A multifunctional visual trephine for dual-channel minimally invasive surgery

Abstract

The present invention discloses a multifunctional visual trephine for dual-channel minimally invasive surgery, comprising a trephine, a positioning device, a spring and an endoscope. The trephine is used for percutaneous spinal surgery, the positioning device is clamped in the trephine for positioning; the spring is sleeved on the positioning device and is located inside the trephine; the endoscope is located inside the positioning device for increasing the surgical field of view. The present invention can monitor the position of nerves in real time to prevent the trephine from cutting nerves by mistake. When the trephine moves, the endoscope can follow up in time, increasing the surgical field of view, and can timely flush and absorb tissue fluid in the affected area.

Description

Technical Field

[0001] The invention belongs to the technical field of medical instruments and relates to minimally invasive surgical tools, and in particular to a multifunctional visual ring saw used for dual-channel minimally invasive surgery. Background Art

[0002] With the continuous development and innovation of spinal surgical instruments and surgical methods, minimally invasive spinal surgery (MISS) has become an important surgical concept in spinal surgery. Although traditional spinal fusion or non-fusion surgery has been widely used to treat degenerative lesions such as intervertebral disc herniation or spinal stenosis, this type of traditional open surgery has disadvantages such as large surgical trauma, more intraoperative complications and longer postoperative recovery time. How to ensure that the treatment effect is achieved or close to that of traditional open surgery while minimizing the trauma to normal soft tissue is the main surgical goal and local principle of MISS.

[0003] Percutaneous endoscopic spinal surgery (PESS) is a type of minimally invasive spinal surgery. It has been widely used in the treatment of degenerative lesions of the cervical, thoracic and lumbar spine due to its small surgical trauma, short postoperative recovery time and good clinical effects. Percutaneous endoscopic discectomy has become one of the minimally invasive surgeries for the effective treatment of lumbar disc herniation, and the trephine is a commonly used surgical instrument in percutaneous spinal surgery. It can effectively avoid or remove bony tissue that blocks the catheterization, and has the advantages of small trauma, small incision, no need for muscle stripping, no need for excessive bone removal, small impact on spinal stability, fast recovery, and short hospitalization time. At present, percutaneous endoscopic spinal surgery technology has basically matured and has achieved good clinical results in spinal decompression. However, it still needs further exploration in aspects such as spinal reconstruction, and surgical techniques to improve surgical efficiency also need further innovation and improvement. The price is also relatively high.

[0004] The main problems and defects in the prior art include:

[0005] In the prior art, endoscopic ring saws are mostly used, but their disadvantages are that the endoscopic operation channel limits the operation direction of the ring saw, the position visible under the endoscope is limited, and when the ring saw is inserted, it needs to be positioned separately and the saw teeth are easy to damage the peripheral nerves; during operation, one hand is required to fix the working cannula and the endoscope, and the other hand is required to apply forward pressure and rotate the ring saw to grind the bone. When the ring saw moves, the endoscope cannot follow up in time, causing the saw teeth of the ring saw to be out of the endoscopic field of view, and additional adjustment of the positional relationship between the endoscope and the ring saw is required. Summary of the invention

[0006] In view of the above-mentioned problems and defects in the prior art, the present invention provides a multifunctional visual ring saw for dual-channel minimally invasive surgery, which can monitor the position of nerves in real time to prevent the ring saw from accidentally cutting nerves. When the ring saw moves, the endoscope can follow up in time, thereby increasing the surgical field of view and flushing and aspirating tissue fluid in the affected area in time.

[0007] To this end, the present invention adopts the following technical solutions:

[0008] A multifunctional visual ring saw for dual-channel minimally invasive surgery comprises a ring saw, a positioning device, a spring and an endoscope. The ring saw is used for percutaneous spinal surgery. The positioning device is clamped in the ring saw to play a positioning role; the spring is sleeved on the positioning device and is located inside the ring saw; the endoscope is located inside the positioning device to increase the surgical field of view.

[0009] Preferably, the ring saw comprises a handle, a fixed ring, a sleeve, a first through hole, a limit block and a second through hole. The handle is a cross-shaped structure with a first through hole at the center. The handle is fixedly connected to the sleeve just below. The sleeve is a hollow cylindrical structure with an inner diameter equal to the diameter of the first through hole. The lower end of the sleeve is a serrated structure with a second through hole above the serrated structure. A limit block is provided on the inner wall of the sleeve, and a positioning device is clamped in the limit block. A fixed ring is fixedly connected in the middle of the handle.

[0010] Preferably, the positioning device comprises a positioning rod, an endoscope channel, an external thread groove, an open groove, a connecting rod, a connecting cap, a flushing and suction channel and a puncture channel; the upper end of the connecting rod is connected to the connecting cap by a thread, the lower end of the connecting rod is fixedly connected to the positioning rod, and the spring is sleeved on the connecting rod between the positioning rod and the fixing ring; the upper end in the middle of the front end face of the positioning rod is provided with an open groove opening forward, the bottom of the open groove is flush with the connecting rod, the positioning rod at the lower end of the open groove is provided with an external thread groove, and the upper end of the external thread groove is communicated with the open groove; the endoscope channel is provided in the middle of the positioning rod and the connecting rod, and an endoscope is inserted into the endoscope channel; the flushing and suction channel and the puncture channel are respectively provided at the front and rear ends of the endoscope channel, and a flushing and suction pipeline is inserted into the flushing and suction channel for timely flushing and suctioning tissue fluid of the affected area; the puncture channel is inserted with a stimulation probe, and the stimulation probe is electrically connected to a nerve monitor for real-time monitoring of nerve position to prevent mis-cutting of nerves.

[0011] Preferably, the lower end of the positioning rod is a rounded conical structure.

[0012] Preferably, the second through holes are symmetrically arranged at the front and rear ends 1 cm upward from the sawtooth structure at the lower end of the sleeve.

[0013] Preferably, a scale line is provided in the middle of the connecting rod.

[0014] Preferably, the zero mark of the scale line is located at the uppermost position.

[0015] Preferably, the external thread groove is arranged in a counterclockwise direction.

[0016] Preferably, the external thread groove is provided with 12 circles in total and the up and down displacement of each circle is 1 mm, which is used to adjust the position of the positioning rod and the endoscope.

[0017] Preferably, an arrow is provided at the front end of the upper end surface of the fixing ring, and the direction of the arrow is on the same straight line as the scale mark and the limit block.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) When the ring saw is inserted, the positioning device not only plays a positioning role, but also pushes aside the peripheral nerves to prevent the nerves from being damaged during the insertion of the ring saw. In addition, a stimulation probe electrically connected to the nerve monitor is inserted into the puncture channel to facilitate real-time monitoring of the nerve position and prevent the ring saw from accidentally cutting the nerve.

[0020] (2) When the ring saw moves, the endoscope can follow in time, increasing the surgical field of view. The irrigation and suction channel is connected with an irrigation and suction tube to facilitate timely irrigation and suction of tissue fluid in the affected area.

[0021] (3) The present invention has a reasonable structural design and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of different mode conversions of a multifunctional visual ring saw for dual-channel minimally invasive surgery provided by the present invention.

[0023] Figure 2 The present invention provides a schematic structural diagram of a multifunctional visual trephine used for dual-channel minimally invasive surgery.

[0024] Figure 3 The present invention is a schematic structural diagram of a multifunctional visual trephine positioning device for dual-channel minimally invasive surgery.

[0025] Explanation of the accompanying drawings: 1. handle; 1-1. arrow; 1-2. fixing ring; 1-3. sleeve; 1-4. first through hole; 1-5. limit block; 1-6; second through hole; 2. positioning rod; 2-1. endoscope channel; 2-2. external thread groove; 2-3. opening groove; 2-4. connecting rod; 2-5. connecting cap; 2-6. flushing and suction channel; 2-7. puncture channel; 3. scale line; 4. endoscope; 5. spring. DETAILED DESCRIPTION

[0026] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, wherein the specific embodiments and descriptions are only used to explain the present invention but are not intended to limit the present invention.

[0027] like Figure 1As shown, the present invention discloses a multifunctional visual ring saw for dual-channel minimally invasive surgery, including a ring saw, a positioning device, a spring 5 and an endoscope 4. The ring saw is used for percutaneous spinal surgery, and the positioning device is clamped in the ring saw to play a positioning role; the spring 5 is sleeved on the positioning device and is located inside the ring saw; the endoscope 4 is located inside the positioning device to increase the surgical field of view.

[0028] Specifically, Figure 2 As shown, the ring saw includes a handle 1, a fixed ring 1-2, a sleeve 1-3, a first through hole 1-4, a limit block 1-5 and a second through hole 1-6. The handle 1 is a cross-shaped structure with a first through hole 1-4 at the center. The handle 1 is fixedly connected to the sleeve 1-3 just below. The sleeve 1-3 is a hollow cylindrical structure. The inner diameter of the sleeve 1-3 is equal to the diameter of the first through hole 1-4. The lower end of the sleeve 1-3 is a serrated structure, and a second through hole 1-6 is provided above the serrated structure; a limit block 1-5 is provided on the inner wall of the sleeve 1-3, and a positioning device is clamped in the limit block 1-5; a fixed ring 1-2 is fixedly connected in the middle of the handle 1.

[0029] Specifically, Figure 3 As shown, the positioning device includes a positioning rod 2, an endoscope channel 2-1, an external thread groove 2-2, an open groove 2-3, a connecting rod 2-4, a connecting cap 2-5, a flushing and suction channel 2-6 and a puncture channel 2-7; the upper end of the connecting rod 2-4 is connected to the connecting cap 2-5 by a thread, and the lower end of the connecting rod 2-4 is fixedly connected to the positioning rod 2, and the spring 5 is sleeved on the connecting rod 2-4 between the positioning rod 2 and the fixing ring 1-2; the upper end in the middle of the front end face of the positioning rod 2 is provided with an open groove 2-3 opening forward, the bottom of the open groove 2-3 is flush with the connecting rod 2-4, and the lower end of the open groove 2-3 is The positioning rod 2 is provided with an external thread groove 2-2, and the upper end of the external thread groove 2-2 is communicated with the opening groove 2-3; an endoscope channel 2-1 is provided in the middle of the positioning rod 2 and the connecting rod 2-4, and an endoscope 4 is inserted in the endoscope channel 2-1; the front and rear ends of the endoscope channel 2-1 are respectively provided with a flushing and suction channel 2-6 and a puncture channel 2-7, and the flushing and suction channel 2-6 is inserted with a flushing and suction pipeline for timely flushing and suctioning tissue fluid of the affected area; the puncture channel 2-7 is inserted with a stimulation probe, and the stimulation probe is electrically connected to the nerve monitor for real-time monitoring of the nerve position to prevent accidental cutting of the nerve.

[0030] The lower end of the positioning rod 2 is a rounded conical structure.

[0031] The second through holes 1-6 are symmetrically arranged at the front and rear ends 1 cm above the sawtooth structure at the lower end of the sleeve 1-3.

[0032] A scale line 3 is provided in the middle of the connecting rod 2 - 4 .

[0033] The zero mark of the scale line 3 is located at the uppermost position.

[0034] The external thread groove 2-2 is arranged in a counterclockwise direction.

[0035] The external thread groove 2 - 2 is provided with 12 circles in total and the up and down displacement of each circle is 1 mm, which is used to adjust the position of the positioning rod 2 and the endoscope 4 .

[0036] An arrow 1-1 is provided at the front end of the upper end surface of the fixing ring 1-2, and the direction of the arrow 1-1 is located on the same straight line as the scale mark and the limit block 1-5.

[0037] Example

[0038] like Figure 1-3As shown, the present invention provides a multifunctional visual ring saw for double-channel minimally invasive surgery, including a ring saw, a positioning device, a spring 5 and an endoscope 4, the ring saw is composed of a handle 1, a fixing ring 1-2, a sleeve 1-3, a first through hole 1-4, a limit block 1-5 and a second through hole 1-6, the handle 1 is a cross-shaped structure and the first through hole 1-4 is arranged in the middle, the sleeve 1-3 is fixedly connected directly below the handle 1 and the inner diameter of the sleeve 1-3 is the same as that of the first through hole 1-4, the fixing ring 1-2 is fixedly connected in the middle of the handle 1, the lower end of the sleeve 1-3 is serrated and its lower part is A second through hole 1-6 is symmetrically arranged at the front and rear ends 1 cm upward. On the one hand, it is convenient for bone blood to flow out of the second through hole 1-6 during bone drilling and cutting. On the other hand, a visual window is formed for easy observation. A limiting block 1-5 is fixedly connected to the inner wall of the upper part of the front second through hole 1-6, and a positioning device is clamped in the limiting block 1-5; the positioning device consists of a positioning rod 2, an endoscope channel 2-1, an external thread groove 2-2, an opening groove 2-3, a connecting rod 2-4, a connecting cap 2-5, a flushing and suction channel 2-6 and a puncture channel 2-7. The upper end of the connecting rod 2-4 is provided with The outer thread is connected with a connecting cap 2-5 through a thread, which is convenient for disassembly and cleaning; the lower end of the connecting rod 2-4 is fixedly connected with a positioning rod 2, and the spring 5 is sleeved on the connecting rod 2-4 between the positioning rod 2 and the fixing ring 1-2; the lower end of the positioning rod 2 is a rounded conical structure, which is used to reduce damage to surrounding tissues and tissue nerves, and the upper end in the middle of the front end face of the positioning rod 2 is provided with an opening groove 2-3 opening forward, and the bottom of the opening groove 2-3 is flush with the connecting rod 2-4; the positioning rod 2 at the lower end of the opening groove 2-3 is counterclockwise provided with an outer thread groove 2-2, and the outer thread groove 2-2 The upper end is communicated with the opening groove 2-3, and an endoscope channel 2-1 is arranged in the middle of the positioning rod 2 and the connecting rod 2-4, and a flushing and suction channel 2-6 and a puncture channel 2-7 are respectively arranged at the front and rear ends of the endoscope channel 2-1; an endoscope 4 is inserted into the endoscope channel 2-1, and when the ring saw moves, the endoscope 4 can follow up in time to increase the surgical field of view; a flushing and suction pipeline is inserted into the flushing and suction channel 2-6 to facilitate timely flushing and suction of tissue fluid in the affected area; a stimulation probe is inserted into the puncture channel 2-7, and the stimulation probe is electrically connected to the nerve monitor to facilitate real-time monitoring and prevent accidental cutting of nerves.

[0039] In this embodiment, a scale line 3 is provided in the middle of the connecting rod 2 - 4 , and the 0 scale line is located at the top of the scale line 3 .

[0040] In this embodiment, the external thread groove 2 - 2 is provided with 12 circles and the up and down displacement of each circle is 1 mm, so as to facilitate the adjustment of the position of the positioning rod 2 and the endoscope 4 .

[0041] In this embodiment, the front end of the upper end surface of the fixing ring 1-2 is marked with an arrow 1-1, and the direction of the arrow 1-1 is located on the same straight line as the scale marking and the limit block 1-5, which is convenient for installation.

[0042] Before use, insert the endoscope 4 into the endoscope channel 2-1 from top to bottom, align the limit block 1-5, the opening groove 2-3, the scale mark, and the arrow 1-1 with each other, and the upper end of the connecting rod 2-4 passes through the sleeve 1-3, the spring 5 and the first through hole 1-4 in sequence and is threadedly connected to the connecting cap 2-5; in the initial state, the limit block 1-5 is clamped in the opening groove 2-3 and is located at its upper end. At this time, the spring 5 has no pressure, and the lower end of the positioning rod 2 is 12mm away from the saw teeth; when in use, insert the ring saw in the initial state into the affected area, and the conical positioning rod 2, while playing a positioning role, pushes aside the peripheral nerves to prevent the nerves from being damaged when the ring saw is inserted; fix Hold the positioning rod 2, press the ring saw downward, the spring 5 is compressed, and when the limit block 1-5 slides down to the intersection of the opening groove 2-3 and the external thread groove 2-2, the saw teeth are flush with the lower end of the positioning rod 2, and at the same time, the 0 scale line 3 is flush with the arrow 1-1, and the ring saw reaches the affected area; turn the ring saw clockwise, the limit block 1-5 is clamped in the external thread groove 2-2, the positioning rod 2 moves up with the rotation of the ring saw, or fix the ring saw, turn the positioning rod 2 counterclockwise, adjust the height of the middle endoscope 4, and when moving with the ring saw, the endoscope 4 is convenient to follow up in time to increase the surgical field of view, and the second through holes 1-6 on both sides can discharge bone blood in time to avoid affecting the field of view.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A multifunctional visual trephine for dual-channel minimally invasive surgery, characterized in that: It comprises a ring saw, a positioning device, a spring (5) and an endoscope (4), wherein the ring saw is used for percutaneous spinal surgery, the positioning device is clamped in the ring saw and is used for positioning; the spring (5) is sleeved on the positioning device and is located inside the ring saw; the endoscope (4) is located inside the positioning device and is used to increase the surgical field of view; The ring saw comprises a handle (1), a fixing ring (1-2), a sleeve (1-3), a first through hole (1-4), a stopper (1-5) and a second through hole (1-6); the handle (1) is a cross-shaped structure, the center of which is provided with a first through hole (1-4); the sleeve (1-3) is fixedly connected to the lower part of the handle (1); the sleeve (1-3) is a hollow cylindrical structure, the inner diameter of the sleeve (1-3) is equal to the diameter of the first through hole (1-4); the lower end of the sleeve (1-3) is a sawtooth structure, and the upper part of the sawtooth structure is provided with a second through hole (1-6); a stopper (1-5) is provided on the inner wall of the sleeve (1-3), and a positioning device is clamped in the stopper (1-5); and a fixing ring (1-2) is fixedly connected to the middle of the handle (1); The positioning device comprises a positioning rod (2), an endoscope channel (2-1), an external thread groove (2-2), an opening groove (2-3), a connecting rod (2-4), a connecting cap (2-5), a flushing and suction channel (2-6) and a puncture channel (2-7); the upper end of the connecting rod (2-4) is connected to the connecting cap (2-5) by a thread, the lower end of the connecting rod (2-4) is fixedly connected to the positioning rod (2), and the spring (5) is sleeved on the connecting rod (2-4) between the positioning rod (2) and the fixing ring (1-2); the upper end in the middle of the front end surface of the positioning rod (2) is provided with an opening groove (2-3) opening forward, the bottom of the opening groove (2-3) is flush with the connecting rod (2-4), and the opening groove (2-3) is flush with the connecting rod (2-4). -3) An external thread groove (2-2) is provided on the positioning rod (2) at the lower end, and the upper end of the external thread groove (2-2) is communicated with the opening groove (2-3); an endoscope channel (2-1) is provided in the middle of the positioning rod (2) and the connecting rod (2-4), and an endoscope (4) is inserted into the endoscope channel (2-1); a flushing and suction channel (2-6) and a puncture channel (2-7) are respectively provided at the front and rear ends of the endoscope channel (2-1), and a flushing and suction pipeline is inserted into the flushing and suction channel (2-6) for timely flushing and suctioning tissue fluid of the affected area; a stimulation probe is inserted into the puncture channel (2-7), and the stimulation probe is electrically connected to a nerve monitor for real-time monitoring of nerve position to prevent mis-cutting of nerves; A scale line (3) is provided in the middle of the connecting rod (2-4); The external thread groove (2-2) is arranged in a counterclockwise direction.

2. A multifunctional visual trephine for dual-channel minimally invasive surgery according to claim 1, characterized in that: The lower end of the positioning rod (2) is a rounded conical structure.

3. The multifunctional visual trephine for dual-channel minimally invasive surgery according to claim 1, characterized in that: The second through holes (1-6) are symmetrically arranged at the front and rear ends 1 cm upward from the sawtooth structure at the lower end of the sleeve (1-3).

4. The multifunctional visual trephine for dual-channel minimally invasive surgery according to claim 1, characterized in that: The zero mark of the scale line (3) is located at the uppermost position.

5. The multifunctional visual trephine for dual-channel minimally invasive surgery according to claim 1, characterized in that: The external thread groove (2-2) is provided with 12 circles in total and the up-and-down displacement of each circle is 1 mm, and is used to adjust the position of the positioning rod (2) and the endoscope (4).

6. A multifunctional visual trephine for dual-channel minimally invasive surgery according to any one of claims 1 to 5, characterized in that: An arrow (1-1) is provided at the front end of the upper end surface of the fixing ring (1-2), and the direction of the arrow (1-1) is located on the same straight line as the scale mark and the limit block (1-5).

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