An automatic milling cutter irrigation device for neurosurgery craniotomy

Abstract

The present invention discloses an automatic milling cutter flushing device for neurosurgery craniotomy, which relates to the technical field of medical devices and comprises a handle support and a rotating milling cutter. A cooling device for cooling the milling cutter is arranged at the bottom end of the support, and the cooling device comprises a nozzle support and a nozzle. The nozzle support and the nozzle are slidably connected with the handle support. A plurality of water outlets are distributed in an inner circumferential array of the nozzle support, and the water outlets surround the outer circumferential side of the milling cutter. A first arc groove is arranged on the top surface of the nozzle, and a second arc groove is arranged on the bottom surface of the nozzle support. When the nozzle and the nozzle support are tightly connected, the first arc groove and the second arc groove are combined into an annular cavity for storing water. The coolant is transmitted to the nozzle support by adjusting a micro pump, and is sprinkled on the milling cutter through the water outlet to flush and cool the surface of the milling cutter. The operation is convenient, so that the surgical field of the main surgeon is not affected by the assistant, the workload of the surgeon is reduced, and the operation time is shortened.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to an automatic flushing milling cutter device in neurosurgery craniotomy. Background Art

[0002] The milling cutter equipment currently used in craniotomy is not equipped with a device for automatically spraying flushing fluid. Therefore, during the process of craniotomy and bone flap milling by the surgeon, an assistant must be specially assigned to spray flushing fluid to cool the milling cutter head. The main problem is that the assistant's spraying of flushing fluid will affect the surgeon's surgical field of view and affect the surgeon's operation. Summary of the invention

[0003] In view of the deficiencies of the prior art, the object of the present invention is to provide an automatic irrigation milling cutter device in neurosurgery craniotomy to solve the problems raised in the above-mentioned background technology.

[0004] The object of the present invention can be achieved by the following technical scheme: an automatic milling cutter flushing device in neurosurgery craniotomy, comprising a handle support and a rotating milling cutter, the milling cutter is movably connected to the handle support, and a cooling device for cooling the milling cutter is provided at the bottom end of the handle support;

[0005] The cooling device comprises a nozzle support and a nozzle, the nozzle support and the nozzle are detachably connected, the nozzle support and the nozzle are both slidably connected to the handle support, the nozzle support is coaxial with the milling cutter and is arranged on the outside of the milling cutter, a plurality of water outlet holes are distributed in an array on the inner circumference of the nozzle support, and the water outlet holes surround the outer circumference of the milling cutter;

[0006] A first arc groove is provided on the top surface of the nozzle, and a second arc groove is provided on the bottom surface of the support on the nozzle. When the nozzle and the support on the nozzle are tightly connected, the first arc groove and the second arc groove are combined into an annular cavity for storing water. A water injection port is provided on the second arc groove, which penetrates to the top surface of the support on the nozzle.

[0007] As a further solution of the present invention, an L-shaped plate is provided under the milling cutter, the L-shaped plate is L-shaped, the distance between the top surface of the horizontal plate of the L-shaped plate and the bottom end of the milling cutter is not less than 2 mm, and the top end of the vertical plate of the L-shaped plate is fixedly connected to the handle support by bolts.

[0008] As a further solution of the present invention, the support on the nozzle is threadedly connected to the nozzle, and a sealing gasket is provided between the support on the nozzle and the nozzle.

[0009] As a further solution of the present invention, connecting rods are symmetrically distributed on the top of the support on the nozzle, and a circular groove for accommodating the connecting rod is opened on the bottom end surface of the handle support, and the connecting rod is slidably connected to the circular groove.

[0010] As a further solution of the present invention, a plurality of limiting holes are formed on the connecting rod, and a slidable limiting pin which cooperates with the limiting holes for limiting and fixing is provided on the handle support, and the limiting pin is connected with the limiting hole with a transition gap.

[0011] As a further solution of the present invention, the annular limit block is formed by splicing a first semicircular ring and a second semicircular ring, the first semicircular ring is radially provided with a pin hole that can accommodate a limit pin, the limit pin is slidably connected to the pin hole, the limit pin is provided with a spring at the end away from the handle support, the spring is provided with a screw plug at the end away from the limit pin, and the screw plug is threadedly connected to the pin hole.

[0012] As a further solution of the present invention, a first annular groove for accommodating an annular limit block is radially opened on the outer circumferential surface of the handle support near the bottom end, and a circular hole for accommodating a limit pin is radially opened in the first annular groove, and the circular hole penetrates into the circular groove opened on the bottom surface of the handle support.

[0013] As a further solution of the present invention, one end of the first semicircular ring and the second semicircular ring are hinged, the other end of the first semicircular ring is provided with a clamp, and the other end of the second semicircular ring is provided with a groove that can accommodate the clamp, that is, the other ends of the first semicircular ring and the second semicircular ring are clamped by the clamp.

[0014] The beneficial effects of the invention are as follows: the invention can continuously flush the milling cutter head during surgery, so that the surgeon's surgical field of view is not affected by the assistant, reducing the surgeon's workload, shortening the operation time, and reducing intraoperative infection. The invention has a simple structure, low cost, and is easy and reliable to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a partial structural schematic diagram of the present invention;

[0018] Figure 3 is a cross-sectional view of the spraying portion of the present invention;

[0019] Figure 4 It is a schematic diagram of the structure of the nozzle of the present invention;

[0020] Figure 5 is a schematic structural diagram of a first limiting ring of the present invention;

[0021] Figure 6 is a cross-sectional view of the handle support of the present invention;

[0022] In the figure: trachea-1, infusion tube-2, limiting belt-3, handle support-4, placement groove-41, circular groove-42, first annular groove-43, circular hole-44, second annular groove-45, annular limiting block-5, annular fixing seat-6, nozzle support-7, - milling cutter 8, L-shaped plate-9, nozzle-10, bolt-11, screw plug-12, spring-13, limiting pin-14, first semicircular ring-51, clamp-511, pin hole-512, second semicircular ring-52, water injection port-71, connecting rod-72, limiting hole-73, water outlet hole-101, first arc groove-102, second arc groove-103. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figures 1 to 5 In an embodiment of the present invention, an automatic irrigation milling cutter device for neurosurgery craniotomy includes a handle support 4 and a rotating milling cutter 8, wherein the milling cutter 8 is rotatably connected to the handle support 4, and a cooling device for cooling the milling cutter 8 is provided at the bottom end of the handle support 4; the top end of the milling cutter 8 is fixedly connected to the output shaft of the pneumatic drive mechanism installed inside the handle support 4, and the trachea 1 arranged at the top end of the handle support 4 is connected to the air source, that is, the milling cutter 8 is driven to rotate by the air source to perform milling and cutting. Compared with the power supply drive, the air source drive has a small drive mechanism, thereby reducing the overall weight of the handle support 4, making it light and convenient for doctors to hold and operate.

[0025] The cooling device includes a nozzle support 7 and a nozzle 10, wherein the nozzle support 7 and the nozzle 10 are detachably connected, and both the nozzle support 7 and the nozzle 10 are slidably connected to the handle support 4, and the nozzle support 7 is coaxial with the milling cutter 8 and is arranged on the outside of the milling cutter 8. A plurality of water outlet holes 101 are distributed in an inner circumferential array of the nozzle support 7, and the water outlet holes 101 surround the outer circumferential side of the milling cutter 8. The coolant is sprayed on the surface of the milling cutter 8 through the water outlet holes 101, thereby cooling the working milling cutter 8. Compared with the existing method of flushing the milling cutter 8 through a manual handheld catheter, the flushing device disclosed in the present invention has a good cooling effect, and can fully cover the outer circumference of the milling cutter 8 for watering and cooling, and has a good cooling effect and fast cooling, and at the same time will not interfere with the doctor's operation, thereby ensuring the safety and convenience of the surgical operation.

[0026] A first arc groove 102 is provided on the top surface of the nozzle 10, and a second arc groove 103 is provided on the bottom surface of the support 7 on the nozzle. When the nozzle 10 and the support 7 on the nozzle are tightly connected, the first arc groove 102 and the second arc groove 103 are combined into an annular cavity for storing water. A water injection port 71 is provided on the infusion tube 2, which penetrates to the top surface of the support 7 on the nozzle. The top of the water injection port 71 is connected to the infusion tube 2, and the other end of the infusion tube 2 is connected to a micro pump. The coolant is transmitted by the micro pump to the annular cavity formed by the first arc groove 102 and the second arc groove 103, and then evenly distributed to the water outlet 101, and sandblasted onto the milling cutter 8 through the water outlet 101 to cool the milling cutter 8.

[0027] Preferably, in order to prevent the milling cutter 8 from hitting the brain on the inside of the skull during operation, in some embodiments, an L-shaped plate 9 is provided under the milling cutter 8. The L-shaped plate 9 is L-shaped, and the distance between the top surface of the horizontal plate of the L-shaped plate 9 and the bottom end of the milling cutter 8 is not less than 2 mm. The top end of the vertical plate of the L-shaped plate 9 is fixedly connected to the handle support 4 by bolts 11. When in use, the L-shaped plate 9 is hooked onto the inside of the skull, that is, the handle support 4 is pulled up and moved according to the specified shape path to achieve skull cutting. It has a limiting effect, is easy to operate, and reduces the safety risk of operation.

[0028] like Figure 2 As shown, the support 7 and the nozzle 10 on the nozzle are connected by threads, and a sealing gasket is provided between the support 7 and the nozzle 10 on the nozzle, which is not only convenient for installation and disassembly, but also convenient for processing and manufacturing. The sealing gasket improves the sealing performance of the connection between the support 7 and the nozzle 10 on the nozzle, preventing the coolant from splashing and affecting the operation.

[0029] like Figure 2 and 3 As shown, connecting rods 72 are symmetrically distributed on the top of the support 7 on the nozzle, and a circular groove 42 for accommodating the connecting rod 72 is opened on the bottom end surface of the handle support 4. The connecting rod 72 is slidably connected to the circular groove 42. The support 7 on the nozzle is slidably connected to the handle support 4 through the connecting rod 72. The position of the support 7 on the nozzle relative to the milling cutter 8 can be flexibly adjusted. It is practical and flexible, and easy to install and disassemble.

[0030] In some embodiments, Figure 3 As shown, a plurality of limiting holes 73 are provided on the connecting rod 72, and a slidable limiting pin 14 is provided on the handle support 4 for limiting and fixing with the limiting hole 73. The limiting pin 14 is connected with the limiting hole 73 with a transition gap, that is, the support 7 on the nozzle is fixed by the limiting pin 14 and the limiting hole 73. That is, after adjusting the position of the support 7 on the nozzle, the corresponding limiting hole 73 on the support 7 on the nozzle is aligned with the limiting pin 14, and the limiting pin 14 is inserted into the limiting hole 73 to realize the relative fixation of the support 7 on the nozzle.

[0031] In some embodiments, the annular stopper 5 is formed by splicing a first semicircular ring 51 and a second semicircular ring 52. Figure 5 As shown, the first semicircular ring 51 and the second semicircular ring 52 are radially provided with a pin hole 512 for accommodating the limit pin 14, the limit pin 14 is slidably connected to the pin hole 512, and a spring 13 is provided at the end of the limit pin 14 away from the handle support 4, and a screw plug 12 is provided at the end of the spring 13 away from the limit pin 14, and the screw plug 12 is threadedly connected to the pin hole 512. When the position of the support 7 on the nozzle needs to be adjusted, the annular limit block 5 is rotated to make the limit pin 14 disengage from the limit hole 73. At this time, the spring 13 is in a compressed state, and the connecting rod 72 is moved to adjust the position. After the position adjustment is completed, the annular limit block 5 is rotated to make the limit pin 14 align with the limit hole 73 on the support 7 on the nozzle. Under the elastic force of the spring 13, the limit pin 14 is pushed to insert into the limit hole 73 to limit and fix the support 7 on the nozzle. The screw plug 12 is threadedly connected to the first semicircular ring 51 for easy installation and disassembly.

[0032] Preferably, if Figure 6 As shown, a first annular groove 43 for accommodating the annular limit block 5 is radially opened on the outer circumferential surface of the handle support 4 near the bottom end, and a circular hole 44 for accommodating the limit pin 14 is radially opened in the first annular groove 43. The circular hole 44 penetrates into the circular groove 42 opened on the bottom surface of the handle support 4, that is, the annular limit block 5 rotates along the first annular groove 43, is not easy to fall off, and is convenient to grasp.

[0033] Preferably, if Figure 2 and 5 As shown, one end of the first semicircular ring 51 and the second semicircular ring 52 are hinged, the other end of the first semicircular ring 51 is provided with a clamping head 511, and the other end of the second semicircular ring 52 is provided with a groove that can accommodate the clamping head 511, that is, the other ends of the first semicircular ring 51 and the second semicircular ring 52 are clamped by the clamping head 511. When disassembling, the clamping head 511 is pressed beyond the protrusion on the outside of the annular limit block 5, so that the clamping head 511 is disengaged from the groove at the other end of the second semicircular ring 52, thereby separating the first semicircular ring 51 and the second semicircular ring 52, which is easy to operate and convenient to install and disassemble.

[0034] A second annular groove 45 is provided on the outer circumferential surface of the upper end of the handle support 4, and a limiting belt 3 is provided in the second annular groove 45 for fixing the infusion tube 2 placed in the placement groove 41. The limiting belts 3 and the annular limiting blocks 5 arranged above and below the handle support 4 fix the infusion tube 2 in the handle support 4 so that it is not easy to fall out, thereby preventing the infusion tube 2 from moving around and making it inconvenient to operate the handle support 4.

[0035] The working principle of the present invention is: when performing an operation, by connecting the air source, the air enters into the handle support 4 through the trachea 1, driving the air source driving device to rotate, thereby driving the milling cutter 8 to rotate to perform skull cutting. When in use, pull it upward so that the plane on the horizontal plate of the L-shaped plate 9 fits with the inner top surface of the skull to prevent the milling cutter 8 from accidentally injuring the brain tissue. Start the micro pump to transfer the coolant through the infusion tube 2 to the support 7 and the nozzle 10 on the nozzle, and then spray it on the milling cutter 8 through the water outlet 101 to continuously cool the milling cutter 8.

[0036] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed or operate in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of the present invention, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0038] For those skilled in the art, it is understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. Therefore, from any point of view, the embodiments should be regarded as instructive and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. It is only a preferred embodiment of the present invention and is not intended to limit the present invention. All modifications, equivalent substitutions, improvements, etc. within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An automatic milling cutter irrigation device for neurosurgery craniotomy, comprising a handle support (4) and a rotating milling cutter (8), wherein the milling cutter (8) is movably connected to the handle support (4), and is characterized in that: A cooling device for cooling the milling cutter (8) is provided at the bottom end of the handle support (4); The cooling device comprises a nozzle support (7) and a nozzle (10), wherein the nozzle support (7) and the nozzle (10) are detachably connected, the nozzle support (7) and the milling cutter (8) are both slidably connected to the handle support (4), the nozzle support (7) is coaxial with the milling cutter (8) and is arranged on the outside of the milling cutter (8), and a plurality of water outlet holes (101) are distributed in an array on the inner circumference of the nozzle support (7), and the water outlet holes (101) surround the outer circumference of the milling cutter (8); The top surface of the nozzle (10) is provided with a first arc-shaped groove (102), and the bottom surface of the support (7) on the nozzle is provided with a second arc-shaped groove (103); when the nozzle (10) and the support (7) on the nozzle are tightly connected, the first arc-shaped groove (102) and the second arc-shaped groove (103) are combined into an annular cavity for storing water, and the second arc-shaped groove (103) is provided with a water injection port (71) which penetrates to the top surface of the support (7) on the nozzle; An L-shaped plate (9) is provided below the milling cutter (8), the L-shaped plate (9) is L-shaped, the distance between the top surface of the horizontal plate of the L-shaped plate (9) and the bottom end of the milling cutter (8) is not less than 2 mm, and the top end of the vertical plate of the L-shaped plate (9) is fixedly connected to the handle support (4) by bolts (11); The top of the nozzle support (7) is symmetrically provided with connecting rods (72), the bottom end surface of the handle support (4) is provided with a circular groove (42) for accommodating the connecting rod (72), and the connecting rod (72) is slidably connected to the circular groove (42); The connecting rod (72) is provided with a plurality of limiting holes (73), the handle support (4) is provided with a slidable limiting pin (14) which cooperates with the limiting hole (73) to limit and fix, and the limiting pin (14) is connected with the limiting hole (73) with a transition gap. The annular limit block (5) is formed by splicing a first semicircular ring (51) and a second semicircular ring (52); a pin hole (512) for accommodating a limit pin (14) is radially opened on the first semicircular ring (51); the limit pin (14) is slidably connected to the pin hole (512); a spring (13) is provided at the end of the limit pin (14) away from the handle support (4); a screw plug (12) is provided at the end of the spring (13) away from the limit pin (14); and the screw plug (12) is threadedly connected to the pin hole (512); A first annular groove (43) for accommodating an annular limiting block (5) is radially formed on the outer circumferential surface of the handle support (4) near the bottom end, and a circular hole (44) for accommodating a limiting pin (14) is radially formed in the first annular groove (43), and the circular hole (44) penetrates into a circular groove (42) formed on the bottom surface of the handle support (4).

2. The automatic milling cutter irrigation device for neurosurgery craniotomy according to claim 1, characterized in that: The nozzle support (7) and the nozzle (10) are threadedly connected, and a sealing gasket is provided between the nozzle support (7) and the nozzle (10).

3. The automatic milling cutter irrigation device for neurosurgery craniotomy according to claim 1, characterized in that: One end of the first semicircular ring (51) and the second semicircular ring (52) are hinged, the other end of the first semicircular ring (51) is provided with a clamping head (511), and the other end of the second semicircular ring (52) is provided with a groove capable of accommodating the clamping head (511), that is, the other ends of the first semicircular ring (51) and the second semicircular ring (52) are clamped together via the clamping head (511).

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