Explorable rapid-screwing bone taking device for spine endoscope

Abstract

The probing and fast-screwing bone taking device for the spine endoscope comprises a positioning sleeve, an external trephine and the endoscope which are sequentially arranged in a sleeved mode from outside to inside, and the lower end of the positioning sleeve is provided with a sharp edge extending downwards; a circle of blunt teeth are arranged at the lower end of the extra-mirror trephine, a section of bone taking threads are arranged on the inner wall of the lower end of the extra-mirror trephine, two opposite probing windows are formed in the outer wall of the lower portion of the extra-mirror trephine, a half circle of probing ring is buckled outside each probing window, a first permanent magnet and a signal transmitter are embedded in the inner wall of one probing ring, and a second permanent magnet and a signal transmitter are embedded in the inner wall of the other probing ring. A first permanent magnet and a signal receiver are embedded in the inner wall of one probing ring, a second permanent magnet and a signal receiver are embedded in the inner wall of the other probing ring, the first permanent magnet and the second permanent magnet attract each other under the action of magnetic field attraction force, and signals emitted by the signal emitter can be received by the signal receiver and transmitted to an external controller. The bone cutter not only can cut the upper articular process ventral bone, but also can easily take out the bone, and prevents excessive formation in an operation.

Description

Technical Field

[0001] The utility model relates to the technical field of orthopedic medical instruments, in particular to a bone-taking device capable of being explored and quickly tightened for spinal endoscopy. Background Art

[0002] The biggest problem with FEFLD surgery at present is that the use of an endoscopic ring saw alone can only cut the ventral bone of the superior articular process. When the ventral bone is cut loose, it is often impossible to remove it with the ring saw due to the remaining ligament connection. At this time, the surgeon is caught in a "dilemma". If the use of the ring saw is abandoned, the loose bone structure cannot be removed in one piece using endoscopic instruments due to its large volume; if the ring saw is continued to be rotated to try to cut the ligament connection, it is very likely to damage the nerve roots in the spinal canal and cause serious neurological complications. In addition, due to the obstruction of the endoscopic ring saw, the surrounding structures of the ring saw cannot be identified during the visualization of the articular process shaping, which can easily lead to serious consequences such as "overshaping". Therefore, the currently used endoscopic ring saw cannot meet the requirements of fully visualized spinal endoscopic surgery, and it is very necessary to improve it.

[0003] In Chinese utility model patent CN200720025137.8, a novel anterior cervical decompression trephine is disclosed, wherein the trephine is provided with an external thread, a cutting depth observation window is provided at the middle and lower part of the side wall of the trephine, the teeth are evenly distributed on the 360° circumference of the bottom port of the trephine, a trephine sleeve is provided outside the trephine, the trephine sleeve is hollow, and an internal thread is provided on the inner wall, which cooperates with the external thread of the trephine, and can solve the problems of difficulty in vertebral resection and many complications during anterior cervical decompression. However, the setting of the observation window requires repeated exploration by the doctor during the operation, which is prone to errors. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a spinal endoscope explorable and fast-tightening bone-taking device, which can not only cut the ventral bone of the superior articular process, but also easily take out the bone and prevent excessive shaping during the operation.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A device for bone removal with exploration and quick tightening for spinal endoscope comprises a positioning sleeve, an external ring saw and an endoscope which are sequentially sleeved from outside to inside, and is characterized in that: the lower end of the positioning sleeve has a downwardly extending sharp blade; the lower end of the external ring saw has a circle of blunt teeth, the inner wall of the lower end of the external ring saw has a section of bone removal thread, two exploration windows are provided on the outer wall below the external ring saw, the two exploration windows are arranged radially opposite to each other, each exploration window is arranged along the length direction, and a half circle of exploration ring is buckled outside each exploration window, a first permanent magnet and a signal transmitter are embedded on the inner wall of one exploration ring, a second permanent magnet and a signal receiver are embedded on the inner wall of the other exploration ring, the first permanent magnet and the second permanent magnet attract each other under the action of magnetic field attraction, the signal sent by the signal transmitter can be received by the signal receiver, and transmitted to an external controller via the signal receiver.

[0007] A further technical solution is that: the outer wall below the mirror outer ring saw has a section of annular recessed area, the detection window is arranged in the recessed area, and the detection ring does not protrude from the outer surface of the mirror outer ring saw after installation;

[0008] The outer wall of the mirror outer ring saw is threadedly connected to the positioning sleeve.

[0009] A further technical solution is that the arc corresponding to the sharp blade is no greater than 180°, and the length of the sharp blade is 3-5 mm.

[0010] A further technical solution is that: the recessed area is provided with circumferential anti-skid patterns, the inner wall of the detection ring is provided with at least one positioning groove cooperating with the anti-skid patterns, and the anti-skid patterns can be embedded in the positioning groove.

[0011] A further technical solution is that: one side of the detection window has a scale line showing the distance from the bottom end of the mirror outer ring saw.

[0012] The beneficial effects of adopting the above technical solution are:

[0013] The spinal endoscope is equipped with an explorable and fast-tightening bone-removing device. The sharp blade at the lower end of the positioning sleeve is used to insert the positioning sleeve into the bone layer to achieve targeted positioning, provide a stable channel for the external ring saw, prevent the external ring saw from slipping during cutting, and reduce the risk of nerve damage.

[0014] Two opposing exploration windows are provided on the outer wall below the endoscopic ring saw, and a signal generator and a signal receiver are arranged between the two exploration windows. In normal operation, the signal emitted by the signal generator can be received by the signal receiver. Once the signal emitted by the signal generator cannot be received by the signal receiver, the cutting is completed and the cutting depth is within the allowable limit. No deeper cutting is required, thereby reducing the risk of damaging the nerve roots and dura mater sac in the spinal canal. At the same time, it also avoids repeated exploration by the doctor during the operation, thereby improving the efficiency of the operation.

[0015] A bone-removing thread is provided on the inner wall of the endoscopic ring saw. During the process of cutting the spinal vertebral body in a ring, the thread teeth of the bone-removing thread form a thread groove that cooperates with the cut spinal vertebral body block on the outside of the cut spinal vertebral body block, so that the cut spinal vertebral body is fixed in the inner cavity of the endoscopic ring saw. After the endoscopic ring saw completes the cutting of the spinal vertebral body and is pulled out, the cut spinal vertebral body block can be pulled out from the patient's vertebral plate at the same time, thereby achieving accurate and safe cutting of the spinal vertebral body block and establishing a bone channel on the vertebral plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the external ring saw in the utility model;

[0019] Figure 3 It is a schematic diagram of the structure after the two detection rings in the utility model are matched. DETAILED DESCRIPTION

[0020] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 those skilled in the art without creative work are within the scope of protection of the present invention.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] like Figure 1 to Figure 3 As shown, a spinal endoscope explorable and fast-tightening bone removal device comprises a positioning sleeve 1, an external circumferential saw 2 and an endoscope which are sequentially sleeved from the outside to the inside.

[0023] The lower end of the positioning sleeve 1 has a downwardly extending blade 101, which is not a full circle, and its corresponding arc is not greater than 180°. The length of the blade 101 is 3-5 mm, and the bottom edge of the positioning sleeve 1 is used to limit the blade 101. The positioning sleeve 1 is inserted into the bone layer through the blade 101 to achieve targeted positioning and provide a stable channel for the endoscopic ring saw 2, preventing the endoscopic ring saw 2 from slipping during cutting, and reducing the risk of nerve damage.

[0024] The lower end of the endoscopic ring saw 2 is provided with a circle of blunt teeth, and the inner wall of the lower end of the endoscopic ring saw 2 is provided with a bone removal thread. In the process of cutting the spinal vertebral body in a ring, the thread teeth of the bone removal thread form a thread groove that cooperates with the outer side of the cut spinal vertebral body block, so that the cut spinal vertebral body is fixed in the inner cavity of the endoscopic ring saw 2. After the endoscopic ring saw 2 completes the cutting of the spinal vertebral body and pulls it out, it can simultaneously pull out the cut spinal vertebral body block from the patient's vertebral plate, thereby achieving accurate and safe cutting of the spinal vertebral body block and establishing a bone channel on the vertebral plate.

[0025] Two detection windows 202 are provided on the outer wall below the mirror outer ring saw 2, and the two detection windows 202 are arranged opposite to each other in a radial direction. Each detection window 202 is arranged along the length direction, and a half circle detection ring 203 is buckled outside each detection window 202. A first permanent magnet 204 and a signal transmitter 206 are embedded on the inner wall of one detection ring 203, and a second permanent magnet 205 and a signal receiver 207 are embedded on the inner wall of the other detection ring 203. The first permanent magnet 204 and the second permanent magnet 205 attract each other under the action of magnetic field attraction. The two detection rings 203 are fixed on the mirror outer ring saw 2 by magnetic adsorption, so that the detection ring 203 is detachable, which is convenient for the disinfection of the mirror outer ring saw 2 after surgery. The signal sent by the signal transmitter 206 can be received by the signal receiver 207, and transmitted to the external controller through the signal receiver 207.

[0026] Two relative exploration windows 202 are provided on the outer wall below the endoscopic ring saw 2, and a signal generator and a signal receiver 207 are arranged between the two exploration windows 202. In normal operation, the signal emitted by the signal generator can be received by the signal receiver 207. Once the signal emitted by the signal generator cannot be received by the signal receiver 207, the cutting is completed and the cutting depth is within the allowable limit. No further cutting is required, thereby reducing the risk of damaging the nerve roots and dura mater sac in the spinal canal. At the same time, it also avoids repeated exploration by the doctor during the operation, thereby improving the efficiency of the operation.

[0027] In the explorable and quickly tightened bone removal device for spinal endoscopy, in order to achieve pressure on the endoscopic ring saw 2 during cutting, a circumferential recessed area is provided on the outer wall below the endoscopic ring saw 2, and the exploration window 202 is arranged in the recessed area. After installation, the exploration ring 203 does not protrude from the outer surface of the endoscopic ring saw 2, so that the outer wall of the endoscopic ring saw 2 and the positioning sleeve 1 can be connected by a thread.

[0028] When the endoscopic ring saw 2 is installed inside the positioning sleeve 1 and rotated, the threaded structure can accurately grasp and adjust the rotation speed and screw-in depth of the endoscopic ring saw 2, while preventing the endoscopic ring saw 2 from falling into the air or even penetrating into the spinal canal when installed in the positioning sleeve 1 to implement pressure-driven cutting, causing the risk of nerve damage.

[0029] In addition, in order to further enhance the stability of the assembly of the detection ring 203, annular anti-slip grooves are arranged on the recessed area, and the inner wall of the detection ring 203 has at least one positioning groove 208 that cooperates with the anti-slip grooves. The anti-slip grooves can be embedded in the positioning grooves 208 to prevent the detection ring 203 from sliding down by means of concave and convex interlocking.

[0030] The exploration ring 203 can be adjusted to suit different patients. A scale line showing the distance from the bottom end of the outer ring saw 2 of the scope is provided on one side of the exploration window 202 to facilitate the adjustment of the exploration ring 203 .

[0031] The above are only preferred embodiments of the present invention. Any simple modification, deformation and equivalent replacement made by anyone to the present invention according to the content of the present invention shall fall within the protection scope of the present invention.

Claims

1. A spinal endoscope capable of rapid screwing and bone removal, comprising a positioning sleeve (1), an external trephine ring (2) and an endoscope which are sequentially sleeved from outside to inside, characterized in that: The lower end of the positioning sleeve (1) has a sharp blade (101) extending downward; the lower end of the external mirror ring saw (2) has a circle of blunt teeth, the inner wall of the lower end of the external mirror ring saw (2) has a section of bone removal thread, and the outer wall below the external mirror ring saw (2) is provided with two exploration windows (202), which are arranged radially opposite to each other, each exploration window (202) is arranged along the length direction, and a half circle of exploration ring (203) is buckled outside each exploration window (202), one of the exploration rings (203) is provided. 3) is embedded with a first permanent magnet (204) and a signal transmitter (206), and the inner wall of the other detection ring (203) is embedded with a second permanent magnet (205) and a signal receiver (207), the first permanent magnet (204) and the second permanent magnet (205) are attracted to each other under the action of magnetic field attraction, and the signal emitted by the signal transmitter (206) can be received by the signal receiver (207) and transmitted to an external controller via the signal receiver (207).

2. The spinal endoscope explorable and fast-tightening bone removal device according to claim 1, characterized in that: The outer wall below the mirror outer ring saw (2) has a circumferential recessed area, the detection window (202) is arranged in the recessed area, and the detection ring (203) does not protrude from the outer surface of the mirror outer ring saw (2) after installation; The outer wall of the mirror outer ring saw (2) and the positioning sleeve (1) are threadedly connected.

3. The spinal endoscope explorable and fast-tightening bone removal device according to claim 1, characterized in that: The arc corresponding to the sharp blade (101) is no greater than 180°, and the length of the sharp blade (101) is 3-5 mm.

4. The spinal endoscope detectable and fast-tightening bone removal device according to claim 2, characterized in that: The recessed area is provided with circumferential anti-skid patterns, and the inner wall of the detection ring (203) is provided with at least one positioning groove (208) matching with the anti-skid patterns, and the anti-skid patterns can be embedded in the positioning groove (208).

5. The spinal endoscope detectable and fast-tightening bone removal device according to claim 1, characterized in that: One side of the detection window (202) has a scale line showing the distance from the bottom end of the mirror outer ring saw (2).

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