Medical water jet scalpel

Abstract

The utility model discloses a medical water jet scalpel which comprises a protective sleeve and a water jet scalpel assembly, the protective sleeve is arranged on the peripheral side of the water jet scalpel assembly in a sleeved mode, the water jet scalpel assembly can rotate relative to the axis of the protective sleeve or move along the axis, the water jet scalpel assembly comprises a shell, a spray pipe and a backflow pipe, the spray pipe and the backflow pipe are arranged in the shell, and the backflow pipe is arranged on the spray pipe in a sleeved mode. The spray pipe is provided with a spray head which corresponds to a pipe orifice of the return pipe; the protective sleeve comprises a sleeve body and a fixing part used for being fixedly connected with the surface of the to-be-acted area, the two ends of the sleeve body are arranged in a penetrating mode, the fixing part is arranged at one end of the sleeve body, the sleeve body sleeves the peripheral side of the shell, and the spray head is located at the other end of the sleeve body. According to the water jet scalpel assembly, the water jet scalpel can be prevented from moving in the operation process, friction and damage of the water jet scalpel assembly to peripheral tissues in the operation process can be reduced, the tissues needing to be protected are isolated behind the protective sleeve, only target tissues are exposed in the working window range of the water jet scalpel, and it is ensured that the tissues needing to be protected cannot be accidentally injured.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a medical water knife. Background Art

[0002] As an advanced minimally invasive surgical tool, a medical water knife realizes tissue cutting and separation through high-pressure water flow and has been widely used in various medical fields. However, in actual operation, due to the lack of an effective constraint structure, when the water knife enters the organism to perform fine tissue separation, it not only increases the surgical risk but also may cause a series of complications. For example, before using the water knife for in-vivo tissue operation, an entrance must be made on the skin. As the operation progresses, the frequent movement of the water knife may cause additional damage to this opening and the surrounding tissues, such as incision enlargement, tearing, or inflammation, affecting wound healing and postoperative recovery. In addition, the human body tissue structure is complex, including sensitive tissues (such as nerves, blood vessels, and nerve sacs) that need to be protected and target tissues (such as fat and diseased tissues) that need to be removed. The unconstrained working mode of the water knife may cause the water flow to act inaccurately outside the target area, thereby damaging these sensitive tissues, which will not only increase the patient's pain but also may cause nerve injury, bleeding, or other serious complications, even endangering life or resulting in surgical failure. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is that the existing water knife lacks an effective constraint structure, and when it enters the organism to perform fine tissue separation, it not only increases the surgical risk but also may cause a series of complications.

[0004] To solve the above technical problem, the utility model provides a medical water knife, which includes a protective sleeve and a water knife assembly. The protective sleeve is sleeved on the periphery of the water knife assembly, and the water knife assembly can rotate relative to the axis of the protective sleeve or move along the axis. The water knife assembly includes a housing, a nozzle, and a return pipe. The nozzle and the return pipe are arranged in the housing, and the return pipe is sleeved on the nozzle. The nozzle has a spray head, and the spray head is arranged corresponding to the pipe orifice of the return pipe.

[0005] The protective sleeve includes a sleeve body and a fixing part for fixedly connecting with the surface of the area to be acted on. Both ends of the sleeve body are penetrated, and the fixing part is arranged at one end of the sleeve body. The sleeve body is sleeved on the periphery of the housing, and the spray head is located at the other end of the sleeve body.

[0006] Further, the fixing part includes a sleeve ear arranged on the outer peripheral side wall of the sleeve body. The sleeve ear is provided with a fixing hole for fixing with the surface of the area to be acted on.

[0007] Further, one end of the sleeve body has a notch for the water jet of the nozzle to act on the area to be acted on, and the notch constitutes the outlet of the sleeve body to isolate the area to be acted on and the protected area.

[0008] Further, the notch is inclined from one side of the sleeve body to the other side to form a first inclined surface, and the angle of the first inclined surface is 20 - 30°.

[0009] Further, the notch is inclined from one side of the sleeve body to the other side to form a first arc surface, and the first arc surface is concave.

[0010] Further, the notch is inclined from one side of the sleeve body to the other side to form a second arc surface, and the second arc surface is convex.

[0011] Further, the fixing part is made of stainless steel or titanium alloy material.

[0012] Further, the sleeve body is made of rubber or silica gel material.

[0013] Further, the nozzle includes a connecting part and a bending part, the nozzle is connected to the connecting part through the bending part, and the return pipe is sleeved on the periphery of the connecting part.

[0014] Further, a pressure pump is further included, and the pressure pump is connected to the end of the nozzle far from the nozzle.

[0015] Compared with the prior art, the medical water knife of the embodiment of the present utility model has the following beneficial effects:

[0016] The fixing part of the embodiment of the present utility model is fixed on the surface of the area to be acted on, ensuring that the whole system is stably attached to the surface of the area to be acted on, preventing the unstable movement of the water knife during operation, reducing the friction and damage of the water knife assembly to the skin opening and surrounding tissues during operation, and keeping the surgical wound minimized and clean. In addition, the through - setting at both ends of the sleeve body allows the water knife assembly to move or rotate freely therein, while the presence of the protective sleeve limits the movement range of the water knife within a safe area, avoiding accidental injury to surrounding tissues. In this embodiment, the tissues to be protected (such as nerves, blood vessels, nerve sacs) are isolated behind the protective sleeve, and only the target tissue is exposed within the working window range of the water knife, which ensures that the water knife will not accidentally injure the tissues to be protected during the cutting task, not only improving the safety of the operation, reducing the risk of complications, but also improving the operation efficiency because of reducing unnecessary hesitation and adjustment. Description of the Drawings

[0017] Figure 1 is the schematic diagram of the first state of the medical water knife of the embodiment of the present utility model;

[0018] Figure 2 It is a partial enlarged view of the first state schematic diagram of the medical water knife according to an embodiment of the present utility model;

[0019] Figure 3 It is the second state schematic diagram of the medical water knife according to an embodiment of the present utility model;

[0020] Figure 4 It is a partial enlarged view of the second state schematic diagram of the medical water knife according to an embodiment of the present utility model;

[0021] Figure 5 It is a schematic structural diagram of the first example of the protective cover according to an embodiment of the present utility model;

[0022] Figure 6 It is a schematic structural diagram of the second example of the protective cover according to an embodiment of the present utility model;

[0023] Figure 7 It is a schematic structural diagram of the third example of the protective cover according to an embodiment of the present utility model;

[0024] Figure 8 It is a schematic structural diagram of the fourth example of the protective cover according to an embodiment of the present utility model;

[0025] In the figure, 1 is the protective cover; 11 is the cover body; 12 is the fixing part; 121 is the ear; 122 is the fixing hole; 13 is the notch; 131 is the first inclined surface; 132 is the first arc surface; 133 is the second arc surface; 2 is the water knife assembly; 21 is the outer shell; 22 is the nozzle; 221 is the connecting part; 222 is the bending part; 23 is the return pipe; 24 is the nozzle; 3 is the area to be acted on; 4 is the tissue to be protected. Detailed implementation manners

[0026] The following combines the drawings and embodiments to further describe in detail the specific implementation manners of the present utility model. The following embodiments are used to illustrate the present utility model, but do not limit the scope of the present utility model.

[0027] Such as Figures 1 to 4As shown in the figure, the present utility model provides a medical water knife, which includes a protective sleeve 1 and a water knife assembly 2. The protective sleeve 1 is sleeved on the peripheral side of the water knife assembly 2, and the water knife assembly 2 can rotate relative to the axis of the protective sleeve 1 or move along the axis. The water knife assembly 2 includes a housing 21, a nozzle 22 and a return pipe 23. The nozzle 22 and the return pipe 23 are arranged in the housing 21, and the return pipe 23 is sleeved on the nozzle 22. The nozzle 22 has a nozzle head 24, and the nozzle head 24 is correspondingly arranged with the nozzle opening of the return pipe 23; The protective sleeve 1 includes a sleeve body 11 and a fixing part 12 for fixedly connecting with the surface of the area to be acted on 3. Both ends of the sleeve body 11 are penetrated, and the fixing part 12 is arranged at one end of the sleeve body 11. The sleeve body 11 is sleeved on the peripheral side of the housing 21, and the nozzle head 24 is located at the other end of the sleeve body 11.

[0028] Based on the above structure, the fixing part 12 is fixed on the surface of the area to be acted on 3, ensuring that the entire system is stably attached to the surface of the area to be acted on 3, preventing the unstable movement of the water knife during operation, reducing the friction and damage of the water knife assembly 2 to the skin opening and surrounding tissues during operation, and keeping the surgical wound minimized and clean. In addition, the through settings at both ends of the sleeve body 11 allow the water knife assembly 2 to move or rotate freely therein, while the presence of the protective sleeve 1 limits the movement range of the water knife within a safe area, avoiding accidental injury to surrounding tissues. In this embodiment, the tissue 4 to be protected (such as nerves, blood vessels, nerve sacs) is isolated behind the protective sleeve 1, and only the target tissue is exposed within the working window range of the water knife, which ensures that the water knife will not accidentally injure the tissue 4 to be protected when performing the cutting task, not only improving the safety of the operation, reducing the risk of complications, but also improving the operation efficiency because of reducing unnecessary hesitation and adjustment.

[0029] It should be noted that, Figure 1 the first state refers to the state when the water knife has not started working, Figure 3 and the second state refers to the state when the water knife has started working.

[0030] As Figure 5 shown, the fixing part 12 includes a sleeve ear 121 arranged on the outer peripheral side wall of the sleeve body 11. The sleeve ear 121 is provided with a fixing hole 122 for fixing to the surface of the area to be acted on 3.

[0031] The sleeve ear 121 of this embodiment can be one or more, and the sleeve ear 121 extends outwards from the outer peripheral side wall of the protective sleeve 1. Each sleeve ear 121 is provided with one or more fixing holes 122 for fixing instruments. By using the sleeve ear 121 and the fixing hole 122 of the fixing part 12 in combination, it can ensure that the water knife system is firmly fixed on the surface of the area to be acted on 3 during the operation. This helps to prevent unnecessary movement of the water knife due to hand shaking or pressure change during the operation, thus avoiding additional harm to the patient.

[0032] Furthermore, one end of the sleeve body 11 has a notch 13 for the water jet of the nozzle 24 to act on the area 3 to be acted upon. The notch 13 forms the outlet of the sleeve body 11 to isolate the area 3 to be acted upon from the protected area.

[0033] The notch 13 in this embodiment not only guides the direction of the water flow, but also physically defines the boundary of the surgical operation, thus clearly separating the area 3 to be acted upon (i.e., the part that needs surgical treatment) from the protected area (healthy tissues or important structures that need to be avoided from damage), ensuring that the water jet can act directly and concentratedly on the target tissue, and improving the accuracy of the surgery. The surgeon can ensure that the water jet only works within the limited notch 13 by controlling the angle and position of the water knife, avoiding the aimless diffusion of the water flow.

[0034] In addition, by physically isolating the area 3 to be acted upon from the surrounding tissues 4 that need to be protected, the notch 13 effectively avoids the accidental injury of the water jet to non-target areas. For example, nerves, blood vessels and other sensitive structures can be covered by other parts of the protective sleeve 1, only allowing the diseased or tissue to be excised to be exposed under the notch 13, thus minimizing the complications during the surgery.

[0035] As Figure 6 shown, the notch 13 is inclined from one side of the sleeve body 11 to the other side to form a first inclined surface 131, and the angle of the first inclined surface 131 is 20 - 30°.

[0036] In this embodiment, by inclining the notch 13, it aims to balance the penetration power and diffusion effect of the water flow, ensure that it can effectively separate or cut tissues, and minimize the damage to the surrounding healthy tissues. In addition, the inclined notch 13 can help the surgeon more accurately control the path of the water jet, avoid the water flow directly impacting on the structures that need to be protected (such as nerves, blood vessels, etc.), thus reducing the risks during the surgery and improving the overall safety of the surgery.

[0037] As Figure 7 shown, the notch 13 is inclined from one side of the sleeve body 11 to the other side to form a first arc surface 132, and the first arc surface 132 is concave.

[0038] Based on the above structure, when observed from the side, the edge of the notch 13 is a curve that bends inward. The concave first arc surface 132 helps to gather the water jet, making it more concentrated when reaching the area 3 to be acted upon. This focusing effect can improve the cutting efficiency and accuracy of the water knife, ensure that the water flow can accurately act on the target tissue, and will not widely disperse to the surrounding healthy tissues.

[0039] As Figure 8As shown, the notch 13 is inclined from one side of the sleeve body 11 to the other side to form a second arc surface 133, and the second arc surface 133 is a convex surface.

[0040] Based on the above structure, when observed from the side, when the edge of the notch 13 transitions from one side to the other side, it presents a curved shape that protrudes outward. The convex second arc surface 133 helps to control the degree of diffusion of the water jet. When the water jet contacts the tissue, the convex surface can play a certain guiding role, making the water flow more evenly distributed instead of being overly concentrated at one point. This diffusion effect is very useful for surgeries that require a larger treatment area. For example, when removing a large area of diseased tissue, it can make the water jet cover a wider area and improve the surgical efficiency.

[0041] In addition, the convex second arc surface 133 can reduce the rebound and splashing phenomena when the water jet contacts the tissue. Since part of the energy of the water jet is reflected back when it contacts the tissue, the setting of the convex surface can weaken this reflection, reduce the chaos in the surgical area, keep the surgical environment clean, and improve the clarity of the surgical field of view.

[0042] Furthermore, the fixing part 12 is made of stainless steel or titanium alloy. Based on the above structure, both stainless steel and titanium alloy have good mechanical strength and can withstand various stresses generated during the surgery, ensuring that the fixing part 12 does not deform or break during use. This guarantees the stability and reliability of the medical water jet system throughout the surgery. In addition, the surfaces of stainless steel and titanium alloy are smooth, not easily adsorbed with bacteria and dirt, and are easy to clean and disinfect, meeting the strict hygiene standards of medical equipment. This helps to reduce the risk of cross-infection in the operating room and ensure the sterile state of the instruments before each surgery.

[0043] Furthermore, the sleeve body 11 is made of rubber or silicone material. Based on the above structure, the softness of rubber and silicone allows the protective cover 1 to adapt to surgical areas of various shapes and sizes during the surgery. This elasticity also helps the protective cover 1 to conform to the movements when the water knife assembly 2 moves or rotates, reducing friction and potential harm to the patient's skin. In addition, when rubber and silicone materials come into contact with human tissues, they have good biocompatibility, which means they will not cause allergic reactions or tissue irritation, ensuring the safety and comfort of the patient during the surgery.

[0044] It should be noted that in the surgical environment, the protective cover 1 needs to have good sealing performance to prevent liquid penetration or leakage. The waterproof characteristics of rubber and silicone ensure this. This not only helps to keep the surgical area dry and clean, but also prevents infection and improves the safety of the surgery.

[0045] Further, the nozzle 22 includes a connecting portion 221 and a bending portion 222. The nozzle head 24 is connected to the connecting portion 221 through the bending portion 222, and the return pipe 23 is sleeved on the periphery of the connecting portion 221.

[0046] The bending portion 222 of this embodiment imparts a certain degree of flexibility to the nozzle 22, enabling the nozzle head 24 to perform precise operations in narrow or hard-to-reach spaces. In addition, the return pipe 23 is sleeved on the periphery of the connecting portion 221 and integrated with the nozzle 22. This integration ensures that the debris and liquid generated by water jet cutting can be quickly recovered, keeping the surgical area clean and clear, providing a good vision for the surgeon, and at the same time reducing the infection risk in the surgical area.

[0047] Meanwhile, through the cooperation of the connecting portion 221 and the return pipe 23, the flow rate and pressure of the water jet can be more effectively controlled, ensuring that when cutting or separating tissues, the intensity of the water jet is moderate, which can not only complete the surgical task but also avoid excessive damage or waste of water resources.

[0048] Further, a pressure pump is also included, and the pressure pump is connected to the end of the nozzle 22 away from the nozzle head 24.

[0049] The pressure pump of this embodiment generates high-pressure water flow by compressing or pushing water bodies to achieve tissue cutting. That is to say, by continuously providing water flow, the pressure pump ensures the coherence and efficiency of the surgical operation and avoids the surgical risks brought by water flow interruption or instability.

[0050] In summary, the embodiment of the present utility model provides a medical water knife. Its fixing portion 12 is fixed on the surface of the area to be acted on 3, ensuring that the whole system is stably attached to the surface of the area to be acted on 3, preventing the unstable movement of the water knife during the operation, reducing the friction and damage to the skin opening and surrounding tissues by the water knife assembly 2 during the operation, and keeping the surgical wound minimized and clean. In addition, the two ends of the sleeve body 11 are penetrated to allow the water knife assembly 2 to move or rotate freely therein, and at the same time, the presence of the protective sleeve 1 limits the movement range of the water knife within a safe area, avoiding accidental injury to the surrounding tissues. In this embodiment, the tissue 4 to be protected (such as nerves, blood vessels, nerve sacs) is isolated behind the protective sleeve 1, and only the target tissue is exposed within the working window range of the water knife. This ensures that when the water knife performs the cutting task, it will not accidentally injure the tissue 4 to be protected, not only improving the safety of the operation, reducing the risk of complications, but also improving the surgical efficiency because of reducing unnecessary hesitation and adjustment.

[0051] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and substitutions can be made, and these improvements and substitutions should also be regarded as the protection scope of the present utility model.

Claims

1. A medical water jet, characterized in that, It includes a protective sleeve and a water jet component. The protective sleeve is sleeved on the periphery of the water jet component, and the water jet component can rotate relative to the axis of the protective sleeve or move along the axis. The water jet component includes a housing, a nozzle, and a return pipe. The nozzle and the return pipe are arranged inside the housing, and the return pipe is sleeved on the nozzle. The nozzle has a spray head, and the spray head is correspondingly arranged with the nozzle opening of the return pipe; The protective sleeve includes a sleeve body and a fixing part for fixedly connecting with the surface of the area to be acted on. Both ends of the sleeve body are penetrated, and the fixing part is arranged at one end of the sleeve body. The sleeve body is sleeved on the periphery of the housing, and the spray head is located at the other end of the sleeve body.

2. The medical water jet according to claim 1, characterized in that, The fixing part includes a sleeve ear arranged on the outer peripheral side wall of the sleeve body. The sleeve ear is provided with a fixing hole for fixing with the surface of the area to be acted on.

3. The medical water knife according to claim 1, characterized in that, One end of the sleeve body has a notch for the water jet of the spray head to act on the area to be acted on. The notch forms an outlet of the sleeve body to isolate the area to be acted on and the protected area.

4. The medical water jet according to claim 3, characterized in that, The notch is inclined from one side of the sleeve body to the other side to form a first inclined surface, and the angle of the first inclined surface is 20 - 30°.

5. The medical water jet according to claim 3, characterized in that, The notch is inclined from one side of the sleeve body to the other side to form a first arc surface, and the first arc surface is concave.

6. The medical water jet according to claim 3, characterized in that, The notch is inclined from one side of the sleeve body to the other side to form a second arc surface, and the second arc surface is convex.

7. The medical water knife according to claim 1, characterized in that, The fixing part is made of stainless steel or titanium alloy material.

8. The medical water jet according to claim 1, characterized in that, The sleeve body is made of rubber or silica gel material.

9. The medical water jet according to claim 1, wherein The nozzle includes a connecting part and a bending part. The spray head is connected to the connecting part through the bending part. The return pipe is sleeved on the periphery of the connecting part.

10. The medical water knife according to claim 1, characterized in that, It also includes a pressure pump, and the pressure pump is connected to the end of the nozzle far from the spray head.

Images