Medical laser ablation cutter

Abstract

The present application relates to the technical field of ablation cutters. Disclosed is a medical laser ablation cutter, comprising an ablation cutter main body mechanism, wherein the ablation cutter main body mechanism comprises an instrument fixing main body, an adjustment groove is formed in an inner wall of the instrument fixing main body, a plurality of positioning slots are formed in an inner wall of the adjustment groove, and two sliding grooves are formed in the inner wall of the instrument fixing main body and close to one end. In the medical laser ablation cutter, a metal tube telescopic limiter is turned to allow a positioning block to be turned into the adjustment groove, such that the metal tube telescopic limiter can be pulled to slide in the instrument fixing main body; and after the distance between a fixing tube and the metal tube telescopic limiter is adjusted, the metal tube telescopic limiter is reversely turned to allow the positioning block to be inserted into a positioning slot, so as to prevent a limit tube from automatically moving, and then by means of sliding bars sliding in the sliding grooves, the position of the limit tube can be effectively limited, so as to avoid jamming during the adjustment due to the improvement on traditional thread adjustment.

Description

A medical laser ablation knife

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on July 25, 2023, with application number 202310914321.1 and invention name “A Medical Laser Ablation Knife”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of ablation knives, and specifically to a medical laser ablation knife. Background Art

[0003] When treating intracranial tumors, doctors prioritize minimally invasive approaches. The surgical procedure involves creating a 4mm-diameter window in the skull, inserting a catheter, and reaching the lesion. A biopsy instrument is then inserted into the catheter to obtain a biopsy of the lesion to determine whether the tumor is benign or malignant. However, there is a high probability of bleeding during the biopsy. Blood from the lesion contains tumor cells, which can flow into normal tissue and cause metastasis and regeneration of cancer cells. This suggests that there is a risk of cancer cell metastasis during neurosurgery biopsies and minimally invasive procedures. Research suggests that lasers can ablate and inactivate cancer cells during biopsies and minimally invasive procedures. To prevent this, multiple studies have concluded that the slenderness, precision, and safe hemostatic and ablation effects of laser fibers offer a potential surgical solution for this clinical problem. Laser minimally invasive ablation involves emitting laser energy from a laser therapy device, which is then transmitted via optical fibers to the lesion. This energy is absorbed by the lesion tissue, generating high temperatures that inactivate cancer cells. Laser ablation has been used for many years in both China and abroad, and numerous clinical studies have demonstrated that laser ablation of tumor cells is safe and effective.

[0004] At present, in order to improve the existing situation, reduce the risk of cancer cell metastasis during surgery, improve the effect of treatment, and alleviate the quality of life and financial pressure of patients, a medical laser ablation knife has been specially invented. However, when the existing ablation knife is grasped to adjust the distance of the metal tube to separate the ablation head and tissue, it is adjusted by rotating a long thread. The adjustment speed of the thread rotation is slow and it is easy to get stuck, which affects the operation.

[0005] Therefore, we propose a medical laser ablation knife to solve the above problems. Technical issues

[0006] The purpose of this application is to provide a medical laser ablation knife to solve the problem proposed in the above background technology that the existing ablation knife is adjusted by rotating a longer thread when grasping the handle to adjust the distance of the metal tube to separate the ablation head and tissue. The adjustment speed of the thread rotation is slow and it is easy to get stuck, which affects the operation. Technical Solutions

[0007] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a medical laser ablation knife, comprising: an ablation knife main body mechanism, the ablation knife main body mechanism includes an instrument fixing body, the inner wall of the instrument fixing body is provided with an adjustment groove, the inner wall of the adjustment groove is provided with a plurality of positioning grooves, and the inner wall of the instrument fixing body is provided with two sliding grooves near one end; a handle mechanism, the handle mechanism includes a handle, the outer surface of the handle is provided with an anti-slip sleeve, and the outer surface of the anti-slip sleeve is fixed with a plurality of anti-slip nails; a limiting mechanism, the limiting mechanism is movably installed inside the instrument fixing body, the limiting mechanism includes a metal tube telescopic limiter, one side of the metal tube telescopic limiter is provided with a rotating groove, the inner wall of the rotating groove is rotatably connected to a rotating block, one side of the rotating block is fixedly connected to the limiting tube, and both sides of the limiting tube The outer surface is fixedly installed with a sliding bar, and the outer surface of the metal tube telescopic limiter is fixedly connected to a positioning block. When in use, the metal tube telescopic limiter is rotated to rotate the positioning block into the adjusting groove, and the metal tube telescopic limiter can be pulled to slide inside the fixed body of the instrument. After adjusting the distance between the fixed tube and the metal tube telescopic limiter, the metal tube telescopic limiter is rotated in the opposite direction to insert the positioning block into the positioning groove to prevent the limiting tube from moving automatically. At this time, the position of the limiting tube can be effectively limited by sliding the sliding bar inside the sliding groove. The traditional thread adjustment is improved during the adjustment process, and there will be no jamming. This solves the problem that the existing ablation knife is easily jammed by rotating a longer thread when the grip handle is used to adjust the distance of the metal tube to separate the ablation head and tissue, thereby affecting the operation.

[0008] Preferably, the outer surfaces of the two slide bars are respectively slidably connected to the inner walls of the two slide grooves, the outer surface of the positioning block is slidably connected to the inner wall of the adjusting groove, and one side of the positioning block matches the interior of the positioning groove. The slide bar is limited by the slide groove, so that the slide bar can only slide in a straight line and cannot rotate, which can prevent the limiting tube from driving the telescopic metal tube to rotate, and the width of the positioning block is matched with the inner width of the adjusting groove. When moving the metal tube telescopic limiter, the positioning block slides in the adjusting groove, and the positioning block can be inserted into the positioning groove for positioning.

[0009] Preferably, a fixing tube is slidably connected to the interior of the fixed body of the instrument, and a locker is movably connected to the inner wall of the fixing tube. The locker can be installed through the fixing tube, and the locker can cover the telescopic metal tube.

[0010] Preferably, an expansion nut is provided on the outer surface of the lock, and the outer surface of the fixed tube is threadedly connected to the inner wall of the expansion nut near one end. By rotating the expansion nut, the expansion nut tightens the four petals of the lock, wherein the structure of the lock is divided into four petals, which is convenient for fixing the telescopic metal tube.

[0011] Preferably, the other end of the instrument fixing body is threadedly connected to a locking part, and the inner wall of the locking part is movably connected to an internal lock. The locking part can be installed on the instrument fixing body by twisting the locking part, and can be removed by twisting it in the opposite direction. At this time, the internal lock is inserted into the locking part to complete the installation.

[0012] Preferably, a fiber optic holder is movably sleeved on the outer surface of the internal lock, and the outer surface of the locking part is threadedly connected to the inner wall of the fiber optic holder near one end. By rotating the fiber optic holder, the fiber optic holder is connected to the locking part, thereby tightening the four petals of the internal lock and clamping the laser optical fiber. The structure of the internal lock is divided into four petals, which is convenient for fixing the laser optical fiber.

[0013] Preferably, fixing blocks are fixedly installed on both sides of the instrument fixing body and both sides of the fixing tube, and fixing holes are opened on the opposite side of the handle. The handle can be installed by clamping the fixing holes on the fixing blocks.

[0014] Preferably, the inner walls of the four fixing holes are rotatably connected to the outer surfaces of the four fixing blocks respectively, and a mounting groove is provided on one side of the four fixing holes, wherein each mounting groove is connected to a fixing hole. Then, when installing the handle, the fixing hole is easier to correspond to the fixing block through the mounting groove.

[0015] Preferably, a step is fixedly installed on one end of the instrument fixing body, and a laser optical fiber is arranged inside the instrument fixing body. By providing multiple layers of steps at the front end of the instrument fixing body, different instrument catheters can be adapted for surgery.

[0016] Preferably, a telescopic metal tube is provided on the outer surface of the laser optical fiber, and a laser ablation head is provided at one end of the laser optical fiber. The laser optical fiber is wrapped by the telescopic metal tube, so that the laser ablation head can be retracted into the tube. Beneficial effects

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. When in use, by rotating the metal tube telescopic limiter, the positioning block is rotated into the adjusting groove, and the metal tube telescopic limiter can be pulled to slide inside the fixed body of the instrument. After adjusting the distance between the fixed tube and the metal tube telescopic limiter, the metal tube telescopic limiter is rotated in the opposite direction so that the positioning block is inserted into the positioning groove to prevent the limiting tube from moving automatically. At this time, the position of the limiting tube can be effectively limited by sliding the slide bar inside the slide groove. The traditional thread adjustment is improved during the adjustment process, and there will be no jamming. This solves the problem that the existing ablation knife is easily jammed by rotating a longer thread when grasping the handle to adjust the distance of the metal tube to separate the ablation head and tissue, thereby affecting the operation.

[0019] 2. When in use, the laser is guided into the laser optical fiber for transmission, the laser power of the laser therapy machine is set, and the laser is emitted to the end of the laser optical fiber. The end of the laser optical fiber is processed by technology to convert the transmitted laser energy into heat energy, which is used to stop bleeding and ablate lesions. After the laser energy is converted into heat energy, it acts on the tumor tissue. The hemoglobin and water molecules in the tissue absorb heat. When the temperature reaches above 60 degrees, the protein is denatured to destroy the tumor cells, thereby achieving the therapeutic effect. As time goes by, the heat is transferred to the surrounding cancer cells.

[0020] 3. During use, when the laser ablation head has finished ablation, hold the handle and gently press down the telescopic metal tube. The telescopic metal tube will press against the tissue that wraps around the laser ablation head. Retract the laser ablation head into the telescopic metal tube, separate the laser ablation head and tissue, and slowly withdraw the laser ablation knife. The operation is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG1 is a front perspective view of a medical laser ablation knife of the present application;

[0022] Figure 2 is an enlarged view of point A in Figure 1 of this application;

[0023] FIG3 is an expanded perspective view of a partial structure of a handle mechanism of a medical laser ablation knife of the present application;

[0024] FIG4 is a partially cutaway perspective view of the main mechanism of a medical laser ablation knife of the present application;

[0025] FIG5 is a partially cutaway perspective view of an adjustment slot of a medical laser ablation knife of the present application;

[0026] FIG6 is a partially cutaway perspective view of a metal tube telescopic limiter of a medical laser ablation knife of the present application;

[0027] FIG7 is a schematic diagram of a partial cross-sectional front view of the ablation knife main body mechanism of a medical laser ablation knife of the present application;

[0028] FIG8 is a three-dimensional cross-sectional view of the main mechanism of the ablation knife of a medical laser ablation knife of the present application from another angle.

[0029] In the picture:

[0030] 1. Ablation knife main body; 101. Instrument fixing body; 102. Adjustment slot; 103. Positioning slot; 104. Slide slot; 105. Fiber optic holder; 106. Internal lock; 107. Locking parts; 108. Expansion nut; 109. Fixing tube; 110. Lock; 2. Handle mechanism; 201. Handle; 202. Anti-slip sleeve; 203. Anti-slip spike; 204. Mounting slot; 205. Fixing block; 3. Laser fiber; 4. Step; 5. Telescopic metal tube; 6. Laser ablation head; 7. Limiting mechanism; 701. Metal tube telescopic limiter; 702. Limiting tube; 703. Rotating slot; 704. Rotating block; 705. Sliding bar; 706. Positioning block. Modes for Carrying Out the Invention

[0031] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the implementation regulations described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0032] 1-8 , the present application provides a technical solution: a medical laser ablation knife, comprising: an ablation knife main body mechanism 1, the ablation knife main body mechanism 1 comprises an instrument fixing body 101, the inner wall of the instrument fixing body 101 is provided with an adjustment groove 102, the inner wall of the adjustment groove 102 is provided with a plurality of positioning grooves 103, and the inner wall of the instrument fixing body 101 is provided with two sliding grooves 104 near one end; a handle mechanism 2, the handle mechanism 2 comprises a handle 201, the outer surface of the handle 201 is provided with an anti-slip sleeve 202, and the outer surface of the anti-slip sleeve 202 is fixed with a plurality of anti-slip spikes 203; a limiting mechanism 7, the limiting mechanism 7 is movably installed inside the instrument fixing body 101, the limiting mechanism 7 comprises a metal tube telescopic limiter 701, a rotating groove 703 is provided on one side of the metal tube telescopic limiter 701, the inner wall of the rotating groove 703 is rotatably connected to a rotating block 704, one side of the rotating block 704 is fixedly connected to the limiting tube 702, and the outer surfaces of both sides of the limiting tube 702 The metal tube extension limiter 701 is fixedly installed with a slide bar 705, and the outer surface of the metal tube extension limiter 701 is fixedly connected to a positioning block 706. When in use, by rotating the metal tube extension limiter 701, the positioning block 706 is rotated into the adjustment groove 102, and the metal tube extension limiter 701 can be pulled to slide inside the fixed body 101 of the instrument. After adjusting the distance between the fixed tube 109 and the metal tube extension limiter 701, the metal tube extension limiter 701 is rotated in the opposite direction so that the positioning block 706 is inserted into the positioning groove 103 to prevent the limiting tube 702 from moving automatically. At this time, the position of the limiting tube 702 can be effectively limited by sliding the slide bar 705 inside the slide groove 104. The traditional thread adjustment is improved during the adjustment process, and there will be no jamming. This solves the problem that the existing ablation knife is easily jammed by rotating a longer thread when the grip handle is used to adjust the distance of the metal tube to separate the ablation head and tissue, thereby affecting the operation.

[0033] As shown in Figures 7-8, the outer surfaces of the two slides 705 are respectively slidably connected to the inner walls of the two slide grooves 104, and the outer surface of the positioning block 706 is slidably connected to the inner wall of the adjustment groove 102. One side of the positioning block 706 matches the inside of the positioning groove 103. The slide groove 104 limits the slide 705, so that the slide 705 can only slide in a straight line and cannot rotate, which can prevent the limiting tube 702 from driving the telescopic metal tube 5 to rotate. The width of the positioning block 706 matches the inner width of the adjustment groove 102. When moving the metal tube telescopic limiter 701, the positioning block 706 slides in the adjustment groove 102. When positioning, the positioning block 706 can be inserted into the positioning groove 103.

[0034] As shown in Figures 7-8, the interior of the instrument fixed body 101 is slidably connected to a fixed tube 109, and the inner wall of the fixed tube 109 is movably connected to a locker 110. The locker 110 can be installed through the fixed tube 109, and the locker 110 can cover the telescopic metal tube 5.

[0035] As shown in Figures 7-8, an expansion nut 108 is movably sleeved on the outer surface of the locker 110, and the outer surface of the fixed tube 109 is threadedly connected to the inner wall of the expansion nut 108 near one end. By rotating the expansion nut 108, the expansion nut 108 tightens the four petals of the locker 110. The structure of the locker 110 is divided into four petals, which is convenient for fixing the telescopic metal tube 5.

[0036] As shown in Figures 7-8, the other end of the instrument fixing body 101 is threadedly connected to a locking part 107, and the inner wall of the locking part 107 is movably connected to an internal lock 106. The locking part 107 can be installed on the instrument fixing body 101 by twisting the locking part 107. When disassembling, it can be removed by twisting it in the opposite direction. At this time, the internal lock 106 is inserted into the locking part 107 to complete the installation.

[0037] As shown in Figures 7-8, the outer surface of the internal lock 106 is movably sleeved with an optical fiber holder 105, and the outer surface of the locking part 107 is threadedly connected to the inner wall of the optical fiber holder 105 near one end. By rotating the optical fiber holder 105, the optical fiber holder 105 is connected to the locking part 107, thereby tightening the four petals of the internal lock 106 and clamping the laser optical fiber 3. The structure of the internal lock 106 is divided into four petals, which is convenient for fixing the laser optical fiber 3.

[0038] As shown in Figures 1 and 3, fixing blocks 205 are fixedly installed on both sides of the instrument fixing body 101 and both sides of the fixing tube 109, and fixing holes are opened on the opposite side of the handle 201. By clamping the fixing holes on the fixing blocks 205, the installation of the handle 201 can be completed.

[0039] As shown in Figures 1 and 3, the inner walls of the four fixing holes are rotatably connected to the outer surfaces of the four fixing blocks 205 respectively, and a mounting groove 204 is provided on one side of the four fixing holes, wherein each mounting groove 204 is connected to a fixing hole. Therefore, when installing the handle 201, the fixing hole is easier to correspond to the fixing block 205 through the mounting groove 204.

[0040] As shown in Figures 1, 4, 7 and 8, a step 4 is fixedly installed at one end of the instrument fixing body 101, and a laser optical fiber 3 is arranged inside the instrument fixing body 101. By providing multiple layers of steps 4 at the front end of the instrument fixing body 101, different instrument catheters can be adapted for surgery.

[0041] As shown in Figures 1, 7 and 8, a telescopic metal tube 5 is provided on the outer surface of the laser fiber 3, and a laser ablation head 6 is provided at one end of the laser fiber 3. The laser fiber 3 is wrapped by the telescopic metal tube 5, so that the laser ablation head 6 can be retracted into the tube.

[0042] The method of use and working principle of this device: When in use, the position length of the laser fiber 3 can be adjusted by the fiber holder 105 to adjust the length of the laser ablation head 6, and tumors of different depths can be adjusted accordingly. The locking part 107 can adjust the length of the telescopic metal tube 5. The metal tube telescopic limiter 701 can be adjusted according to clinical needs. The distance of the limit tube 702 when the handle 201 is pressed and gripped can be adjusted. The front end of the instrument fixing body 101 is provided with multiple steps 4, which can be adapted to different instrument catheters for surgery. The laser treatment machine emits 810nm, 980nm and 10 The 64nm wavelength laser is connected to the SMA905 connector of this optical fiber, and the laser is introduced into the laser optical fiber 3 for transmission. The laser power of the laser therapy machine is set, and the laser is emitted to the end of the laser optical fiber 3. The end of the laser optical fiber 3 is processed by technology to convert the transmitted laser energy into heat energy, which is used to stop bleeding and ablate lesions. After the laser energy is converted into heat energy, it acts on the tumor tissue. The hemoglobin and water molecules in the tissue absorb heat. When the temperature reaches above 60 degrees, the protein is denatured to destroy the tumor cells, thereby achieving the therapeutic effect. As time goes by, the heat The amount of heat is transferred to the surrounding cancer cells. The ablation range can be observed in the MRI equipment. When the tumor size measured by the preoperative CT image is reached, the laser is stopped and the ablation is completed. Hold the handle 201 and rotate the metal tube telescopic limiter 701. The telescopic metal tube 5 supports the tissue that wraps the ablation head. The laser ablation head 6 is retracted into the telescopic metal tube 5 to separate the ablation head and tissue. The laser ablation head 6 is slowly withdrawn and the operation is completed. In order to solve the problem of jamming when adjusting the limiter tube 702, the following solution is proposed: by rotating the metal tube telescopic limiter 701, the positioning When the block 706 is rotated into the adjustment groove 102, the metal tube telescopic limiter 701 can be pulled to slide inside the instrument fixed body 101. After adjusting the distance between the fixed tube 109 and the metal tube telescopic limiter 701, the metal tube telescopic limiter 701 is rotated in the opposite direction so that the positioning block 706 is inserted into the positioning groove 103 to prevent the limiting tube 702 from moving automatically. At this time, the position of the limiting tube 702 can be effectively limited by sliding the slide bar 705 inside the slide groove 104. The traditional thread adjustment is improved during the adjustment process and no jamming occurs.

[0043] Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A medical laser ablation knife, characterized in that: include: An ablation knife main body mechanism (1), the ablation knife main body mechanism (1) comprising an instrument fixing body (101), an inner wall of the instrument fixing body (101) being provided with an adjustment groove (102), an inner wall of the adjustment groove (102) being provided with a plurality of positioning grooves (103), and an inner wall of the instrument fixing body (101) being provided with two slide grooves (104) near one end; A handle mechanism (2), the handle mechanism (2) comprising a handle (201), the outer surface of the handle (201) being covered with an anti-slip cover (202), the outer surface of the anti-slip cover (202) being fixed with a plurality of anti-slip spikes (203); A limiting mechanism (7), wherein the limiting mechanism (7) is movably mounted inside the fixed body (101) of the instrument, and the limiting mechanism (7) comprises a metal tube telescopic limiter (701), a rotating groove (703) is provided on one side of the metal tube telescopic limiter (701), a rotating block (704) is rotatably connected to the inner wall of the rotating groove (703), one side of the rotating block (704) is fixedly connected to a limiting tube (702), sliding strips (705) are fixedly mounted on the outer surfaces of both sides of the limiting tube (702), and a positioning block (706) is fixedly connected to the outer surface of the metal tube telescopic limiter (701).

2. The medical laser ablation knife according to claim 1, characterized in that: The outer surfaces of the two slide bars (705) are respectively slidably connected to the inner walls of the two slide grooves (104), the outer surface of the positioning block (706) is slidably connected to the inner wall of the adjustment groove (102), and one side of the positioning block (706) matches the inside of the positioning groove (103).

3. The medical laser ablation knife according to claim 1, characterized in that: A fixing tube (109) is slidably connected to the interior of the instrument fixing body (101), and a locker (110) is movably connected to the inner wall of the fixing tube (109).

4. The medical laser ablation knife according to claim 3, characterized in that: An expansion nut (108) is movably sleeved on the outer surface of the locker (110), and an outer surface of the fixing tube (109) is threadedly connected to an inner wall of the expansion nut (108) near one end.

5. The medical laser ablation knife according to claim 4, characterized in that: The other end of the instrument fixing body (101) is threadedly connected to a locking part (107), and the inner wall of the locking part (107) is movably connected to an internal lock (106).

6. The medical laser ablation knife according to claim 5, characterized in that: An optical fiber holder (105) is movably sleeved on the outer surface of the internal lock (106), and an outer surface of the locking part (107) is threadedly connected to the inner wall of the optical fiber holder (105) near one end.

7. The medical laser ablation knife according to claim 4, characterized in that: Fixing blocks (205) are fixedly mounted on both sides of the instrument fixing body (101) and both sides of the fixing tube (109), and fixing holes are provided on the opposite side of the handle (201).

8. The medical laser ablation knife according to claim 7, characterized in that: The inner walls of the four fixing holes are rotatably connected to the outer surfaces of the four fixing blocks (205) respectively, and a mounting groove (204) is provided on one side of the four fixing holes.

9. The medical laser ablation knife according to claim 1, characterized in that: A step (4) is fixedly mounted on one end of the instrument fixing body (101), and a laser optical fiber (3) is arranged inside the instrument fixing body (101).

10. The medical laser ablation knife according to claim 9, characterized in that: The outer surface of the laser optical fiber (3) is provided with a telescopic metal tube (5), and one end of the laser optical fiber (3) is provided with a laser ablation head (6).

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