Multifunctional suction tube for neurosurgery microsurgery

Abstract

The invention discloses a multifunctional suction tube for neurosurgery microsurgery, and relates to the technical field of medical instruments, the multifunctional suction tube comprises a suction tube body, a handle and a negative pressure interface, and a suction cavity channel is formed in the suction tube body; a negative pressure control port communicated with the suction cavity channel is formed in the handle; the device further comprises a flushing pipe and a traction mechanism. The flushing pipe is sleeved outside the suction pipe body, a flushing cavity channel is formed between the flushing pipe and the suction pipe body, and the far end of the flushing pipe is arranged at the far end of the suction pipe body, so that the suction head extends out of the far end of the flushing pipe. The traction mechanism comprises a traction column hinged to the suction head, a torsion spring is arranged at the hinged position, and the torsion spring enables the traction column to extend towards the near end in the natural state and be attached to the outer side of the far end of the flushing pipe. The device integrates the functions of suction, flushing and tissue traction, is convenient to operate, can reduce the dependence on an assistant in an operation, and improves the operation efficiency and quality.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a multifunctional suction tube for neurosurgical microsurgery. Background Technology

[0002] During neurosurgical procedures such as intracranial tumor resection, vascular anastomosis, and intramedullary tumor resection, it is necessary to promptly remove accumulated blood, exudate, and irrigation fluid from the surgical field to maintain a clear surgical field.

[0003] Currently, clinically used microsurgical aspirators are typically single-function, primarily providing suction. During surgery, the surgeon often requires an assistant to perform procedures such as irrigation, tissue traction, or vascular dissection. In the confined surgical area, multiple surgeons working together can easily interfere with each other, increasing surgical risks. Furthermore, existing suction tubes usually have a single-lumen structure, making simultaneous irrigation and suction impossible; their smooth outer walls make it difficult to effectively pull on small blood vessels or nerves, often requiring the use of specialized instruments for traction, increasing the number of times instruments need to enter and exit the surgical area, and impacting surgical efficiency.

[0004] Therefore, there is an urgent need for a neurosurgical microsurgical suction tube that integrates multiple functions such as suction, irrigation, and tissue traction, is easy to operate, and is safe and reliable. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a multifunctional suction tube for neurosurgical microsurgery that can both attract and rinse, and has tissue traction function.

[0006] To solve the above-mentioned technical problems, the present invention provides a multifunctional suction tube for neurosurgical microsurgery, comprising a suction tube body, a handle, and a negative pressure interface, wherein a suction cavity is formed inside the suction tube body; the handle is provided with a negative pressure control port communicating with the suction cavity; and further comprising: A flushing tube is sleeved on the outside of the suction tube body, forming a flushing cavity between them. The distal end of the flushing tube is positioned at the distal end of the suction tube body, such that the suction head located at the distal end of the suction tube body extends a certain distance beyond the distal end of the flushing tube. A connecting protrusion is provided at the proximal end of the flushing tube. Symmetrically arranged on the connecting protrusion are connecting posts that extend proximally and are slidably connected to the bottom of the handle housing. Each connecting post is connected to a traction button located on the handle via a triangular block inside the handle. The traction mechanism includes a traction column hinged to the suction head, and a torsion spring is provided at the hinge point between the traction column and the suction head. The torsion spring is used to allow the traction column to extend proximally and fit against the outer side of the distal end of the flushing tube in its natural state. The handle is also equipped with a flushing control valve that communicates with the flushing chamber.

[0007] In some embodiments of the present invention, the portion of the traction button located inside the handle is a sloping triangular body, the sloping surface of which slides against the sloping surface of the triangular block, the bottom of the triangular block is fixedly connected to the connecting post, and a return spring is provided between the bottom surface of the triangular block and the bottom surface of the inner cavity of the handle.

[0008] In some embodiments of the present invention, a limit ring is provided on the traction button to prevent the traction button from disengaging from the handle.

[0009] In some embodiments of the present invention, a retractable soft sleeve is provided at the proximal end of the flushing tube, near the handle, with one end of the soft sleeve communicating with the flushing cavity and the other end communicating with the water inlet cavity inside the handle.

[0010] In some embodiments of the present invention, the water inlet chamber is connected to a water inlet interface disposed on the handle, the water inlet interface is used to connect to an external water inlet pipe, and the flushing control valve is used to control the connection between the water inlet pipe and the water inlet chamber.

[0011] In some embodiments of the present invention, the two triangular blocks are isolated from the water inlet chamber as independent sealed chambers within the inner cavity of the handle.

[0012] In some embodiments of the present invention, the suction head is a blunt cylindrical head structure.

[0013] The advantages of this invention compared to the prior art are: By connecting the irrigation tube to the outside of the suction tube to form an irrigation cavity, and hinged the traction column to the suction head, the functions of suction, irrigation, and tissue traction are integrated into one. The surgeon can complete multiple operations with one hand, reducing reliance on assistants, minimizing interference, and improving surgical efficiency and quality. The irrigation tube is driven to move axially by the traction button, which in turn pushes the traction column to open and form a traction angle, making operation and control convenient. The retractable soft sleeve ensures both the axial movement freedom of the irrigation tube and the sealing of the irrigation fluid path. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a multifunctional suction tube for neurosurgical microsurgery according to the present invention. Figure 1 .

[0015] Figure 2 This is a three-dimensional structural diagram of a multifunctional suction tube for neurosurgical microsurgery according to the present invention. Figure 2 .

[0016] Figure 3 yes Figure 1A magnified schematic diagram of the structure at point I in the middle.

[0017] Figure 4 yes Figure 1 A magnified schematic diagram of the structure at point II in the middle section.

[0018] Figure 5 yes Figure 2 A magnified schematic diagram of the structure at point III.

[0019] Figure 6 This is a schematic diagram of the internal three-dimensional structure of a multifunctional suction tube for neurosurgical microsurgery of the present invention when the traction column is not used.

[0020] Figure 7 This is a schematic diagram of the internal three-dimensional structure of a multifunctional suction tube for neurosurgical microsurgery using a traction column according to the present invention.

[0021] As shown in the figure: 1. Suction tube body, 11. Suction cavity; 2. Handle; 21. Negative pressure control port; 22. Flushing control valve; 23. Water inlet chamber; 24. Water inlet pipe; 3. Negative pressure interface; 4. Flushing tube; 41. Flushing cavity; 42. Connecting protrusion; 43. Connecting post; 44. Triangular block; 45. Return spring; 46. Soft sleeve. 5. Suction head; 6. Traction column; 61. Torsion spring; 7. Traction button; 71. Limit ring. Detailed Implementation

[0022] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0023] It should be noted that, in this invention, "distal end" refers to the end furthest from the handle 2, and "proximal end" refers to the end closest to the handle 2.

[0024] like Figures 1 to 7 As shown in the illustration, this embodiment provides a multifunctional suction tube for neurosurgical microsurgery, mainly composed of a suction tube body 1, a handle 2, a negative pressure interface 3, an irrigation tube 4, and a traction mechanism. The suction tube body 1 is made of medical-grade stainless steel or high-strength polymer material, and its diameter is controlled between 1-3 mm to meet the needs of precise operation under a microscope. An suction cavity 11 is formed inside the suction tube body 1 for suctioning blood, cerebrospinal fluid, or tissue debris from the surgical area.

[0025] In some embodiments of the present invention, such as Figure 1 and Figure 2 As shown, the handle 2 is connected to the proximal end of the suction tube 1. The handle 2 has a negative pressure control port 21, which communicates with the suction cavity 11 and is used to connect to an external negative pressure source and control the flow of suction. The handle 2 also has a flushing control valve 22 for controlling the flow of flushing fluid. The end of the handle 2 has a negative pressure interface 3 for connecting to a central negative pressure suction system.

[0026] In some embodiments of the present invention, such as Figure 1 and Figure 3 As shown, the irrigation tube 4 is sleeved on the outside of the suction tube body 1, forming an annular irrigation cavity 41 between the two. The distal end of the irrigation tube 4 is positioned at the distal end of the suction tube body 1, such that the suction head 5 located at the distal end of the suction tube body 1 extends a certain distance from the distal end of the irrigation tube 4. This distance is preferably 2-5 mm, to ensure that the suction head 5 can preferentially contact the surgical area, while leaving space for the spraying of irrigation fluid.

[0027] In some embodiments of the present invention, such as Figure 1 and Figure 3 As shown, the suction head 5 is located at the distal end of the suction tube body 1, and preferably has a blunt cylindrical head structure with a smooth end without sharp edges to prevent damage to brain tissue or blood vessels during suction. The suction head 5 communicates with the suction cavity 11 and is used to aspirate liquids and tissue debris.

[0028] In some embodiments of the present invention, such as Figure 3 As shown, the traction mechanism includes a traction column 6. The traction column 6 is hinged to the suction head 5. Specifically, a hinge seat can be provided at the rear end of the suction head 5, and the root of the traction column 6 is rotatably connected to the hinge seat via a pin. A torsion spring 61 is provided at the hinge point between the traction column 6 and the suction head 5. Figure 6 and Figure 7 As shown, the torsion spring 61 is used to extend the traction column 6 proximally and fit against the distal outer side of the irrigation tube 4 in its natural state. In the non-use state, the traction column 6 fits against the outer wall of the irrigation tube 4 without increasing the lateral dimension of the tube, making it easy to reach deeper into the surgical area; when tissue traction is required, the traction column 6 can be opened at a certain angle by the drive mechanism to form a hook-like structure for hooking or pushing blood vessels, nerves and other tissues.

[0029] In some embodiments of the present invention, such as Figure 1 and Figure 4 As shown, a connecting protrusion 42 is provided at the proximal end of the flushing tube 4. Two connecting posts 43 are symmetrically arranged on the connecting protrusion 42. These two connecting posts 43 extend proximally and are slidably connected to the housing of the handle 2. Each connecting post 43 is connected to a traction button 7 provided on the handle 2 via a triangular block 44 inside the handle 2.

[0030] In some embodiments of the present invention, such as Figure 6 and Figure 7 As shown, the traction button 7 is located on the side of the handle 2 for easy operation. The portion of the traction button 7 inside the handle 2 is a beveled triangle, which slides against the beveled surface of the triangular block 44. The beveled surface of the traction button 7 and the beveled surface of the triangular block 44 cooperate to form a transmission mechanism that converts the lateral movement of the button into the longitudinal movement of the triangular block 44 and the connecting post 43. The bottom of the triangular block 44 is fixedly connected to the connecting post 43, and a return spring 45 is provided between the bottom surface of the triangular block 44 and the bottom surface of the inner cavity of the handle 2. A limit ring 71 is provided on the traction button 7 to prevent the traction button 7 from dislodging from the handle 2.

[0031] When a doctor needs to activate traction, such as Figure 6 and Figure 7 As shown, press both traction buttons 7 simultaneously. The traction buttons 7 are pushed inwards perpendicular to the side of the handle, their inclined surfaces sliding relative to the inclined surfaces of the triangular block 44, pushing the triangular block 44 towards the distal end. The triangular block 44 drives the connecting post 43 to move distally, which in turn drives the connecting protrusion 42 and the entire flushing tube 4 to move distally. Since the distal end of the flushing tube 4 was originally positioned behind the suction head 5, when the flushing tube 4 moves distally, its distal end moves closer to the suction head 5, thus pushing the traction post 6, which was originally attached to the outside of the flushing tube 4, outwards. Under the elastic force of the torsion spring 61, the traction post 6 gradually opens away from the tube body, forming a certain angle with the suction head 5, which can then be used to hook and pull tissue.

[0032] After use, release the traction button 7. Under the action of the reset spring 45, the triangular block 44 and the traction button 7 reset, causing the flushing tube 4 to retract to the proximal end. The traction column 6 is re-erected and adheres to the outside of the flushing tube 4 due to the rebound force of the torsion spring 61, thus achieving reset.

[0033] In some embodiments of the present invention, such as Figure 1 and Figure 4 As shown, to ensure that the flushing chamber 41 remains connected to the water source when the flushing tube 4 moves axially, a retractable flexible sleeve 46 is provided at the proximal end of the flushing tube 4, near the handle 2. One end of the flexible sleeve 46 is connected to the flushing chamber 41, and the other end is connected to the water inlet chamber 23 inside the handle 2. The flexible sleeve 46 is made of a medical polymer material with good elasticity and fatigue resistance, such as silicone rubber or polyurethane, and can expand and contract with the movement of the flushing tube 4, always maintaining a sealed connection of the fluid path.

[0034] In some embodiments of the present invention, such as Figure 6 and Figure 7As shown, the water inlet chamber 23 is connected to the water inlet interface located on the handle 2. The water inlet interface is used to connect to an external water inlet pipe 24, which can be connected to an irrigation pump or syringe. A flushing control valve 22 is located in the flow path between the water inlet chamber 23 and the water inlet interface, used to control the connection between the water inlet pipe 24 and the water inlet chamber 23. When flushing is required, the doctor presses the flushing control valve 22, and the flushing fluid enters the water inlet chamber 23 from the water inlet interface 24, passes through the flexible sleeve 46 into the flushing channel 41, and finally sprays out from the distal end of the flushing pipe 4 to flush the surgical area.

[0035] In some embodiments of the present invention, such as Figure 6 and Figure 7 As shown, to prevent flushing fluid from seeping into the transmission mechanism and affecting operation, the space containing the two triangular blocks 44 and their corresponding return springs 45 in the inner cavity of the handle 2 is isolated from the water inlet chamber 23 into an independent sealed chamber. Physical isolation between the two is achieved through a partition or sealing ring, ensuring that even slight leakage in the water inlet chamber 23 will not affect the normal operation of the triangular blocks 44 and the traction button 7.

[0036] In some embodiments of the present invention, components such as the suction tube 1, the irrigation tube 4, and the handle 2 can be made of medical-grade stainless steel or high-temperature and high-pressure resistant engineering plastics. All surfaces in contact with human tissue must be smoothed to ensure no burrs or sharp edges. The dimensions of each component can be adjusted according to different surgical needs. For example, a thinner and longer tube can be used for deep tumor surgery, while a slightly shorter but more maneuverable tube can be used for superficial vascular anastomosis surgery.

[0037] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A multifunctional suction tube for neurosurgical microsurgery, comprising a suction tube body (1), a handle (2), and a negative pressure port (3), wherein the suction tube body (1) forms a suction cavity (11); the handle (2) is provided with a negative pressure control port (21) communicating with the suction cavity (11); characterized in that, Also includes: A flushing tube (4) is sleeved on the outside of the suction tube body (1), forming a flushing cavity (41) between the two. The distal end of the flushing tube (4) is placed at the distal end of the suction tube body (1), so that the suction head (5) located at the distal end of the suction tube body (1) extends a distance beyond the distal end of the flushing tube (4). A connecting protrusion (42) is provided at the proximal end of the flushing tube (4). A connecting post (43) is symmetrically arranged on the connecting protrusion (42) extending towards the proximal end and slidingly connected to the bottom of the housing of the handle (2). Each connecting post (43) is connected to a traction button (7) located on the handle (2) through a triangular block (44) inside the handle (2). The traction mechanism includes a traction column (6), which is hinged to the suction head (5), and a torsion spring (61) is provided at the hinge of the traction column (6) and the suction head (5). The torsion spring (61) is used to make the traction column (6) extend proximally in its natural state and fit against the outer side of the distal end of the flushing pipe (4). The handle (2) is also provided with a flushing control valve (22) that communicates with the flushing chamber (41).

2. The multifunctional suction tube for neurosurgical microsurgery according to claim 1, characterized in that, The part of the traction button (7) located inside the handle (2) is a sloping triangle, and its sloping surface slides against the sloping surface of the triangular block (44). The bottom of the triangular block (44) is fixedly connected to the connecting post (43), and a reset spring (45) is provided between the bottom surface of the triangular block (44) and the bottom surface of the inner cavity of the handle (2).

3. The multifunctional suction tube for neurosurgical microsurgery according to claim 2, characterized in that, The traction button (7) is provided with a limit ring (71) to prevent the traction button (7) from coming off the handle (2).

4. The multifunctional suction tube for neurosurgical microsurgery according to claim 1, characterized in that, A retractable soft sleeve (46) is provided at the proximal end of the flushing tube (4) near the handle (2). One end of the soft sleeve (46) is connected to the flushing cavity (41), and the other end is connected to the water inlet cavity (23) inside the handle (2).

5. The multifunctional suction tube for neurosurgical microsurgery according to claim 4, characterized in that, The water inlet chamber (23) is connected to the water inlet interface provided on the handle (2). The water inlet interface is used to connect to the external water inlet pipe (24). The flushing control valve (22) is used to control the connection between the water inlet pipe (24) and the water inlet chamber (23).

6. The multifunctional suction tube for neurosurgical microsurgery according to claim 1, characterized in that, In the inner cavity of the handle (2), the two triangular blocks (44) and the water inlet cavity (23) are isolated into independent sealed chambers.

7. The multifunctional suction tube for neurosurgical microsurgery according to claim 1, characterized in that, The suction head (5) has a blunt cylindrical head structure.

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