Abrasive drill for minimally invasive spine surgery in orthopedics department and operation method of abrasive drill

Abstract

The invention relates to the technical field of orthopedic medical instruments, in particular to an orthopedic spine minimally invasive surgery abrasive drill which comprises a medical electric drill, the drill bit end of the medical electric drill is rotationally connected with an abrasive drill assembly and fixedly connected with a flushing and suction assembly, and the flushing and suction assembly is used for cleaning scrap mixtures generated by abrasive drilling of the abrasive drill assembly. Through the design of the drill-in-drill structure, the drill bits can be switched at will, and therefore the efficiency and effect of the abrasive drill are improved. And the technical effect of flushing, suction and cleaning of the scrap mixture in the grinding and drilling area is achieved through the arrangement that the flushing and suction assembly is matched with spiral conveying, and the technical problems that the visual field is blurred due to scraps generated in the grinding and drilling process, the surgical visual field is seriously affected, and the surgery is disturbed are solved.

Description

Technical Field

[0001] The invention relates to the technical field of orthopedic medical instruments, and in particular to an orthopedic spine minimally invasive surgery grinding drill and an operating method thereof. Background Art

[0002] Minimally invasive surgical techniques have developed rapidly in the past few decades. Minimally invasive spinal surgery is the latest technology in the development of spinal disease diagnosis and treatment. Compared with traditional spinal surgery techniques, minimally invasive spinal techniques have brought about tremendous changes in spinal diagnosis and treatment, including improvements in equipment, development of imaging technology, and understanding of biomechanics, etc., which have had a huge impact on the treatment methods and effects of spinal patients. Minimally invasive spinal surgery is minimally invasive and highly effective, and can reduce postoperative pain, reduce surgical incisions, shorten hospital stays, and reduce medical costs. Therefore, it is favored by spinal surgeons and patients.

[0003] Orthopedic surgeons use surgical drills when performing minimally invasive spinal surgery. Common drills include diamond abrasive drills with densely distributed tiny particles on the surface, which have a uniform and smooth grinding surface, and drills with beveled edges for better cutting effects. When performing drill grinding, different drill bits are selected according to needs. However, in actual use, the drill bit switching is more troublesome, and cannot be adapted to the needs during use. The drill bit status cannot be switched quickly and flexibly, which affects the efficiency and effect of the drill grinding. In addition, during the drilling process, the debris mixture produced will seriously affect the surgical field and interfere with the operation.

[0004] After searching, the Chinese patent application with application number 202211062460.8 discloses an orthopedic spine minimally invasive surgery grinding drill, including a gun rod, a fixing mechanism is provided at one end of the gun rod, a drill rod is movably connected to the fixing mechanism, a grinding head is provided at the end of the drill rod, a battery is provided inside the gun rod, a heat dissipation mechanism is provided at the other end of the gun rod, a motor for driving the fixing mechanism to rotate is installed in the gun rod, the fixing mechanism includes a rotating sleeve rotatably installed at one end of the gun rod, a sliding cylinder is provided on the inner side of the rotating sleeve and located outside the gun rod, and a first spring is evenly distributed between the side wall of the sliding cylinder and the rotating sleeve. The present invention limits the arc boss and the outer diameter of the drill rod through the fixing mechanism, and then drives the rotating sleeve, the sliding cylinder, the wedge block, and the drill rod to rotate as a whole through the operation of the motor, thereby improving the convenience of replacing the drill rod and the stability of the fixation, and ensuring the use effect.

[0005] Although the above-mentioned surgical drill can realize the replacement of the drill rod, it cannot achieve the purpose of fast, flexible and arbitrary switching of the drill bit during the operation, which affects the efficiency and effect of the drill. In addition, during the drilling process, the debris mixture produced will cause blurred vision, seriously affect the surgical field, and interfere with the operation. Summary of the invention

[0006] The above-mentioned prior art is aimed at the technical problems that the drill bit cannot be quickly, flexibly and arbitrarily switched during surgery, which affects the efficiency and effect of drilling. In addition, the debris mixture generated during the drilling process will cause blurred vision, seriously affect the surgical field, and interfere with the operation.

[0007] Technical idea: Starting from the problems of the prior art, this application provides an orthopedic spine minimally invasive surgery grinding drill, which realizes arbitrary switching of the drill bit through the setting of the drill in the drill, and realizes the flushing and suction cleaning of the debris mixture in the grinding area through the spiral conveying of the flushing component and the suction component, thereby avoiding the problem of the debris mixture generated during the grinding process affecting the surgical field of view.

[0008] To achieve the above object, the technical solution adopted by the present invention is: The present application provides an orthopedic spinal minimally invasive surgery grinding drill, comprising a medical electric drill, the head end of which is rotatably connected to a grinding drill assembly and fixedly connected to a flushing and suction assembly, wherein the flushing and suction assembly is used to clean the debris mixture generated by the grinding drill assembly.

[0009] Further, the drill grinding assembly includes a threaded hollow drill rod, a diamond drill bit, a drilling inner rod and a bevel-edged drill bit; The diamond drill bit is fixedly connected to the head end of the threaded hollow drill rod, and the bevel-edged drill bit is fixedly connected to the head end of the drilling inner rod; The inner drilling rod is movably connected in the threaded hollow drill rod, and the oblique-edge drill bit is embedded with the diamond drill bit.

[0010] Specifically, a continuously rotating thread is arranged on the outer side of the threaded hollow drill rod, tiny particles are densely distributed on the surface of the diamond drill bit, the grinding surface is uniform and smooth, and a plurality of inclined blades are distributed on the bevel-edged drill bit, so the cutting efficiency is higher.

[0011] It should be noted that a cavity for installing an oblique-edged drill bit is provided through the center of the diamond drill bit, and the oblique-edged drill bit can move back and forth inside the diamond drill bit.

[0012] Furthermore, the grinding drill assembly also includes an adjusting nut, a spring, an adjusting slot and an adjusting block; The adjusting nut is connected to the outside of the threaded hollow drill rod through threads; One end of the spring is fixedly connected to the threaded hollow drill rod, and the other end is fixedly connected to the drilling inner rod; An adjusting groove is formed through the side wall of the threaded hollow drill rod, and an adjusting block is movably arranged in the adjusting groove. The head end of the adjusting block is fixedly connected to the drilling inner rod, and the side end is in contact with the adjusting nut.

[0013] It should be noted that, in the initial state, the spring is in a compressed state, and the adjustment block can move forward and backward in the adjustment slot.

[0014] In the above technical solution, a flusher and a negative pressure suction device are respectively connected to both sides of the flushing and suction assembly.

[0015] Further, the flushing and suction assembly includes a fixing frame and an outer sleeve; One end of the fixing frame is fixedly connected to the medical electric drill, and the other end is fixedly connected to the outer sleeve; A threaded hollow drill rod is sleeved inside the outer sleeve, a flushing pipe is arranged on one side of the outer sleeve, and a suction pipe is arranged on the other side; A plurality of oblique flow openings are provided at the connection between the flushing pipe and the outer sleeve, and the oblique flow openings allow the flushing pipe and the outer sleeve to be connected through and through.

[0016] Specifically, the fixing frame includes three fixing rods and a fixing disc, and the fixing disc is rotatably connected to the threaded hollow drill rod.

[0017] In detail, the flusher is connected to the flushing tube, and the negative pressure aspirator is connected to the suction tube.

[0018] In particular, the oblique flow port is arranged to be inclined in an upward direction from the flushing pipe to the outer sleeve, so that the water flow impacts obliquely upward, which helps to promote the negative pressure suction device to suck and clean the debris mixture in the outer sleeve upward.

[0019] An operating method for a minimally invasive spinal surgery grinding drill in orthopedics, comprising the following steps: S1: Start the medical electric drill to drive the diamond drill bit to grind the spinal area; S2: During the grinding process, the grinding and drilling area is flushed through the flushing pipe and the debris mixture is sucked and cleaned through the suction pipe; S3: By adjusting the cooperation between the nut and the spring, the bevel-edged drill bit is moved forward to realize drill bit switching.

[0020] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention realizes the arbitrary switching of drill bits through the design of the drill-in-drill structure, and realizes the technical effect of flushing, suction and cleaning of the debris mixture in the grinding and drilling area through the setting of the flushing and suction assembly in conjunction with the spiral conveyor, thereby avoiding the technical problem that the debris mixture generated during the grinding and drilling process affects the surgical field of view.

[0021] 2. The present invention arranges a diamond drill bit in the outer ring, and an oblique-edge drill bit is embedded in the inner core. The oblique-edge drill bit can slide in the diamond drill bit, and the adjustment nut is moved in the direction of the diamond drill bit, so that the elastic force of the spring pushes the oblique-edge drill bit to protrude from the diamond drill bit, thereby increasing the drilling amount and improving the drilling efficiency. The spring will give the oblique-edge drill bit a certain elastic margin and buffer, reducing the adverse effects caused by the hard contact between the oblique-edge drill bit and the bone.

[0022] 3. In the process of spinal drilling, the present invention uses the drill bit to transport the debris mixture through the spiral on the spiral hollow drill rod to the gap formed between the outer sleeve and the spiral hollow drill rod, and further uses the oblique flow port set on the flushing tube to make the water flow obliquely upward, further promoting the negative pressure suction device to suck and clean the sucked debris mixture upward, thereby enhancing the effect of timely sucking and cleaning the small bone particles and liquid mixture generated by grinding, making the surgical field clearer and reducing interference with the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention; Figure 2 This is a three-dimensional diagram of the drill bit switching state of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of part A in the middle; Figure 4 For the present invention Figure 2 Enlarged view of middle part B; Figure 5 For the present invention Figure 1 center left view; Figure 6 For the present invention Figure 5 Section view in the AA direction; Figure 7 For the present invention Figure 6 Enlarged view of middle C; Figure 8 For the present invention Figure 6 Enlarged view of the middle D part; Fig. 9 A three-dimensional diagram of the external structure of the drill grinding assembly of the present invention; Fig.10 For the present invention Fig. 9 Enlarged view of middle E part; Fig.11 For the present invention Fig. 9 Enlarged view of middle F part; Fig.12 A three-dimensional diagram of the internal structure of the drill grinding assembly of the present invention; Fig.13 For the present invention Fig.12 Enlarged view of the middle G section; Fig.14 For the present invention Fig.12 Enlarged view of middle H section; In the figure: 1. medical electric drill; 2. grinding drill assembly; 21. threaded hollow drill rod; 22. diamond drill bit; 23. drilling inner rod; 24. oblique blade drill bit; 25. adjusting nut; 26. spring; 27. adjusting slot; 28. adjusting block; 3. flushing and suction assembly; 31. fixing frame; 32. outer sleeve; 33. flushing tube; 34. suction tube; 35. oblique flow port. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0026] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "front end", "back end", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0027] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] The inventors have found in clinical practice that during orthopedic minimally invasive spine surgery, it is impossible to quickly and flexibly switch between diamond abrasive drill bits and bevel-edged drill bits, which affects the efficiency and effect of drilling. In addition, during the drilling process, the debris mixture produced will cause blurred vision, seriously affecting the surgical field of view and interfering with the progress of the operation.

[0029] Based on the above findings, the present application provides an orthopedic spinal minimally invasive surgery drill, including a medical electric drill 1, the head end of which is rotatably connected to a drill assembly 2, and fixedly connected to a flushing and suction assembly 3, wherein the flushing and suction assembly 3 is used to clean the debris mixture generated by the drill assembly 2 during drilling.

[0030] Embodiment 1 Reference Figure 1-14 As shown, the present application provides an orthopedic spinal minimally invasive surgery grinding drill, including a medical electric drill 1, the head end of which is rotatably connected to a grinding drill assembly 2, and the grinding drill assembly 2 is used to grind and cut the spinal surgical area.

[0031] It should be noted that the medical electric drill 1 is a prior art, and the inventor has not made any improvements, so the specific structure and working principle will not be described in detail.

[0032] Specifically, the grinding drill assembly 2 includes a threaded hollow drill rod 21, a diamond drill bit 22, a drilling inner rod 23 and a bevel-edged drill bit 24; As an example, the diamond drill bit 22 has densely distributed tiny particles on its surface, and the grinding surface is even and smooth, and the beveled edge drill bit 24 has multiple inclined blades, which has higher cutting efficiency. Different types of drill bits need to be replaced according to different surgical grinding conditions during surgery.

[0033] The diamond drill bit 22 is fixedly connected to the head end of the threaded hollow drill rod 21, and the bevel drill bit 24 is fixedly connected to the head end of the drilling inner rod 23; The drilling inner rod 23 is movably connected to the threaded hollow drill rod 21, and the bevel drill bit 24 is engaged with the diamond drill bit 22. The bevel drill bit 24 can slide in the diamond drill bit 22, thereby realizing the free switching between the bevel drill bit 24 and the diamond drill bit 22.

[0034] More specifically, the grinding drill assembly 2 further includes an adjusting nut 25, a spring 26, an adjusting slot 27 and an adjusting block 28; It should be noted that the adjusting nut 25 is connected to the outside of the threaded hollow drill rod 21 through a thread; a section of thread is provided on the outside of the threaded hollow drill rod 21, and the adjusting nut 25 moves through the thread cooperation. The adjusting nut 25 and the thread can be self-locking and can maintain a stable relative position when not subject to external force.

[0035] One end of the spring 26 is fixedly connected to the threaded hollow drill rod 21, and the other end is fixedly connected to the drilling inner rod 23; in the initial state, the spring 26 is in a compressed state.

[0036] An adjustment slot 27 is formed through the side wall of the threaded hollow drill rod 21 . An adjustment block 28 is movably disposed in the adjustment slot 27 . The head end of the adjustment block 28 is fixedly connected to the drilling inner rod 23 , and the side end thereof abuts against the adjustment nut 25 .

[0037] During the specific process, the adjusting nut 25 is screwed to move the adjusting nut 25 toward the drill bit, thereby releasing the abutment limit on the adjusting block 28. Under the action of the elastic force of the spring 26, the drilling inner rod 23 drives the bevel-edged drill bit 24 forward, thereby making the bevel-edged drill bit 24 protrude from the corundum drill bit 22, thereby realizing the switching between the corundum drill bit 22 and the bevel-edged drill bit 24.

[0038] Embodiment 2 On the basis of Example 1, in order to solve the problem that the debris mixture generated during the drilling process causes blurred vision, seriously affects the surgical field of view, and interferes with the operation, a flushing and suction component 3 is fixedly connected to the head end of the medical electric drill 1, and the flushing and suction component 3 is used to clean the debris mixture generated by the drilling component 2.

[0039] Specifically, the two sides of the flushing and suction assembly 3 are respectively connected to a flusher and a negative pressure suction device.

[0040] It should be noted that the flusher and negative pressure suction device are existing technologies and can achieve high-pressure flushing and negative pressure suction.

[0041] In detail, the irrigation and suction assembly 3 includes a fixing frame 31 and an outer sleeve 32; One end of the fixing frame 31 is fixedly connected to the medical electric drill 1, and the other end is fixedly connected to the outer sleeve 32; The outer sleeve 32 is sleeved with a threaded hollow drill rod 21, a flushing pipe 33 is provided on one side of the outer sleeve 32, and a suction pipe 34 is provided on the other side; A plurality of oblique flow openings 35 are provided at the connection between the flushing pipe 33 and the outer sleeve 32 , and the oblique flow openings 35 allow the flushing pipe 33 and the outer sleeve 32 to be connected through and through.

[0042] In particular, the oblique flow port 35 is inclined upward from the flushing pipe 33 to the outer sleeve 32, so that the water flow impacts obliquely upward, which helps to promote the negative pressure suction device to suck and clean the debris mixture in the outer sleeve 32 upward.

[0043] During the specific process, the debris mixture is transported by the drill bit through the spiral on the spiral hollow drill rod 21 to the gap formed between the outer sleeve 32 and the spiral hollow drill rod 21, and the water flow is further impacted obliquely upward through the oblique flow port 35 set on the flushing tube 33, further promoting the negative pressure suction device to suck and clean the sucked debris mixture upward, thereby enhancing the effect of timely suction and cleaning of small bone particles and liquid mixture generated by grinding, making the surgical field of view clearer and reducing interference with the operation.

[0044] Specific application cases: Minimally invasive surgical techniques have developed rapidly in the past few decades. Minimally invasive spinal surgery is the latest technology in the development of spinal disease diagnosis and treatment. Compared with traditional spinal surgery techniques, minimally invasive spinal techniques have brought about tremendous changes in spinal diagnosis and treatment, including improvements in equipment, development of imaging technology, and understanding of biomechanics, etc., which have had a huge impact on the treatment methods and effects of spinal patients. Minimally invasive spinal surgery is minimally invasive and highly effective, and can reduce postoperative pain, reduce surgical incisions, shorten hospital stays, and reduce medical costs. Therefore, it is favored by spinal surgeons and patients.

[0045] Orthopedic surgeons use surgical drills when performing minimally invasive spinal surgery. Common drills include diamond abrasive drills with densely distributed tiny particles on the surface, which have a uniform and smooth grinding surface, and drills with beveled edges that have a higher cutting effect. When performing drill grinding, different drill bits are selected according to needs. However, in actual use, the drill bit switching is more troublesome, and it cannot adapt to the needs during use. The drill bit status cannot be switched quickly and flexibly, which affects the efficiency and effect of drilling. In addition, during the drilling process, the grinding materials produced will seriously affect the surgical field and interfere with the operation.

[0046] Based on the above problems, the present application provides an orthopedic spine minimally invasive surgery drill. During the specific operation process, the medical electric drill 1 is started to drive the threaded hollow drill rod 21 to rotate, thereby realizing the diamond drill bit 22 to drill the spinal surgical area.

[0047] The debris mixture generated during the grinding and drilling process is transported to the gap formed between the outer sleeve 32 and the spiral hollow drill rod 21 through the spiral on the spiral hollow drill rod 21, and the water flow is further impacted obliquely upward through the oblique flow port 35 set on the flushing tube 33, further promoting the negative pressure suction device to suck and clean the sucked debris mixture upward, thereby enhancing the effect of timely sucking and cleaning the small bone particles and liquid mixture generated by grinding, making the surgical field of view clearer and reducing interference with the operation.

[0048] During the operation, when the drill bit needs to be replaced according to the situation, the adjusting nut 25 is screwed to move the adjusting nut 25 in the direction of the drill bit, thereby releasing the abutment limit on the adjusting block 28, and under the action of the elastic force of the spring 26, the drilling inner rod 23 drives the bevel-edged drill bit 24 forward, thereby making the bevel-edged drill bit 24 protrude from the diamond drill bit 22, thereby realizing the switching between the diamond drill bit 22 and the bevel-edged drill bit 24.

[0049] When it is necessary to switch back to the diamond drill bit 22, manually screw the adjusting nut 25 to move the adjusting nut toward the medical electric drill 1, thereby driving the adjusting block 28 to move in the adjusting slot 27, so that the spring 26 is compressed. At this time, the bevel-edged drill bit 24 retreats and engages in the diamond drill bit 22, thereby realizing arbitrary switching of the drill bit.

[0050] It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A minimally invasive spinal surgery drill for orthopedics, comprising a medical electric drill (1), characterized in that: The head end of the medical electric drill (1) is rotatably connected to a grinding drill assembly (2), and is fixedly connected to a flushing and suction assembly (3), wherein the flushing and suction assembly (3) is used to clean a debris mixture generated by the grinding drill assembly (2).

2. The orthopedic spine minimally invasive surgery drill according to claim 1, characterized in that: The drill grinding assembly (2) comprises a threaded hollow drill rod (21), a diamond drill bit (22), a drilling inner rod (23) and a bevel-edged drill bit (24); The diamond drill bit (22) is fixedly connected to the head end of the threaded hollow drill rod (21), and the bevel-edged drill bit (24) is fixedly connected to the head end of the drilling inner rod (23); The inner drilling rod (23) is movably connected to the threaded hollow drill rod (21), and the oblique-edged drill bit (24) is engaged with the diamond drill bit (22).

3. The orthopedic spine minimally invasive surgery drill according to claim 2, characterized in that: The grinding drill assembly (2) further comprises an adjusting nut (25), a spring (26), an adjusting slot (27) and an adjusting block (28); The adjusting nut (25) is connected to the outside of the threaded hollow drill rod (21) via threads; One end of the spring (26) is fixedly connected to the threaded hollow drill rod (21), and the other end is fixedly connected to the drilling inner rod (23); An adjustment groove (27) is formed through the side wall of the threaded hollow drill rod (21), and an adjustment block (28) is movably arranged in the adjustment groove (27). The head end of the adjustment block (28) is fixedly connected to the drilling inner rod (23), and the side end is in contact with the adjustment nut (25).

4. The orthopedic spine minimally invasive surgery grinding drill according to claim 3, characterized in that: The two sides of the flushing and suction assembly (3) are respectively connected to a flusher and a negative pressure suction device.

5. The orthopedic spine minimally invasive surgery drill according to claim 4, characterized in that: The flushing and suction assembly (3) comprises a fixing frame (31) and an outer sleeve (32); One end of the fixing frame (31) is fixedly connected to the medical electric drill (1), and the other end is fixedly connected to the outer sleeve (32); The outer sleeve (32) is sleeved with a threaded hollow drill rod (21), a flushing pipe (33) is provided on one side of the outer sleeve (32), and a suction pipe (34) is provided on the other side; A plurality of oblique flow openings (35) are provided at the connection between the flushing pipe (33) and the outer sleeve (32), and the oblique flow openings (35) allow the flushing pipe (33) and the outer sleeve (32) to be in communication with each other.

6. The method for operating a burr for minimally invasive orthopedic spine surgery according to claim 5, characterized in that: The following steps are involved: S1: starting the medical electric drill (1) to drive the diamond drill bit (22) to grind the bone; S2: During the grinding process, the grinding and drilling area is flushed through the flushing pipe (33) and the debris mixture is sucked and cleaned through the suction pipe (34); S3: By adjusting the cooperation between the nut (25) and the spring (26), the bevel-edged drill bit (24) is moved forward to realize drill bit switching.

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