Needle-knife kit

Abstract

The invention discloses a needle knife kit which comprises a syringe assembly, and the syringe assembly comprises a syringe barrel used for containing fluid and enabling the fluid to be discharged from one end. The needle-knife suite further comprises a needle-knife switching assembly, and the needle-knife switching assembly comprises a connector which protrudes out of and is communicated with the fluid discharge end of the syringe; one end of the outer sleeve sleeves the connector and can move in the axial direction of the connector; the inner needle knife is arranged in the outer sleeve in a clearance mode, a blade is arranged at one end of the inner needle knife, and the blade of the inner needle knife can be exposed or retracted into the outer sleeve after the outer sleeve moves. According to the needle knife, the sharp and blunt needle knife head can be replaced and used, cleaning liquid and medicine liquid can be injected, use is convenient, and the functions are diversified.

Description

Technical Field

[0001] This application relates to the field of minimally invasive medical devices in traditional Chinese medicine, specifically a needle knife kit. Background Technology

[0002] The needle knife is an acupuncture tool made of metal, resembling both a needle and a knife in shape. It is a minimally invasive acupuncture technique unique to Traditional Chinese Medicine (TCM), developed from the ancient Chinese nine-needle system, drawing on modern medical surgical, pathological, physiological, and anatomical theories, and incorporating advancements in biomechanics and other natural sciences. The State Administration of Traditional Chinese Medicine has promoted the needle knife technique nationwide as a suitable TCM technique for grassroots treatment. Needle knife therapy is a closed release technique that falls between surgical and non-surgical methods, showcasing the characteristics and advantages of TCM in treating such diseases. Simultaneously, it utilizes modern medical knowledge of anatomy and pathology for localization and treatment, ensuring the safety of the technique. It has proven effective in treating chronic soft tissue injuries, degenerative diseases such as bone hyperplasia, and spinal-related diseases.

[0003] The external structure of a needle knife mainly consists of three parts: the blade, the body, and the handle. The blade at the front end, as the core component, plays a crucial role in treating diseases. However, while releasing soft tissues, the needle knife also causes destructive damage. Although this damage is subtle, minimizing it would make it more acceptable to clinicians and patients. It is worth noting that the ability to flexibly switch between sharp and blunt (non-sharp) release is an important strategy for optimizing the needle knife effect and avoiding additional trauma. The freely convertible shape of the needle knife tip embodies the diagnostic principles of Traditional Chinese Medicine (TCM), namely, adaptively adjusting the needle knife's shape to regulate the complex and diverse lesions in the body—the principle of "sharp when necessary, blunt when necessary." For example, during acupuncture treatment, a sharp structure is used to penetrate the skin, then a blunt structure is used to peel and unblock physiological tissues directly to the lesion. At the lesion, a sharp structure is then used again for loosening and depressurization, achieving the purpose of loosening and unblocking while effectively reducing damage to normal tissues (or non-target tissues). Furthermore, the interchangeability of blunt and sharp needles is a common clinical application; however, the process of changing needles—switching between "outside" and "inside" the body—is not only complex but also easily causes psychological burden on patients. Moreover, the combination of acupuncture and medication is a current hot topic in the field of TCM external treatment. As a needle-like structure, the needle knife can deliver medication into the body in the form of a syringe, further exerting its fluid-dilating, depressurizing, and pharmacological effects to achieve the purpose of treating diseases. Therefore, designing a tool with a freely convertible needle knife tip that can be used in conjunction with medication is a problem that urgently needs to be solved in the field of needle knife medicine. Summary of the Invention

[0004] The purpose of this application is to provide a needle knife kit that allows for the replacement of both sharp and blunt needle knife tips. To this end, this application adopts the following technical solution:

[0005] A needle knife kit includes a syringe assembly comprising a syringe barrel for containing fluid and allowing the fluid to exit from one end, and a needle knife switching assembly comprising:

[0006] A connector that protrudes and communicates with the fluid discharge end of the syringe;

[0007] An outer sleeve, one end of which is fitted over the connector and is movable along the axial direction of the connector;

[0008] The inner needle knife is located inside the outer tube with a gap and one end is a blade. The inner needle knife can expose the blade or retract the blade into the outer tube after the outer tube is moved.

[0009] In at least one embodiment, the syringe assembly further includes a plunger inserted into one end of the syringe barrel for discharging fluid from the other end of the syringe barrel.

[0010] In at least one embodiment, the surface of the syringe is provided with a scale for measuring the volume of the fluid inside.

[0011] In at least one embodiment, the connector is threadedly connected to the outer sleeve.

[0012] In at least one embodiment, the connector includes a large connecting cylinder and a small connecting cylinder of different diameters, coaxially connected in series, and a shoulder that transitions between the two; the large connecting cylinder is vertically fixed to the injection cylinder and communicates with the interior of the injection cylinder; the small connecting cylinder has external threads and is threaded to the inner wall of one end of the outer sleeve.

[0013] In at least one embodiment, the upper part of the outer sleeve is provided with a laterally protruding wing plate.

[0014] In at least one embodiment, the wingplate is provided in two pieces and is symmetrically distributed about the axis of the outer tube.

[0015] In at least one embodiment, the needle knife switching assembly further includes an anti-dislodgement cap, which includes a sleeve, an anti-dislodgement ring, and a connecting rod; the sleeve is fitted onto the end of the connector, and both the sleeve and the connector have multiple overlapping through holes on their sidewalls, with a gap between the sleeve and the outer sleeve; both ends of the connecting rod pass through the outer sleeve and are fixedly connected to the sidewall of the sleeve; the outer edge of the anti-dislodgement ring is fixedly connected to the inner wall of the end of the sleeve and covers the port of the connector; the inner needle knife includes a connecting seat, a long handle, a connecting shaft, and a limiting piece; the limiting piece is larger than the inner ring of the anti-dislodgement ring and is rotatably disposed between the anti-dislodgement ring and the connecting rod; one end of the connecting shaft is fixedly connected to the limiting piece, and the other end passes through the anti-dislodgement ring and is fixedly connected to the connecting seat; the long handle is arranged along the axial direction of the outer sleeve, one end of which is fixedly connected to the connecting seat, and the other end is shaped like a blade.

[0016] In at least one embodiment, the through holes are uniformly distributed circumferentially along the sidewall of the sleeve.

[0017] In at least one embodiment, the inner wall of the outer sleeve is provided with two sliding grooves parallel to the axial direction, and the two sides of the long handle are slidably inserted into the two sliding grooves respectively.

[0018] Compared with the prior art, this application can achieve the following beneficial effects: 1. This application has a retractable inner needle knife inside the outer tube, and the front end of the inner needle knife is a sharp blade. When in use, the blade can be exposed or retracted, so that the entire needle knife kit can be transformed into a blunt outer tube blade and a sharp inner needle knife blade when in use, which is convenient to use; 2. The rear end of the outer tube of this application is connected to a syringe assembly, which can clean the blade and the loosened area of ​​soft tissue to a certain extent by injecting cleaning fluid, and can also inject the required medicine, making it versatile. Attached Figure Description

[0019] One or more embodiments of this application will now be described by way of example only with reference to the accompanying drawings, in which:

[0020] Figure 1 This is a schematic diagram of the overall structure of a needle knife kit provided in an embodiment of this application;

[0021] Figure 2 This is a perspective view of the needle knife switching component according to an embodiment of this application;

[0022] Figure 3 This is a cross-sectional view of the needle knife switching component according to an embodiment of this application;

[0023] Figure 4 This is an exploded view of the needle knife switching component according to an embodiment of this application;

[0024] Figure 5This is a schematic diagram of the connector structure according to an embodiment of this application;

[0025] Figure 6 This is a schematic diagram of the anti-slip cap structure according to an embodiment of this application;

[0026] Figure 7 This is a schematic diagram of the internal needle knife structure according to an embodiment of this application;

[0027] Figure 8 This is a schematic diagram of the outer tube structure according to an embodiment of this application.

[0028] The following numbers are labeled in the diagram: 100, syringe assembly; 110, syringe barrel; 120, plunger; 200, needle knife switching assembly; 210, connector; 211, large connecting tube; 212, small connecting tube; 213, shoulder; 220, outer tube; 221, wing plate; 222, slide groove; 230, inner needle knife; 231, connecting seat; 232, long handle; 233, coupling shaft; 234, limiting plate; 240, anti-detachment cap; 241, sleeve; 242, anti-detachment ring; 243, connecting rod; 244, through hole. Detailed Implementation

[0029] The present application will now be described in detail with reference to exemplary embodiments shown in the accompanying drawings. However, it should be understood that the present application may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided herein to make the disclosure of the present application more complete and to fully convey the concept of the present application to those skilled in the art.

[0030] In the description of this application, it should be understood that the terms "center", "lateral", "longitudinal", "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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 limiting the scope of protection of this application.

[0031] like Figure 1As shown, the needle knife kit of this application includes a syringe assembly 100 and a connector 210. The syringe assembly 100 includes at least a syringe barrel 110 for containing fluid and allowing the fluid to exit from one end. The needle knife switching assembly 200 includes: a connector 210 that protrudes and communicates with the fluid exit end of the syringe barrel 110; an outer tube 220 that covers the connector 210 at one end and is movable along the axial direction of the connector 210; and an inner needle knife 230 that is disposed within the outer tube 220 with a gap and has a blade at one end. The inner needle knife 230 can expose the blade or retract the blade into the outer tube 220 after the outer tube 220 is moved.

[0032] The syringe assembly 100 can be in the form of an external conduit, or it can use a conventional syringe structure. Specifically, the syringe assembly 100 also includes a plunger 120, which is inserted into one end of the syringe barrel 110 to push fluid out from the other end of the syringe barrel 110. To facilitate control of the volume and injection amount of the internal fluid (generally a cleaning solution or medication), the surface of the syringe barrel 110 is provided with a scale for measuring the volume of the internal fluid.

[0033] In one specific embodiment, reference Figure 2 , 3 4 and 5, the connector 210 is threadedly connected to the outer sleeve 220. More specifically, the connector 210 includes a large connecting sleeve 211 and a small connecting sleeve 212, which are coaxially connected in series with each other and have different diameters, and a shoulder 213 that transitions between the two. The large connecting sleeve 211 is vertically fixedly connected to the syringe 110 and communicates with the interior of the syringe 110. The small connecting sleeve 212 has external threads and is threadedly connected to the inner wall of one end of the outer sleeve 220. The large connecting sleeve 211 is generally located at the center of the end of the syringe 110, and the transition of the shoulder 213 ensures that the entire connector 210 is securely in use.

[0034] In one specific embodiment, reference Figure 2 , 3 4, 6, and 7, the needle knife switching assembly 200 also includes an anti-detachment cap 240. The anti-detachment cap 240 includes a sleeve 241, an anti-detachment ring 242, and a connecting rod 243; the sleeve 241 is sleeved on the end of the connector 210, and both the sleeve 241 and the connector 210 have multiple overlapping through holes 244 on their side walls, with a gap between the sleeve 241 and the outer sleeve 220; both ends of the connecting rod 243 pass through the outer sleeve 220 and are fixedly connected to the side wall of the sleeve 241; the outer edge of the anti-detachment ring 242 is fixedly connected to the inner wall of the end of the sleeve 241 and covers the port of the connector 210.

[0035] The inner needle knife 230 includes a connecting seat 231, a long handle 232, a connecting shaft 233, and a limiting piece 234. The limiting piece 234 is larger than the inner ring of the anti-detachment ring 242 and is rotatably disposed between the anti-detachment ring 242 and the connecting rod 243. One end of the connecting shaft 233 is fixedly connected to the limiting piece 234, and the other end passes through the anti-detachment ring 242 and is fixedly connected to the connecting seat 231. The long handle 232 is arranged along the axial direction of the outer sleeve 220, one end of which is fixedly connected to the connecting seat 231, and the other end is shaped like a blade.

[0036] Using the anti-detachment cap 240 and inner needle blade 230 of this structure, fluid within the syringe assembly 100 can be smoothly injected and flow to the front end of the entire device, whether the inner needle blade 230 is retracted or extended. To facilitate flow, through holes 244 are evenly distributed circumferentially along the sidewall of the sleeve 241.

[0037] Furthermore, while referring to Figure 8 The upper part of the outer tube 220 is provided with a laterally protruding wing plate 221. There are two wing plates 221, symmetrically distributed around the axis of the outer tube 220. The wing plates 221 assist in rotating the outer tube 220, thereby exposing and retracting the blade. Furthermore, the inner wall of the outer tube 220 is provided with two grooves 222 parallel to the axial direction, and the two sides of the long handle 232 are slidably inserted into the two grooves 222 respectively. Thus, due to the restraining effect of the grooves 222, after the outer tube 220 is tightened upwards (towards the rear), the inner needle knife 230 is prevented from easily shaking, and the long handle 232 can rotate synchronously with the outer tube 220. In addition, the wing plates 221 and the blades of the inner needle knife 230 can be arranged parallel to each other, ensuring that medical personnel can know the direction of the blade edge during use, facilitating cutting.

[0038] It should be understood that all the above embodiments are exemplary and not restrictive. Various modifications or variations made by those skilled in the art to the specific embodiments described above under the concept of this application should be within the protection scope of this application.

Claims

1. A needle knife kit, comprising a syringe assembly (100) including a syringe barrel (110) for containing fluid and allowing the fluid to exit from one end, characterized in that, It also includes a needle knife switching component (200), which includes: A connector (210) protrudes and communicates with the fluid discharge end of the syringe (110); The outer sleeve (220) has one end fitted around the connector (210) and is movable along the axial direction of the connector (210); The inner needle knife (230) is located inside the outer tube (220) with a gap and one end is a blade. The inner needle knife (230) can expose the blade after the outer tube (220) moves or retract the blade into the outer tube (220).

2. The needle knife kit according to claim 1, characterized in that: The syringe assembly (100) also includes a plunger (120) inserted into one end of the syringe (110) for pushing fluid out from the other end of the syringe (110).

3. The needle knife kit according to claim 1, characterized in that: The surface of the syringe (110) is provided with a scale for measuring the volume of the fluid inside.

4. The needle knife kit according to claim 1, characterized in that: The connector (210) is threadedly connected to the outer sleeve (220).

5. The needle knife kit according to claim 1, characterized in that: The connector (210) includes a large connecting cylinder (211) and a small connecting cylinder (212) connected in series on coaxially with one large and one small diameter, and a shoulder (213) that transitions between the two. The large connecting cylinder (211) is vertically fixed to the injection cylinder (110) and communicates with the inside of the injection cylinder (110). The small connecting cylinder (212) has an external thread and is threaded to the inner wall of one end of the outer sleeve (220).

6. The needle knife kit according to claim 1, characterized in that: The upper part of the outer sleeve (220) is provided with a laterally protruding wing plate (221).

7. The needle knife kit according to claim 6, characterized in that: The wing plate (221) is provided in two pieces and is symmetrically distributed with the axis of the outer tube (220) as the center.

8. The needle knife kit according to claim 1, characterized in that: The needle knife switching assembly (200) also includes an anti-detachment cap (240), which includes a sleeve (241), an anti-detachment ring (242), and a connecting rod (243); the sleeve (241) is sleeved on the end of the connector (210), and the side walls of the sleeve (241) and the connector (210) are provided with multiple overlapping through holes (244), and a gap is left between the sleeve (241) and the outer sleeve (220); the two ends of the connecting rod (243) pass through the outer sleeve (220) and are fixedly connected to the side wall of the sleeve (241); the outer edge of the anti-detachment ring (242) is fixedly connected to the inner wall of the end of the sleeve (241) and covers the port of the connector (210); The inner needle knife (230) includes a connecting seat (231), a long handle (232), a connecting shaft (233), and a limiting piece (234); the limiting piece (234) is larger than the inner ring of the anti-detachment ring (242) and is rotatably disposed between the anti-detachment ring (242) and the connecting rod (243); one end of the connecting shaft (233) is fixedly connected to the limiting piece (234), and the other end passes through the anti-detachment ring (242) and is fixedly connected to the connecting seat (231); the long handle (232) is arranged along the axial direction of the outer sleeve (220), one end of which is fixedly connected to the connecting seat (231), and the other end is set in the shape of a blade.

9. The needle knife kit according to claim 8, characterized in that: The through holes (244) are evenly distributed circumferentially along the side wall of the sleeve (241).

10. The needle knife kit according to claim 8, characterized in that: The inner wall of the outer sleeve (220) is provided with two sliding grooves (222) parallel to the axial direction, and the two sides of the long handle (232) are slidably inserted into the two sliding grooves (222).

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