Integrated medical water jet scalpel nozzle

Abstract

The utility model provides an integrated medical water jet scalpel nozzle, and relates to the technical field of water jet scalpel nozzles. According to the integrated medical water jet nozzle, the thickened sheet-shaped nozzle is coaxially welded to the head end of the flow channel pipe with the same outer diameter, the boss is inserted into the flow channel pipe, the connection stability of the sheet-shaped nozzle and the flow channel pipe is improved, and the machining difficulty is reduced; the nozzle is integrally formed, the outer wall is smooth, no step face exists, nozzle deformation is avoided, the situation that a wound is secondarily wound by the nozzle is avoided, machining difficulty is low, and efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of water jet nozzle technology, specifically to an integrated medical water jet nozzle. Background Technology

[0002] Wound debridement is a crucial step in clinical wound management. Traditional debridement methods typically employ sharps, enzymatic debridement, and biological debridement. However, these methods suffer from drawbacks such as cumbersome procedures, low efficiency, imprecise cleaning, and failure to promptly remove contaminants. In recent years, a water jet debridement method has emerged. This method utilizes high-pressure water jets to cut and clean the wound, while simultaneously leveraging the Venturi effect generated by the high-pressure water jets to adsorb and remove excised necrotic tissue, contaminants, and other foreign objects. Compared to traditional debridement methods, medical water jet debridement offers advantages such as high speed, precise cleaning, and timely removal of contaminants.

[0003] The water jet nozzle is a crucial component of a medical water jet, ensuring its high-speed and precise wound-cleaning performance. The nozzle consists of a plate-shaped nozzle mounted at the end of the flow channel. Currently, nozzles are typically installed using a press-fit method. Appropriate overpressure is required during the press-fit process to secure the nozzle firmly; otherwise, the performance of the medical water jet will be affected. This manifests in several ways: insufficient pressure can cause nozzle wobbling; excessive pressure can lead to nozzle deformation; and nozzles designed for press-fit systems often have a pressure-bearing structure. This structure accumulates stress during press-fit fixing and releases it slowly, potentially causing the nozzle to perform well during factory inspection but degrade in actual use. Therefore, press-fit nozzle assembly requires high nozzle machining precision and high-precision press-fit equipment; otherwise, nozzle deformation is highly likely, affecting the cutting performance of the medical water jet.

[0004] Nozzles can also be fixed to the head end of the flow channel by welding. However, conventional sheet nozzles are relatively thin, and welding can easily cause nozzle deformation. Furthermore, welding burrs affect the smoothness of the water jet nozzle's outer wall, making them unsuitable for wound cleaning in medical water jet applications and potentially causing secondary trauma to the wound. There are also sleeve-shaped nozzles, such as those described in patent 201520324118X. While these can avoid nozzle deformation during welding, welding burrs still affect the smoothness of the water jet nozzle's outer wall and create stepped surfaces, easily leading to secondary wound trauma. Both the aforementioned sleeve-shaped nozzles and conventional sheet nozzles mostly use nozzle channels with rounded inlet angles. The rounded arc is difficult to manufacture, and the large change in curvature of the inlet angle results in significant pressure variations within the nozzle channel, easily leading to nozzle fatigue deformation and reducing the effective service life of the medical water jet. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an integrated medical water jet nozzle, solving the problem of high processing difficulty in medical water jet nozzles.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An integrated medical water jet nozzle, the integrated medical water jet nozzle comprising: a plate-shaped nozzle and a flow channel tube;

[0008] The inner wall of the plate-shaped nozzle is provided with an axially extending boss, which is inserted into the flow channel tube.

[0009] The boss has a funnel-shaped liquid guiding channel extending along the axis, and the outer end of the funnel-shaped liquid guiding channel is connected to the nozzle channel that axially penetrates the plate-shaped nozzle.

[0010] The outer diameter of the plate-shaped nozzle is the same as the outer diameter of the flow channel tube, and the plate-shaped nozzle and the flow channel tube are coaxially welded.

[0011] Preferably, the thickness D of the sheet-like nozzle satisfies: 0.2mm≤D≤0.5mm.

[0012] Preferably, the boss is interference-fitted with the flow channel pipe.

[0013] Preferably, the ratio of the length to the diameter of the nozzle channel is i > 1.

[0014] Preferably, the ratio i of the length to the diameter of the nozzle channel satisfies: 2≤i≤4.

[0015] Preferably, the angle α between the cone surface of the funnel-shaped liquid guiding channel and the axis satisfies: 60°≤α≤120°.

[0016] Preferably, the integrated medical water jet nozzle is made of one of the following materials: stainless steel, nickel-cobalt alloy, titanium alloy, or ceramic.

[0017] Preferably, a welding sheet is sandwiched between the inner wall of the sheet nozzle and the head end of the flow channel tube and fixed by vacuum welding.

[0018] Preferably, welding grooves are formed on the inner wall edge of the sheet nozzle and / or the head edge of the flow channel.

[0019] This invention provides an integrated medical water jet nozzle. Compared with the prior art, it has the following advantages:

[0020] Beneficial effects:

[0021] In this invention, the integrated medical water jet nozzle uses a thickened sheet nozzle coaxially welded to the end of a flow channel tube with the same outer diameter. The boss is inserted into the flow channel tube, which improves the connection stability between the sheet nozzle and the flow channel tube and reduces the processing difficulty. The nozzle is integrally formed, with a smooth outer wall and no step surface, which avoids nozzle deformation and avoids secondary trauma to the wound caused by the nozzle. The process is simple and efficient. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is an exploded view of the integrated medical water jet nozzle in Embodiment 1 of this utility model.

[0024] Figure 2 This is an assembly diagram of the integrated medical water jet nozzle in Embodiment 1 of this utility model.

[0025] Figure 3 This is an assembly diagram of the integrated medical water jet nozzle in Embodiment 2 of this utility model.

[0026] Figure 4 This is an assembly diagram of the integrated medical water jet nozzle in Embodiment 3 of this utility model.

[0027] Figure 5 This is an assembly diagram of the integrated medical water jet nozzle in Embodiment 4 of this utility model.

[0028] The reference numerals in the figure are: plate-shaped nozzle 10, boss 11, funnel-shaped liquid guiding channel 12, nozzle channel 13, and flow channel 20. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] This application provides an integrated medical water jet nozzle, which solves the problem of high processing difficulty in medical water jet nozzles.

[0031] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0032] Example 1:

[0033] like Figure 1 , Figure 2As shown, this utility model provides an integrated medical water jet nozzle, which includes: a sheet-shaped nozzle 10 and a flow channel tube 20;

[0034] The inner wall of the plate nozzle 10 is provided with an axially extending boss 11, which is inserted into the flow channel tube 20.

[0035] The boss 11 has a funnel-shaped liquid guiding channel 12 extending along the axis, and the outer end of the funnel-shaped liquid guiding channel 12 is connected to the nozzle channel 13 that axially penetrates the plate-shaped nozzle 10.

[0036] The outer diameter of the plate nozzle 10 is the same as the outer diameter of the flow channel tube 20, and the plate nozzle 10 and the flow channel tube 20 are coaxially welded.

[0037] like Figure 1 , Figure 2 As shown, the thickness D of the sheet nozzle 10 satisfies: 0.2mm≤D≤0.5mm.

[0038] like Figure 1 , Figure 2 As shown, the boss 11 is interference-fitted with the flow channel 20, and the outer diameter of the boss 11 is slightly smaller than or equal to the inner diameter of the flow channel 20.

[0039] like Figure 1 , Figure 2 As shown, the ratio of the length to the diameter of the nozzle channel 13 is i > 1, so as to ensure that the water line sprayed from the nozzle channel 13 remains cylindrical and does not scatter within a specified length, so that the water line has a qualified cutting force.

[0040] The ratio i of the length to the diameter of the nozzle channel 13 satisfies: 2≤i≤4.

[0041] like Figure 1 , Figure 2 As shown, the angle α between the cone surface of the funnel-shaped liquid guiding channel 12 and the axis satisfies: 60°≤α≤120°.

[0042] The integrated medical water jet nozzle is made of one of the following materials: stainless steel, nickel-cobalt alloy, titanium alloy, or ceramic.

[0043] The inner wall of the sheet nozzle 10 is sandwiched between the head end of the flow channel tube 20 and a welding sheet is fixed by vacuum welding.

[0044] Example 2:

[0045] like Figure 3 As shown, a welding groove is formed on the inner wall edge of the sheet-like nozzle 10.

[0046] Example 3:

[0047] like Figure 4As shown, a welding groove is formed at the head edge of the flow channel 20.

[0048] Example 4:

[0049] like Figure 5 As shown, welding grooves are provided on the inner wall edge of the sheet nozzle 10 and the head edge of the flow channel 20.

[0050] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0051] 1. In this embodiment of the utility model, the integrated medical water jet nozzle adopts a thickened sheet nozzle 10 coaxially welded to the head end of the flow channel tube 20 with the same outer diameter. The boss 11 is inserted into the flow channel tube 20 to improve the connection stability between the sheet nozzle 10 and the flow channel tube 20 and reduce the processing difficulty. The nozzle is integrally formed, with a smooth outer wall and no step surface, which avoids nozzle deformation and avoids the situation of the nozzle causing secondary trauma to the wound. The processing difficulty is small and the efficiency is high.

[0052] 2. In this embodiment of the utility model, the funnel-shaped liquid guiding channel 12 is formed on the boss 11, which greatly reduces the fatigue deformation of the nozzle and improves the service life of the nozzle.

[0053] 3. In this embodiment of the utility model, a welding groove for accommodating the solder is provided at the welding point, and the solder outside the welding groove is ground off after welding is completed; or a welding sheet is sandwiched between the sheet nozzle 10 and the flow channel tube 20 for vacuum welding; both can ensure that the outer surface of the welding point is smooth and effectively prevent the nozzle from causing secondary damage to the wound.

[0054] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0055] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An integrated medical water jet nozzle, characterized in that, The integrated medical water jet nozzle includes: a sheet-shaped nozzle (10) and a flow channel (20); The inner wall of the plate nozzle (10) is provided with an axially extending boss (11), which is inserted into the flow channel tube (20). The boss (11) has a funnel-shaped liquid guiding channel (12) extending along the axis, and the outer end of the funnel-shaped liquid guiding channel (12) is connected to the nozzle channel (13) of the axially penetrating plate nozzle (10). The outer diameter of the plate nozzle (10) is the same as the outer diameter of the flow channel pipe (20), and the plate nozzle (10) and the flow channel pipe (20) are coaxially welded.

2. The integrated medical water jet nozzle as described in claim 1, characterized in that, The thickness D of the sheet nozzle (10) satisfies: 0.2mm≤D≤0.5mm.

3. The integrated medical water jet nozzle as described in claim 1, characterized in that, The boss (11) is interference-fitted with the flow channel (20).

4. The integrated medical water jet nozzle as described in claim 1, characterized in that, The ratio of the length to the diameter of the nozzle channel (13) is i > 1.

5. The integrated medical water jet nozzle as described in claim 1, characterized in that, The ratio i of the length to the diameter of the nozzle channel (13) satisfies: 2≤i≤4.

6. The integrated medical water jet nozzle as described in claim 1, characterized in that, The angle α between the cone surface of the funnel-shaped liquid channel (12) and the axis satisfies: 60°≤α≤120°.

7. The integrated medical water jet nozzle as described in claim 1, characterized in that, The integrated medical water jet nozzle is made of one of the following materials: stainless steel, nickel-cobalt alloy, titanium alloy, or ceramic.

8. The integrated medical water jet nozzle as described in claim 1, characterized in that, The inner wall of the sheet nozzle (10) and the head end of the flow channel (20) are clamped together and fixed by vacuum welding.

9. The integrated medical water jet nozzle as described in claim 1, characterized in that, Welding grooves are provided on the inner wall edge of the sheet nozzle (10) and / or the head edge of the flow channel (20).

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