Water jet scalpel assembly and medical water jet scalpel

Abstract

The embodiment discloses a water jet scalpel assembly and a medical water jet scalpel, the water jet scalpel assembly comprises an adapter, an outer pipe and a liquid inlet pipe, and a cavity channel for fluid to flow through is defined in the adapter; one end of the outer pipe is connected with one end of the adapter and is communicated with the cavity channel; the liquid inlet pipe is arranged in the outer pipe, one end of the liquid inlet pipe penetrates through the adapter and extends out of the cavity, and the other end of the liquid inlet pipe is located outside the end, away from the adapter, of the outer pipe. Wherein at least one connecting point is formed between the outer surface of the liquid inlet pipe and the inner wall of the outer pipe, and the connecting point is used for fixing the liquid inlet pipe and the outer pipe. The liquid inlet pipe is ingeniously arranged in the outer pipe, so that the diameter of the formed whole is obviously smaller than that of a water jet scalpel instrument in an existing structure, surgical incisions of a patient in the surgical process can be reduced, the wound area is reduced, and postoperative rehabilitation of the patient is better facilitated. And meanwhile, the liquid inlet pipe is fixed through the formed connecting points, and the problem that the liquid inlet pipe shakes when high-pressure fluid is introduced into the liquid inlet pipe can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a water jet component and a medical water jet. Background Art

[0002] In the prior art, some surgical instruments for forming liquid jets use high-speed jets of liquid to impact the surgical site to remove tissue. These surgical instruments for liquid jets usually include a device for pressurizing the liquid, a pressure pipeline, and a pipeline for recovering the liquid. The layout of the pressure pipeline and the recovery liquid pipeline in existing medical instruments is that the pressure pipeline is placed outside the recovery liquid pipeline. For minimally invasive or cavity-type surgeries, the size of the diameter of the medical instrument at the surgical entrance and the smoothness of the appearance have a great impact on the control of surgical wound infection; for minimally invasive surgeries that require the use of laparoscopy, the size of the diameter of the medical instrument and the smoothness of the appearance also have a great impact on the versatility and economy of the supporting instruments. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a water jet assembly and a medical water jet.

[0004] In a first aspect, an embodiment of the present application provides a water jet assembly, comprising:

[0005] An adapter, the interior of which defines a cavity for fluid to flow through;

[0006] An outer tube, one end of which is connected to one end of the adapter and communicates with the cavity;

[0007] A liquid inlet pipe is arranged in the outer tube, and one end of the liquid inlet pipe passes through the adapter and extends out of the cavity, and the other end of the liquid inlet pipe is located outside the outer tube away from one end of the adapter;

[0008] Wherein, at least one connection point is formed between the outer surface of the liquid inlet pipe and the inner wall of the outer pipe, and the connection point is used to fix the liquid inlet pipe and the outer pipe.

[0009] In one embodiment, a protrusion is provided on one side of the adapter, an inner cavity connected to the cavity is formed inside the protrusion, and one end of the liquid inlet tube extending into the cavity extends from the inner cavity to the outside of the adapter.

[0010] In one embodiment, an angle between the inner cavity and the cavity is between 0 degrees and 90 degrees.

[0011] In one embodiment, one end of the liquid inlet tube extending out of the outer tube is bent along the direction of the outer tube to form a bent portion, and a port of the bent portion is opposite to a port of the outer tube.

[0012] In one embodiment, the width of the curved portion is smaller than the inner diameter of the outer tube.

[0013] In one embodiment, the ratio between the width of the curved portion and the inner diameter of the outer tube is 1:10 to 1:5.

[0014] In one embodiment, the water jet assembly further comprises a fixing sleeve, the fixing sleeve is connected to an end of the outer tube away from the adapter, and the fixing sleeve is formed with a sleeve space for sleeve-connecting the liquid inlet pipe.

[0015] In one embodiment, the end of the adapter away from the outer tube is used to connect to the return pipe, and a plurality of spaced-apart retaining rings are provided on the outer surface of the end of the adapter connected to the return pipe.

[0016] In one embodiment, a fixing sheet for fixing is provided on the surface of the outer tube.

[0017] The embodiment of the present application also provides a medical water jet, comprising a liquid storage tank, a hydraulic pump, and the water jet assembly as described in the first aspect;

[0018] The liquid inlet of the hydraulic pump is connected to the liquid storage tank, and the liquid storage port of the hydraulic pump is connected to the liquid inlet end of the liquid inlet pipe in the water knife assembly.

[0019] Compared with the prior art, the above technical solution provided by the embodiment of the present application has the following beneficial effects:

[0020] The inlet pipe is cleverly arranged inside the outer pipe, so that the overall diameter is significantly smaller than that of the water jet device in the existing structure, thereby reducing the incision of the patient during the operation, reducing the wound area, and being more conducive to the patient's postoperative recovery. At the same time, the inlet pipe is fixed by the connection point formed between the outer surface of the inlet pipe and the inner wall of the outer pipe, which can effectively prevent the inlet pipe from shaking when the high-pressure fluid is introduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of an embodiment of a water jet assembly of the present application;

[0022] Figure 2 It is a structural schematic diagram of an outer tube and a fixed sleeve in a water jet assembly of the present application;

[0023] Figure 3 It is a structural schematic diagram of a transfer joint in a water jet assembly of the present application;

[0024] Figure 4 It is a structural schematic diagram of another embodiment of a water jet assembly of the present application.

[0025] Numbers in the figure:

[0026] 10. Adapter; 10a. Cavity; 20. Outer tube; 30. Liquid inlet tube; 30a. Bending portion; 40. Connection point; 50. Raised portion; 60. Fixed sleeve; 70. Reflux pipe; 80. Retaining ring; 90. Fixed sheet; c. Angle. DETAILED DESCRIPTION

[0027] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in a specific direction, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0028] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0029] The water jet assembly of the utility model belongs to the component of the medical water jet, which is suitable for delivering fluid to the surgical site so that the doctor can cut, ablate, peel or remove the tissue, etc., which can make the surgical process quick and simple, and effectively shorten the operation time, make the treatment more reliable, and the operation is completely controllable, without negative damage to the vocal cords by physical, chemical, biological and other factors. In addition, it should be noted that the fluid in this article refers to high-pressure water flow or high-pressure saline flow or other high-pressure liquid flow.

[0030] Please refer to Figures 1 to 4 An embodiment of the present application provides a water jet assembly, including an adapter 10, an outer tube 20 and a liquid inlet tube 30.

[0031] Specifically, the interior of the adapter 10 defines a cavity 10a for fluid to flow through; one end of the outer tube 20 is connected to one end of the adapter 10 and communicates with the cavity 10a; the liquid inlet tube 30 is disposed in the outer tube 20, and one end of the liquid inlet tube 30 passes through the adapter 10 and extends out of the cavity 10a, and the other end of the liquid inlet tube 30 is located outside the outer tube 20 away from one end of the adapter 10. At least one connection point 40 is formed between the outer surface of the liquid inlet tube 30 and the inner wall of the outer tube 20, and the connection point 40 is used to fix the liquid inlet tube 30 to the outer tube 20.

[0032] Exemplarily, the adapter 10 has a first connection end and a second connection end relative to each other. For ease of description, the end of the adapter 10 connected to the outer tube 20 is referred to as the first connection end, and the end connected to the return pipe 70 is referred to as the second connection end. One end of the outer tube 20 is extended from the first connection end into the interior of the adapter 10, and glue is added between the inner wall of the outer tube 20 and the adapter 10 by dispensing, so that the sealing of the connection between the outer tube 20 and the adapter 10 can be strengthened to prevent the refluxed waste liquid from flowing out from the gap between the outer tube 20 and the adapter 10. In addition, when the second connection end of the adapter 10 is connected to the return pipe 70, it is also necessary to seal the gap between the second connection section and the return pipe 70. Specifically, a sealing structure commonly used in the prior art can be used, and this is not limited.

[0033] Exemplarily, after the liquid inlet tube 30 is arranged in the outer tube 20, the liquid inlet tube 30 needs to be fixed to avoid shaking during the process of passing the high-pressure fluid into the liquid inlet tube 30, which affects the normal surgical operation. To this end, in this embodiment, at least one connection point 40 is formed between the outer surface of the liquid inlet tube 30 and the inner wall of the outer tube 20, and the liquid inlet tube 30 is fixedly connected to the outer tube 20 by the connection point 40, so as to avoid the problem of shaking of the liquid inlet tube 30 when the high-pressure fluid is passed. In addition, it should be noted that the "connection point 40" mentioned above refers to the welding point formed by laser welding. In order to ensure that the liquid inlet tube 30 can be more stable, the number of welding points formed by laser welding can be 2 to 5, but not limited to this. Among them, the width of the formed welding point is between 0.01mm and 5mm, and the length of the welding point is between 0.01mm and 100mm.

[0034] In addition, it should be noted that the number of the liquid inlet pipes 30 provided in the outer tube 20 may be one or more. When the number of the liquid inlet pipe 30 is only one, the liquid inlet pipe 30 may be connected to the upper inner wall of the liquid inlet pipe 30 or to the lower inner wall of the liquid inlet pipe 30, and this is not limited. When the number of the liquid inlet pipes 30 is two, the two liquid inlet pipes 30 are connected to the upper inner wall and the lower inner wall of the outer tube 20 respectively.

[0035] Exemplarily, one end of the liquid inlet tube 30 that passes through the adapter 10 and extends outside the cavity 10a is used to connect to a pressurized fluid device, and the end of the liquid inlet tube 30 located outside the outer tube 20 is used to extend to the surgical site. The high-pressure fluid is introduced into the liquid inlet tube 30 through the pressurized fluid device, and the high-pressure fluid is output from the end of the liquid inlet tube 30 located outside the outer tube 20 to act on the surgical site, thereby realizing operations such as cutting, ablation, stripping or removal of tissue.

[0036] Based on the water jet assembly of the above technical features, the liquid inlet pipe 30 is cleverly arranged inside the outer tube 20, so that the overall diameter formed is significantly smaller than that of the water jet device in the existing structure, thereby reducing the incision of the patient during the operation, reducing the wound area, and being more conducive to the patient's postoperative recovery. At the same time, the liquid inlet pipe 30 is fixed by the connection point 40 formed between the outer surface of the liquid inlet pipe 30 and the inner wall of the outer tube 20, which can effectively prevent the problem of shaking of the liquid inlet pipe 30 when the high-pressure fluid is introduced.

[0037] In one embodiment, a protrusion 50 is provided on one side of the adapter 10 , and an inner cavity connected to the cavity 10 a is formed inside the protrusion 50 , and one end of the liquid inlet tube 30 extending into the cavity 10 a extends from the inner cavity to the outside of the adapter 10 .

[0038] For example, the protrusion 50 can be connected to the adapter 10 by integral injection molding, so that the overall strength can be enhanced, but it is not limited thereto. In addition, there is no specific limitation on the shape of the protrusion 50, as long as it is commonly used by those skilled in the art, it is applicable to the present application, but for ease of understanding, this embodiment is described by taking the protrusion 50 as a triangle as an example.

[0039] It should be noted that the protrusion 50 can be provided on the lower side of the adapter 10, or on the upper side of the adapter 10, or on both the upper and lower sides of the adapter 10, depending on the number of liquid inlet pipes 30 provided and the position of the liquid inlet pipes 30 passing through the adapter 10. For example, if only one liquid inlet pipe 30 is provided, and the outer surface of the liquid inlet pipe 30 is connected to the upper inner wall of the outer tube 20, the protrusion 50 is provided only on the upper side of the adapter 10, so that the liquid inlet pipe 30 passes through the inner cavity of the protrusion 50 and extends to the outside after passing through the adapter 10; if two liquid inlet pipes 30 are provided, and the outer surfaces of the two liquid inlet pipes 30 are respectively connected to the upper inner wall and the lower inner wall of the outer tube 20, the protrusion 50 is provided on both the upper and lower sides of the adapter 10, so that the two liquid inlet pipes 30 pass through the inner cavity of their respective protrusions 50 and extend to the outside after passing through the adapter 10.

[0040] For example, since one end of the liquid inlet tube 30 passes through the connecting tube and passes through the inner cavity to extend out of the adapter 10, the liquid inlet tube 30 and the outer tube 20 can form a bifurcated arrangement. However, in order to facilitate the connection of the liquid inlet tube 30 with the pressurized fluid device, in one embodiment, an angle c of less than 90 degrees is formed between the inner cavity and the cavity 10a. In this way, the liquid inlet tube 30 passing through the adapter 10 can have a certain distance from the adapter 10, which facilitates the subsequent connection of the liquid inlet tube 30 with the pressurized fluid device.

[0041] In one embodiment, the angle c is between 0 and 90 degrees. Specifically, when the angle c is less than 0 degrees, the liquid inlet tube 30 cannot smoothly extend from the inner cavity to the outside of the adapter 10; when the angle c is greater than 90 degrees, the liquid inlet tube 30 extends from the outside of the adapter 10 along the vertical direction of the adapter 10, which increases the bending of the liquid inlet tube 30 and easily causes damage to the liquid inlet tube 30.

[0042] In one embodiment, one end of the liquid inlet pipe 30 extending out of the outer pipe 20 is bent along the direction of the outer pipe 20 to form a bent portion 30 a , and the end of the bent portion 30 a is opposite to the end of the outer pipe 20 .

[0043] Exemplarily, a curved portion 30a that bends along the direction of the outer tube 20 is formed at one end of the liquid inlet tube 30 that extends out of the outer tube 20, so that after the high-pressure fluid in the liquid inlet tube 30 acts on the surgical site, the waste liquid can quickly flow into the outer tube 20, and after passing through the cavity 10a of the conversion head, it flows back to the reflux pipe 70, thereby achieving rapid outflow of the waste liquid into the waste liquid collector.

[0044] In one embodiment, the width of the curved portion 30a is smaller than the inner diameter of the outer tube 20. It should be noted that the "width" mentioned above refers to the outer diameter of the liquid inlet tube when it is in a curved state. Figure 1 Specifically, if the width of the curved portion 30a is greater than the inner diameter of the outer tube 20, some of the fluid flowing out of the liquid inlet tube 30 will not directly fall into the outer tube 20 after acting on the surgical site, and will need to flow later to enter the outer tube 20, and the time required for reflux is longer.

[0045] In one embodiment, the ratio between the width of the curved portion 30a and the inner diameter of the outer tube 20 is 1:10 to 1:5 (i.e. Figure 1 Preferably, the width of the curved portion 30a is set to account for 2 / 3 of the inner diameter of the outer tube 20, so that most of the waste liquid after being applied to the surgical site by the liquid inlet tube 30 can be directly dropped into the outer tube 20, which is conducive to accelerating the reflux speed of the waste liquid and shortening the reflux time.

[0046] In one embodiment, the water jet assembly further includes a fixing sleeve 60, which is connected to one end of the outer tube 20 away from the adapter 10, and the fixing sleeve 60 forms a sleeve space for sleeve-connecting the liquid inlet pipe 30. In this way, by arranging the fixing sleeve 60 at one end of the outer tube 20 away from the adapter 10, and forming a curved sleeve space in the fixing sleeve 60, so that the liquid inlet pipe 30 can form a curved portion 30a along the curved sleeve space after extending from the outer tube 20, the high-pressure fluid flowing out of the liquid inlet pipe 30 can directly enter the outer tube 20, thereby shortening the reflux time.

[0047] In one embodiment, the end of the adapter 10 away from the outer tube 20 is used to connect to the return pipe 70, and a plurality of spaced retaining rings 80 are provided on the outer surface of the end of the adapter 10 connected to the return pipe 70. In this way, after the end of the adapter 10 away from the outer tube 20 is connected to the return pipe 70, the retaining ring 80 provided on the outer surface of the adapter 10 will abut against the inner wall of the return pipe 70, which can effectively enhance the sealing performance and prevent water from penetrating.

[0048] In one embodiment, a fixing sheet 90 for fixing is provided on the surface of the outer tube 20. In this way, the outer tube 20 and the liquid inlet tube 30 can be hung by the fixing sheet 90 after subsequent use, which has a simple structure and is easy to use.

[0049] An embodiment of the present application also provides a medical water knife, including a liquid storage tank, a hydraulic pump and a water knife assembly as described in the above embodiment; wherein the liquid inlet of the hydraulic pump is connected to the liquid storage tank, and the liquid storage port of the hydraulic pump is connected to the liquid inlet end of the liquid inlet pipe 30 in the water knife assembly.

[0050] Exemplarily, the fluid in the fluid storage tank is introduced into the fluid inlet tube 30 through a hydraulic pump, and then flows into the surgical site through the fluid inlet tube 30, thereby achieving cutting, ablation, stripping or removal of tissue.

[0051] In addition, the medical water jet according to the embodiment of the present disclosure adopts the above-mentioned water jet assembly, and the technical effect possessed is consistent with the above-mentioned water jet assembly, which will not be repeated here.

[0052] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A water jet assembly, characterized in that: include: An adapter, the interior of which defines a cavity for fluid to flow through; An outer tube, one end of which is connected to one end of the adapter and communicates with the cavity; A liquid inlet pipe is arranged in the outer tube, and one end of the liquid inlet pipe passes through the adapter and extends out of the cavity, and the other end of the liquid inlet pipe is located outside the outer tube away from one end of the adapter; Wherein, at least one connection point is formed between the outer surface of the liquid inlet pipe and the inner wall of the outer pipe, and the connection point is used to fix the liquid inlet pipe and the outer pipe.

2. The water jet assembly according to claim 1, characterized in that: A protrusion is provided on one side of the adapter, an inner cavity communicating with the cavity is formed inside the protrusion, and one end of the liquid inlet tube extending into the cavity extends from the inner cavity to the outside of the adapter.

3. The water jet assembly according to claim 2, characterized in that: An angle between the inner cavity and the cavity channel is between 0 degrees and 90 degrees.

4. The water jet assembly according to claim 1, characterized in that: One end of the liquid inlet pipe extending out of the outer pipe is bent along the direction of the outer pipe to form a bent portion, and the port of the bent portion is directly opposite to the port of the outer pipe.

5. The water jet assembly according to claim 4, characterized in that: The width of the bent portion is smaller than the inner diameter of the outer tube.

6. The water jet assembly according to claim 5, characterized in that: The ratio between the width of the curved portion and the inner diameter of the outer tube is 1:10 to 1:

5.

7. The water jet assembly according to claim 4, characterized in that: The water jet assembly further comprises a fixing sleeve, which is connected to an end of the outer tube away from the adapter, and the fixing sleeve is formed with a sleeve space for sleeve-connecting the liquid inlet pipe.

8. The water jet assembly according to claim 1, characterized in that: The end of the adapter away from the outer tube is used for connecting to the return pipe, and a plurality of spaced retaining rings are provided on the outer surface of the end of the adapter connected to the return pipe.

9. The water jet assembly according to claim 1, characterized in that: A fixing sheet for fixing is arranged on the surface of the outer tube.

10. A medical water jet, characterized in that: A water jet assembly comprising a fluid storage tank, a hydraulic pump and any one of claims 1 to 9; The liquid inlet of the hydraulic pump is connected to the liquid storage tank, and the liquid storage port of the hydraulic pump is connected to the liquid inlet end of the liquid inlet pipe in the water knife assembly.

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