 to ensure the positional stability of the jet port 31 of the jet tube 30. The jet tube 30 is connected to the spray port 11 so that the high-pressure water flow in the jet tube 30 is ejected through the spray port 11 to achieve the removal of tissue in the target surgical area. When it is necessary to stop the high-pressure water jet, the jet tube 30 and the protective rod 20 can move relative to each other along the axial direction, retracting the high-pressure water jet position of the jet tube 30 into the positioning cavity 14. The inner wall of the positioning cavity 14 blocks the high-pressure water jet from the jet tube 30, so that the high-pressure water jet can be stopped immediately, avoiding the high-pressure water jet from accidentally cutting off normal tissue, improving operational safety, and reducing the difficulty of water jet operation.

[0033] Furthermore, such as Figures 4 to 6 As shown, the jet nozzle 11 includes a first jet nozzle 12 and a second jet nozzle 13, which are spaced apart circumferentially along the protective rod 20. The first jet nozzle 12 and the second jet nozzle 13 are respectively connected to the positioning cavity 14. In use, one of the first jet nozzle 12 and the second jet nozzle 13 is connected to the jet port 31 of the jet tube 30 to achieve the ejection of high-pressure water, thereby removing the surgical target area. The arrangement of the first jet nozzle 12 and the second jet nozzle 13 is designed to accommodate the removal of surgical target areas in different directions, improving the flexibility of use.

[0034] Furthermore, such as Figures 4 to 6 As shown, the first jet nozzle 12 and the second jet nozzle 13 are arranged opposite to each other on the positioning block 10 to meet the needs of surgical target area excision in different directions and improve the flexibility of use.

[0035] Furthermore, such as Figures 3 to 6As shown, the positioning block 10 includes a positioning side plate 15 and a first spray plate 16 and a second spray plate 17 arranged opposite each other. The positioning side plate 15 is located between the first spray plate 16 and the second spray plate 17. A first spray port 12 is opened on the first spray plate 16, and a second spray port 13 is opened on the second spray plate 17. The first spray plate 16 and the second spray plate 17 are connected by the positioning side plate 15 to form the positioning block 10. The positioning side plate 15 is provided with a positioning back suction port 19 that communicates with the negative pressure system through a positioning cavity 14. The positioning back suction port 19 is arranged in a different direction from the first spray port 12 and the second spray port 13, 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 16 and the second spray plate 17 position the positioning block 10 in the operating chamber, preventing the positioning block 10 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.

[0036] In one embodiment, the first spray plate 16 and the second spray plate 17 of the positioning block 10 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.

[0037] Furthermore, such as Figures 4 to 6 As shown, multiple positioning suction ports 19 are provided, and the positioning suction ports 19 are respectively located at both ends of the positioning block 10 along the axial direction of the protective rod 20. Positioning suction ports 19 are respectively provided on both sides of the positioning side plate 15 along the axial direction of the protective rod 20, which improves the suction efficiency of accumulated fluid and separated tissues and avoids affecting the surgical field of vision.

[0038] Furthermore, such as Figures 4 to 6 As shown, the first spray plate 16 and the second spray plate 17 are arranged in parallel, and the positioning side plate 15 is perpendicular to the first spray plate 16 and the second spray plate 17 respectively, which facilitates the initial positioning of the spray nozzle 11.

[0039] Furthermore, such as Figure 4 As shown, the maximum thickness of the positioning block 10 is C mm, where 0.5 mm ≤ C ≤ 10 mm, to meet the space requirements of the surgical chamber. Preferably, the maximum thickness C of the positioning block 10 is set in the range of 2 mm to 7.2 mm. In one embodiment, the surgical chamber is located within the vertebra and is formed by the cartilaginous endplate and the annulus fibrosus.

[0040] A medical water jet guard and its water jet tip, such as Figures 1 to 2As shown, the device includes a jet tube 30 and a medical water knife cover. The jet tube 30 is slidably connected within the rod channel 21. One end of the jet tube 30 extends into the positioning cavity 14 and has a jet port 31, which communicates with the spray nozzle 11. The jet tube 30 is used to connect to the knife handle 50, and the high-pressure water flow communicates with the jet tube 30 through the knife handle 50. The high-pressure water flow passes sequentially through the knife handle 50 and the jet tube 30 and is then ejected from the jet port 31, or the inner wall of the positioning cavity 14 can be used to block the jet port 31.

[0041] In one embodiment, the guard rod 20 is detachably connected to the tool holder 50. The guard rod 20 is inserted into the tool holder 50 and can rotate and move relative to the tool holder 50.

[0042] As one embodiment, such as Figures 6 to 7 As shown, the jet tube 30 has a working state and a protected state. When the jet tube 30 is in the working state, the jet port 31 is connected to the spray port 11, and the high-pressure water jet in the spray port 11 is ejected to cut the target tissue in the surgical area. When the jet tube 30 is in the protected state, the jet port 31 is positioned facing the inner wall of the positioning cavity 14. The inner wall of the positioning cavity 14 prevents the high-pressure water jet ejected from the jet port 31 from being directly ejected from the spray port 11, avoiding the high-pressure water jet from accidentally cutting normal tissue, improving operational safety, and reducing the difficulty of operating the water jet.

[0043] Furthermore, such as Figures 5 to 6 As shown, the inner wall of the positioning cavity 14 partially blocks the jet port 31, and part of the jet port 31 is connected to the spray port 11. Since the jet pipe 30 and the protective rod 20 can move relative to each other along the axial direction, the inner wall of the positioning cavity 14 partially blocks the jet port 31, thereby reducing the spray range of the jet port 31. Therefore, the size of the overlap range between the jet port 31 and the spray port 11 can be adjusted, thereby adjusting the size of the axial cross-section of the high-pressure water jet ejected from the spray port 11.

[0044] Furthermore, such as Figure 6 As shown, the jet tube 30 has a positioning part 32 at one end of the positioning cavity 14. The positioning cavity 14 has positioning surfaces 18 whose shape and position correspond to the positioning part 32. Multiple positioning surfaces 18 define a limiting cavity, and the positioning part 32 is rotatably connected to the limiting cavity. When the water jet shield rotates, the positioning part 32 rotates relative to it within the limiting cavity. By limiting the positioning part 32 with the positioning surfaces 18, the jet tube 30 is prevented from swinging significantly during use, thus improving the reliability of the jet tube 30's spray position.

[0045] Of course, such as Figure 6As shown, the shapes of the positioning part 32 and the positioning surface 18 are not limited, as long as the positioning part 32 and the positioning surface 18 can rotate relative to each other. Of course, there can be a certain gap between the positioning part 32 and the positioning surface 18 to enable relative rotation. In one embodiment, the positioning part 32 is spherical and the positioning surface 18 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 to improve the operating feel and makes the operation of the jet tube 30 smoother.

[0046] In one embodiment, the protective cover is a reusable product, while the jet tube 30 and the positioning part 32 are disposable products.

[0047] 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.

[0048] As one embodiment, such as Figures 5 to 7 As shown, the water jet cutter head also includes a suction tube 40 connected to the negative pressure system. A protective rod 20 is sleeved around the outer periphery of the suction tube 40, which is also sleeved around the outer periphery of the jet tube 30. The suction tube 40 has a suction port 41, which is connected to a positioning suction port 19 via a positioning cavity 14. During the operation, waste fluid and surgically removed tissue are discharged from the suction tube 40 sequentially through the positioning suction port 19, the positioning cavity 14, and the suction port 41. Specifically, when the jet tube 30 retracts into the positioning cavity 14, forming an overflow, the suction tube 40 suctions back the overflow.

[0049] As one embodiment, such as Figures 5 to 7 As shown, one end of the suction tube 40 and one end of the jet tube 30 are respectively connected to the positioning part 32. The suction port 41 is located on the peripheral side of the suction tube 40.

[0050] As one embodiment, such as Figures 5 to 7 As shown, the suction tube 40 is a rigid tube, the protective rod 20 is a rigid tube, one end of the jet tube 30 and one end of the suction tube 40 are respectively fixed on the handle 50, the suction tube 40 is sleeved on the outer periphery of the jet tube 30, the rigid suction tube 40 provides support for the jet tube 30, and the rigid protective rod 20 and the suction tube 40 are easy to move along the axial direction.

[0051] As one embodiment, such as Figures 1 to 2 As shown, a handwheel 51 is connected to the outer periphery of the guard rod 20. The rotation or axial movement of the guard rod 20 can be controlled by the handwheel 51, which facilitates operation.

[0052] In summary, this utility model embodiment provides a medical water jet guard and its water jet head, including a guard rod 20 and a positioning block 10. The positioning block 10 is connected to the end of the guard rod 20 away from the handle 50. The positioning block 10 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, and the other end extends into the positioning cavity 14 of the positioning block 10 and is connected to the spray port 11. One end of the jet tube 30 is positioned in the positioning cavity 14 to ensure the positional stability of the jet port 31 of the jet tube 30. The jet tube 30 is connected to the spray port 11 so that the high-pressure water flow in the jet tube 30 is ejected through the spray port 11 to achieve the removal of tissue in the target surgical area. When it is necessary to stop the high-pressure water jet, the jet tube 30 and the protective rod 20 can move relative to each other along the axial direction, retracting the high-pressure water jet position of the jet tube 30 into the positioning cavity 14. The inner wall of the positioning cavity 14 blocks the high-pressure water jet from the jet tube 30, so that the high-pressure water jet can be stopped immediately, avoiding the high-pressure water jet from accidentally cutting off normal tissue, improving operational safety, and reducing the difficulty of water jet operation.

[0053] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of this utility model, and these improvements and substitutions should also be considered within the protection scope of this utility model.

Claims

1. A medical water jet shield, characterized in that: The positioning block is connected to the front end of the shield rod, and is provided with a jet port and a positioning cavity for accommodating a jet pipe, the jet port being in communication with the positioning cavity, and the shield rod is provided with a rod channel along its axial direction, the rod channel being in communication with the positioning cavity.

2. The medical water-jet shield according to claim 1, characterized in that: The jet port comprises a first jet port and a second jet port, the first jet port and the second jet port being arranged in a circumferential direction of the shield rod, and the first jet port and the second jet port being in communication with the positioning cavity, respectively.

3. A medical water-jet shield according to claim 2, characterised in that: The first jet port and the second jet port are arranged oppositely on the positioning block.

4. The medical water-jet shield according to claim 2, characterized in that: The positioning block comprises a positioning side plate and oppositely arranged first and second jet plates, the positioning side plate being located between the first and second jet plates, the first jet port being formed in the first jet plate, and the second jet port being formed in the second jet plate, the first and second jet plates being connected to form the positioning block through the positioning side plate, and the positioning side plate being provided with a positioning back suction port in communication with a negative pressure system through the positioning cavity.

5. A medical water-jet shield according to claim 4, characterised in that: The positioning back suction port is provided with a plurality of positioning back suction ports arranged at both ends of the positioning block in the axial direction of the shield rod.

6. The medical water-jet shield according to claim 1, characterized in that: The maximum thickness of the positioning block is C mm, wherein 0.5 mm≤C≤10 mm.

7. A medical water jet handpiece, characterized by: The medical water jet shield comprises a jet pipe and the medical water jet head shield according to any one of claims 1-6, the jet pipe being slidingly connected in the rod channel, one end of the jet pipe extending into the positioning cavity and being provided with a jet port, the jet port being in communication with the jet port, or the inner wall of the positioning cavity shielding the jet port.

8. The medical water jet tip of claim 7, wherein: The inner wall of the positioning cavity shields part of the jet port, and part of the jet port is in communication with the jet port.

9. The medical water jet tip of claim 7, wherein: One end of the jet pipe located in the positioning cavity is provided with a positioning portion, the positioning cavity has positioning surfaces arranged in a shape and position corresponding to the positioning portion, respectively, a plurality of the positioning surfaces defining a limiting cavity, and the positioning portion being rotationally connected to the limiting cavity.

10. The medical water jet tip of claim 7, wherein: The medical water jet head further comprises a back suction pipe for communication with a negative pressure system, the shield rod being sleeved on the outer periphery of the back suction pipe, the back suction pipe being sleeved on the outer periphery of the jet pipe, the back suction pipe being provided with a pipe suction port, and the pipe suction port being in communication through the positioning cavity.

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