Medical planing device facilitating sampling

Abstract

The medical planing device comprises a grip, a shell is connected to one side of the grip in an inserted mode, a shell is arranged in an inner cavity of the shell in an attached mode, a pricking needle is slidably connected to the middle of an inner cavity of the shell, and a mounting cavity is formed in the side, close to the shell, of the inner cavity of the grip; an adjusting mechanism used for driving the pricking needle to horizontally move is slidably arranged in the middle of an inner cavity of the mounting cavity, a driving mechanism used for driving the adjusting mechanism to horizontally move is arranged on the side, away from the shell, of the inner cavity of the mounting cavity, the driving mechanism comprises a sleeve shell, and a driving rod is fixedly connected to the middle of an inner cavity of the sleeve shell; the lower end of the driving rod is slidably connected with the outer wall of the adjusting mechanism. After the outer shell and the shell complete cutting of a focus, the focus is inserted and fixed through the needle immediately, the continuous cutting capacity of the outer shell and the shell is improved, and meanwhile the storage capacity of the shell for the focus part is improved.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, in particular to a medical shaver which is convenient for sampling. Background Art

[0002] A medical shaver is a medical device used to cut, remove, trim or change bones, soft tissues or other biological materials during surgery. Medical shavers require the use of different types of tool components to suit different surgical needs.

[0003] Most medical shavers are unable to store the cut lesion tissue. When cutting larger lesion tissue, the medical shaver may need to be pulled out of the patient's body several times, making continuous cutting impossible. Summary of the invention

[0004] The object of the present invention is to provide a medical shaver that is convenient for sampling, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A medical shaver device for facilitating sampling comprises a handle, a shell is inserted into one side of the handle, a shell is fitted in the inner cavity of the shell, a lancet is slidably connected to the middle of the inner cavity of the shell, a mounting cavity is provided in the inner cavity of the handle close to the outer cavity, an adjusting mechanism for driving the lancet to move horizontally is slidably provided in the middle of the inner cavity of the mounting cavity, a driving mechanism for driving the adjusting mechanism to move horizontally is provided on the side of the inner cavity of the mounting cavity away from the outer cavity, the driving mechanism comprises a sleeve, a driving rod is fixedly connected to the middle of the inner cavity of the sleeve, the lower end of the driving rod is slidably connected to the outer wall of the adjusting mechanism, when the driving mechanism rotates clockwise, the sleeve drives the driving rod to rotate synchronously, and drives the adjusting mechanism to move horizontally close to the position of the outer cavity.

[0007] As a further solution of the present invention: a fixing ring is fixedly connected to the side wall of the inner cavity at one end of the shell near the handle, an insertion rod is fixedly connected to the middle part of the fixing ring at one end near the handle, a rotating drum is rotatably connected to the outer wall of the insertion rod near the fixing ring, the outer shell and the shell are both plug-in connected to the handle, a plug-in groove for matching the outer shell and the shell is provided in the middle part of the side of the handle near the shell, and an annular groove is provided on the side of the inner cavity of the handle near the shell.

[0008] As a further solution of the present invention: the inner cavity of the annular groove is rotatably connected to a ratchet, the ratchet is fixedly connected to a rotating ring on a side close to the outer shell, the end of the rotating ring away from the ratchet extends out of the side wall of the handle and is rotatably connected to the handle, and a one-way clamping plate is rotatably connected to the middle of the upper side of the inner cavity of the annular groove, and the middle of the upper end of the one-way clamping plate is elastically connected to the top of the inner cavity of the annular groove through a spring.

[0009] As a further solution of the present invention: the side wall of the ratchet is provided with an arcuate oblique groove which is centrally symmetrical about the center position of the ratchet, the inner cavity of the arcuate oblique groove is slidably connected to a driven rod, and the middle part of the lower end of the driven rod is fixedly connected to a connecting rod.

[0010] As a further solution of the present invention: the connecting rod is slidably matched with the inner cavity of the ratchet, an L-shaped rod is fixedly connected to the middle of the lower end of the connecting rod, and the L-shaped rod is vertically slidably connected to the inner cavity of the annular groove near the side of the rotating drum.

[0011] As a further solution of the present invention: a slide groove is opened on the upper side of the handle close to the outer shell, and the slide groove is located above the one-way clamping plate. The inner cavity of the slide groove is horizontally slidably connected with a pressure plate, and the middle part of the inner cavity of the pressure plate away from the outer shell is fixedly connected with a traction rope. The end of the traction rope away from the pressure plate passes through the bottom of the inner cavity of the slide groove and enters the inner cavity of the annular groove, and is fixedly connected to the middle part of the upper end of the one-way clamping plate.

[0012] As a further solution of the present invention: the adjustment mechanism includes a moving rod, a groove is provided in the middle of one end of the moving rod close to the shell, the end of the needle away from the blade is inserted into the groove, the end of the moving rod away from the needle is horizontally slidably connected to a balance rod, the end of the balance rod away from the moving rod is fixedly connected to the inner cavity side wall of the installation cavity, and an adapter groove is provided on the outer wall of the needle away from the moving rod.

[0013] As a further solution of the present invention: a balancing groove is provided on the outer wall of the moving rod on the side close to the needle, a straight groove is provided on one end of the balancing groove, and an oblique groove is provided on the end of the straight groove away from the balancing groove; the driving rod is slidably matched with the balancing groove, the oblique groove and the straight groove; an elastic block is vertically slidably connected at the connection between the balancing groove and the oblique groove, and a slope is provided on the side of the elastic block close to the oblique groove.

[0014] As a further solution of the present invention: a driven gear is fixedly connected to the side of the sleeve away from the outer shell, an incomplete gear is arranged below the driven gear, the incomplete gear and the driven gear are meshed with each other, a servo motor is transmission-connected to the bottom of the inner cavity of the installation cavity, and the output end of the servo motor is fixedly connected to the incomplete gear.

[0015] As a further solution of the present invention: a symmetrical limit block is fixedly connected to one end of the inner cavity of the housing away from the driven gear, a symmetrical guide groove is provided on the outer wall of the insertion rod, a clamping groove is provided in the middle of one side of the guide groove close to the rotating drum, and the clamping groove is clamped with the limit block.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] By providing an adaptor groove, the fixing effect of the needle on the lesion can be improved, and the cut part can be prevented from being separated from the outer wall of the needle during the continuous cutting of the lesion. When the shell rotates 180° again to reset, the driving rod will enter the oblique groove from the connection between the straight groove and the oblique groove, and as the sleeve drives the driving rod to rotate, the moving rod drives the needle and the cut lesion to move away from the position of the blade synchronously. Through the shell that rotates 180° intermittently and the cooperation of the needle that moves horizontally toward the direction of the blade after the shell rotates 180°, after the shell and the shell complete the cutting of the lesion, the needle is immediately inserted and fixed to the lesion, that is, the continuous cutting ability of the shell and the shell is improved, and the storage capacity of the shell for the lesion part is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the structure of the installation cavity in the present invention.

[0020] Figure 3 It is a schematic diagram of the internal structure of the shell in the present invention.

[0021] Figure 4 For the present invention Figure 2 Schematic diagram of the structure of area A.

[0022] Figure 5 It is a structural schematic diagram of the annular groove in the present invention.

[0023] Figure 6 For the present invention Figure 5 Schematic diagram of the structure of area B.

[0024] Figure 7 It is a schematic diagram of the structure of the ratchet in the present invention.

[0025] Figure 8 It is a schematic diagram of the internal structure of the casing in the present invention.

[0026] Fig. 9 It is a structural schematic diagram of the moving rod in the present invention.

[0027] Fig.10 It is a structural schematic diagram of the straight slot in the present invention.

[0028] Fig.11 It is a schematic diagram of the structure of the driving mechanism in the present invention.

[0029] Fig.12 It is a schematic diagram of the structure of the elastic card block in the present invention.

[0030] In the figure: 1. handle; 2. shell; 3. shell; 4. blade; 5. rotating ring; 6. needle; 7. adapter groove; 8. fixing ring; 9. rotating drum; 10. insertion rod; 11. guide groove; 12. card slot; 13. ratchet; 14. arc-shaped inclined groove; 15. one-way card plate; 16. slide groove; 17. driven rod; 18. connecting rod; 19. L-shaped rod; 20. sleeve; 21. limit block; 22. moving rod; 23. balance rod; 24. driving rod; 25. balance groove; 26. inclined groove; 27. straight groove; 28. traction rope; 29. ​​pressure plate; 30. servo motor; 31. incomplete gear; 32. driven gear; 33. installation cavity; 34. annular groove; 35. elastic card block. DETAILED DESCRIPTION

[0031] See also Figure 1-3 In an embodiment of the present invention, a medical shaver device for facilitating sampling comprises a handle 1, a shell 2 is inserted into one side of the handle 1, a shell 3 is fitted in the inner cavity of the shell 2, a lancet 6 is slidably connected to the middle of the inner cavity of the shell 3, a mounting cavity 33 is provided on the side of the inner cavity of the handle 1 close to the outer cavity 2, an adjustment mechanism for driving the lancet 6 to move horizontally is slidably provided in the middle of the inner cavity of the mounting cavity 33, a driving mechanism for driving the adjusting mechanism to move horizontally is provided on the side of the inner cavity of the mounting cavity 33 away from the outer cavity 2, the driving mechanism comprises a sleeve shell 20, a driving rod 24 is fixedly connected to the middle of the inner cavity of the sleeve shell 20, the lower end of the driving rod 24 is slidably connected to the outer wall of the adjusting mechanism, when the driving mechanism rotates clockwise, the sleeve shell 20 drives the driving rod 24 to rotate synchronously, and drives the adjusting mechanism horizontally close to the position of the outer cavity 2 through the sliding cooperation between the driving rod 24 and the outer wall of the adjusting mechanism.

[0032] See also Figure 2A fixing ring 8 is fixedly connected to the inner cavity side wall of the end of the shell 3 near the handle 1, and an insertion rod 10 is fixedly connected to the middle of the end of the fixing ring 8 near the handle 1. A rotating drum 9 is rotatably connected to the outer wall of the insertion rod 10 near the fixing ring 8. The outer shell 2 and the shell 3 are both plug-in connected to the handle 1. A plug-in groove for plugging with the outer shell 2 and the shell 3 is provided in the middle of the side of the handle 1 near the shell 2. An annular groove 34 is provided on the side of the inner cavity of the handle 1 near the shell 2. A ratchet 13 is rotatably connected to the inner cavity of the annular groove 34. A rotating ring 5 is fixedly connected to the side of the ratchet 13 near the shell 2. The rotating ring 5 is away from the outer shell 2. One end of the ratchet 13 extends out of the side wall of the handle 1 and is rotatably connected to the handle 1. The ratchet 13 can be driven to rotate synchronously by rotating the rotating ring 5. A one-way clamp 15 is rotatably connected to the middle upper part of the inner cavity of the annular groove 34. The middle upper end of the one-way clamp 15 and the top of the inner cavity of the annular groove 34 are elastically connected by a spring. During the clockwise rotation of the ratchet 13, the one-way clamp 15 will be lifted up by the teeth of the ratchet 13 and rotate upward. When the ratchet 13 moves relatively to the gap between the teeth of the ratchet 13, the one-way clamp 15 will be reset under the action of the elastic force, thereby limiting and fixing the ratchet 13 again.

[0033] See also Figure 5-Figure 7The side wall of the ratchet 13 is provided with an arc-shaped inclined groove 14 which is centrally symmetrical about the center position of the ratchet 13. The inner cavity of the arc-shaped inclined groove 14 is slidably connected with a driven rod 17. When the ratchet 13 rotates with the rotating ring 5, the arc-shaped inclined groove 14 will be driven to rotate synchronously, and the driven rod 17 will slide in the inner cavity of the arc-shaped inclined groove 14. The end of the arc-shaped inclined groove 14 away from the vertical plane where the one-way clamping plate 15 is located is closer to the center position of the ratchet 13, that is, when the arc-shaped inclined groove 14 rotates with the rotating ring 5, the driven rod 17 will slide in the inner cavity of the arc-shaped inclined groove 14. As the ratchet 13 rotates clockwise, the driven rod 17 moves relatively from the end of the inner cavity of the arc-shaped inclined groove 14 away from the center of the ratchet 13 to the end of the arc-shaped inclined groove 14 close to the center of the ratchet 13, thereby driving the driven rod 17 to move vertically downward. A connecting rod 18 is fixedly connected to the middle part of the lower end of the driven rod 17, and the connecting rod 18 is slidably matched with the inner cavity of the ratchet 13, that is, during the rotation of the ratchet 13, the connecting rod 18 will only move vertically downward with the driven rod 17, and will not move with the ratchet. 13 rotates, and an L-shaped rod 19 is fixedly connected to the middle part of the lower end of the connecting rod 18. The L-shaped rod 19 is vertically slidably connected to the inner cavity of the annular groove 34 near the side of the rotating drum 9, so that the connecting rod 18 and the driven rod 17 can only move in the vertical direction with the L-shaped rod 19. The L-shaped rod 19 is composed of a horizontal block and a vertical block. In the process of the L-shaped rod 19 moving vertically downward with the connecting rod 18, the lower end of the horizontal block will contact the end of the shell 2 away from the blade 4, and the lower end of the vertical block will contact the outer wall of the rotating drum 9. The symmetrical horizontal blocks are close to the outer wall of the shell 2, so that the outer wall of the shell 2 is clamped and fixed, and the symmetrical vertical blocks are close to the outer wall of the rotating drum 9, so that the rotating drum 9 can be clamped and fixed, and the rotating drum 9 is clamped and fixed by the vertical blocks. The rotating drum 9 is rotatably connected with the shell 3, so that the shell 3 can be fixed in the horizontal direction without affecting the rotation of the shell 3.

[0034] See also Figure 4A slide groove 16 is provided on the upper part of the handle 1 near the outer shell 2. The slide groove 16 is located above the one-way card plate 15. A pressure plate 29 is horizontally slidably connected to the inner cavity of the slide groove 16. The end of the pressure plate 29 away from the outer shell 2 is elastically connected to the inner cavity side wall of the slide groove 16 through a spring. A traction rope 28 is fixedly connected to the middle part of the inner cavity of the pressure plate 29 away from the outer shell 2. The end of the traction rope 28 away from the pressure plate 29 passes through the bottom of the inner cavity of the slide groove 16 and enters the inner cavity of the annular groove 34, and is fixedly connected to the middle part of the upper end of the one-way card plate 15. When the outer shell 2 and the shell 3 need to be disassembled, the pressure plate 29 can be pushed, so that the pressure plate 29 The traction rope 28 is driven to move horizontally, thereby pulling the one-way clamping plate 15 to rotate upward, so that the one-way clamping plate 15 is separated from the teeth of the ratchet 13, thereby releasing the limiting effect on the ratchet 13. At this time, the rotating ring 5 can be rotated counterclockwise to drive the ratchet 13 to rotate counterclockwise, thereby driving the driven rod 17 to move vertically upward through the arc-shaped inclined groove 14, and then driving the connecting rod 18 and the L-shaped rod 19 to move vertically upward, so that the symmetrical horizontal blocks are separated from the outer wall of the outer shell 2, and the symmetrical vertical blocks are separated from the outer wall of the rotating drum 9, thereby releasing the limiting and fixing effect on the outer shell 2 and the shell 3, so that it is convenient to disassemble the outer shell 2 and the shell 3 for cleaning and maintenance.

[0035] See also Figure 8-Figure 10 as well as Fig.12The adjusting mechanism includes a moving rod 22. A groove is provided in the middle of one end of the moving rod 22 close to the housing 2. The end of the needle 6 away from the blade 4 is inserted into the groove. A magnet is fixedly connected to the side wall of the inner cavity of the groove. The needle 6 is adsorbed and fixed by the magnet, so that the needle 6 moves synchronously with the moving rod 22. When the moving rod 22 moves horizontally, it drives the needle 6 to move horizontally synchronously. The end of the moving rod 22 away from the needle 6 is horizontally slidably connected to a balance rod 23. The balance rod 23 is away from the needle 6. One end of the moving rod 22 is fixedly connected to the inner cavity side wall of the installation cavity 33, the outer wall of the balancing rod 23 is sleeved with a spring, and a balancing groove 25 is provided on the outer wall of the moving rod 22 near the needle 6. The balancing groove 25 is semicircular, and a straight groove 27 is provided at one end of the balancing groove 25, and an oblique groove 26 is provided at the end of the straight groove 27 away from the balancing groove 25. The oblique groove 26 connects the end of the straight groove 27 away from the balancing groove 25 with the end of the balancing groove 25 away from the straight groove 27. The driving rod 24 is connected to the balancing groove 25 and the oblique groove 26. When the driving rod 24 moves to the connection between the balancing groove 25 and the straight groove 27, the moving rod 22 will be pushed by the elastic force to move horizontally in the direction of the housing 2 under the action of the elastic force until the driving rod 24 moves relatively to the connection between the straight groove 27 and the inclined groove 26. When the driving rod 24 moves to the inner cavity of the inclined groove 26, the moving rod 22 is pushed to move horizontally in the direction away from the housing 2. The connection between the balancing groove 25 and the inclined groove 26 is vertically slidably connected. The elastic block 35 has an inclined surface on one side of the elastic block 35 close to the inclined groove 26. When the driving rod 24 moves from the inner cavity of the inclined groove 26 to the inner cavity of the balancing groove 25, the driving rod 24 will squeeze the elastic block 35 downward and enter the inner cavity of the balancing groove 25. After the driving rod 24 enters the balancing groove 25, the elastic block 35 will bounce upward to block the driving rod 24, thereby preventing the moving rod 22 from entering the inner cavity of the inclined groove 26 again under the action of the elastic force.

[0036] See also Fig.11A driven gear 32 is fixedly connected to the side of the casing 20 away from the outer shell 2, and an incomplete gear 31 is arranged below the driven gear 32. The incomplete gear 31 and the driven gear 32 are meshed with each other. A servo motor 30 is transmission-connected to the bottom of the inner cavity of the installation cavity 33, and the output end of the servo motor 30 is fixedly connected to the incomplete gear 31, that is, when the servo motor 30 drives the incomplete gear 31 to rotate, the incomplete gear 31 will drive the driven gear 32 to rotate synchronously, thereby driving the casing 20 to rotate synchronously. , and the housing 20 will drive the driving rod 24 to rotate synchronously. After the teeth of the incomplete gear 31 and the driven gear 32 are separated, the driven gear 32 and the housing 20 will rotate 180° synchronously. At this time, the driving rod 24 will move from the connection between the balancing groove 25 and the inclined groove 26 to the connection between the balancing groove 25 and the straight groove 27. In this process, the driving rod 24 moves in the inner cavity of the balancing groove 25 so that the moving rod 22 remains stationary. After the driving rod 24 rotates 180°, it moves to the connection between the straight groove 27 and the balancing groove. At the connection of the balance groove 25, the moving rod 22 drives the needle 6 to move horizontally in a direction away from the servo motor 30, that is, the cooperation with the incomplete gear 31 and the driven gear 32 can make the shell 20 intermittently rotate 180 degrees. The end of the inner cavity of the shell 20 away from the driven gear 32 is fixedly connected with a symmetrical limit block 21. When the shell 3 is installed and fixed, the rotating cylinder 9 and the insertion rod 10 will be synchronously inserted into the middle of the inner cavity of the handle 1, and the outer wall of the insertion rod 10 is provided with a symmetrical guide groove 11. A card slot 12 is provided in the middle of one side of the guide groove 11 close to the rotating drum 9. After the insertion rod 10 is inserted into the inner cavity of the installation cavity 33 along with the rotating drum 9 and the shell 3, the limit block 21 will contact the guide groove 11, so that the side wall of the guide groove 11 contacts the outer wall of the limit block 21, guiding the position of the insertion rod 10, thereby ensuring that the limit block 21 can accurately enter the inner cavity of the card slot 12, so that when the shell 3 is installed, the limit block 21 can enter the card slot 12 more easily.

[0037] See also Figure 3During the rotation of the sleeve shell 20, the engagement of the limit block 21 with the card slot 12 drives the insertion rod 10 to rotate 180° synchronously, so that the shell 3 rotates 180°, so that the shell 3 moves relative to the shell 2 to complete the cutting of the lesion in the patient's body. After the shell 3 completes the cutting, the bottom of the shell 3 will block the blade 4 after rotation. At the same time, the needle 6 moves toward the direction of the blade 4 along with the moving rod 22, so that the needle 6 is inserted into the lesion located in the inner cavity of the shell 2 and the shell 3, so that the lesion is fixed by the needle 6, and in the process of the moving rod 22 driving the needle 6 to reset, the lesion is driven away from the position of the blade 4, so that the inner cavity space of the blade 4 is in a state of no matter, thereby facilitating the continuous cutting of the lesion, avoiding the need to pull the shell 2 out of the patient's body for many times when cutting a larger lesion, clean the lesion site located in the inner cavity of the blade 4, and then insert it into the patient's body again. The lesion is cut inside, and the outer wall of the thorn needle 6 is provided with an adapting groove 7. By providing the adapting groove 7, the fixing effect of the thorn needle 6 on the lesion can be improved, and the cut part is prevented from being separated from the outer wall of the thorn needle 6 during the continuous cutting of the lesion. When the shell 3 rotates 180° again to reset, the driving rod 24 will enter the inclined groove 26 from the connection between the straight groove 27 and the inclined groove 26, and as the sleeve 20 drives the driving rod 24 to rotate, the moving rod 22 drives the thorn needle 6 and the cut lesion to move away from the position of the blade 4 synchronously. Through the shell 3 that rotates 180° intermittently and the cooperation of the thorn needle 6 that moves horizontally toward the direction of the blade 4 after the shell 3 rotates 180°, after the shell 2 and the shell 3 complete the cutting of the lesion, the lesion is immediately plugged and fixed by the thorn needle 6, that is, the continuous cutting ability of the shell 2 and the shell 3 is improved, and the storage capacity of the shell 3 for the lesion part is improved.

Claims

1. A medical shaver for facilitating sampling, comprising a handle, characterized in that: A shell is inserted into one side of the handle, and the shell is fittedly arranged in the inner cavity of the shell, and a needle is slidably connected to the middle part of the inner cavity of the shell. An installation cavity is opened in the inner cavity of the handle close to the shell, and an adjustment mechanism for driving the needle to move horizontally is slidably arranged in the middle part of the inner cavity of the installation cavity, and a driving mechanism for driving the adjusting mechanism to move horizontally is arranged on the side of the inner cavity of the installation cavity away from the shell, and the driving mechanism comprises a sleeve, and a driving rod is fixedly connected to the middle part of the inner cavity of the sleeve, and the lower end of the driving rod is slidably connected to the outer wall of the adjusting mechanism, and when the driving mechanism rotates clockwise, the sleeve drives the driving rod to rotate synchronously, and drives the adjusting mechanism to move horizontally close to the position of the shell.

2. A medical shaver for sampling according to claim 1, characterized in that: A fixing ring is fixedly connected to the side wall of the inner cavity at one end of the shell near the handle, an insertion rod is fixedly connected to the middle part of the fixing ring at one end near the handle, and a rotating cylinder is rotatably connected to the outer wall of the insertion rod near the fixing ring. The outer shell and the shell are both plug-in connected to the handle, and a plug-in groove for matching the outer shell and the shell is provided in the middle part of the side of the handle near the shell, and an annular groove is provided on the side of the inner cavity of the handle near the shell.

3. A medical shaver for sampling according to claim 2, characterized in that: The inner cavity of the annular groove is rotatably connected to a ratchet, and a rotating ring is fixedly connected to the side of the ratchet close to the outer shell. The end of the rotating ring away from the ratchet extends out of the side wall of the handle and is rotatably connected to the handle. A one-way clamping plate is rotatably connected to the middle of the upper side of the inner cavity of the annular groove, and the middle of the upper end of the one-way clamping plate is elastically connected to the top of the inner cavity of the annular groove through a spring.

4. A medical shaver for sampling according to claim 3, characterized in that: The side wall of the ratchet is provided with an arc-shaped oblique groove which is centrally symmetrical about the center position of the ratchet; the inner cavity of the arc-shaped oblique groove is slidably connected to a driven rod; and the middle part of the lower end of the driven rod is fixedly connected to a connecting rod.

5. A medical shaver for sampling according to claim 4, characterized in that: The connecting rod is slidably matched with the inner cavity of the ratchet wheel, and an L-shaped rod is fixedly connected to the middle part of the lower end of the connecting rod. The L-shaped rod is vertically slidably connected to the inner cavity of the annular groove near the rotating drum.

6. A medical shaver for sampling according to claim 3, characterized in that: A slide groove is provided on the upper part of the handle close to the outer shell, and the slide groove is located above the one-way clamp. A pressure plate is horizontally slidably connected to the inner cavity of the slide groove, and a traction rope is fixedly connected to the middle part of the inner cavity of the pressure plate away from the outer shell. One end of the traction rope away from the pressure plate passes through the bottom of the inner cavity of the slide groove and enters the inner cavity of the annular groove, and is fixedly connected to the middle part of the upper end of the one-way clamp.

7. A medical shaver for sampling according to claim 1, characterized in that: The adjustment mechanism includes a moving rod, a groove is provided in the middle of one end of the moving rod close to the shell, the end of the needle away from the blade is inserted into the groove, the end of the moving rod away from the needle is horizontally slidably connected to a balance rod, the end of the balance rod away from the moving rod is fixedly connected to the inner cavity side wall of the installation cavity, and an adapter groove is provided on the outer wall of the needle away from the moving rod.

8. A medical shaver for sampling according to claim 7, characterized in that: A balancing groove is provided on the outer wall of the moving rod at a side close to the needle, a straight groove is provided at one end of the balancing groove, and an oblique groove is provided at the end of the straight groove away from the balancing groove. The driving rod is slidably matched with the balancing groove, the oblique groove and the straight groove. An elastic block is vertically slidably connected at the connection between the balancing groove and the oblique groove, and an inclined surface is provided on the side of the elastic block close to the oblique groove.

9. A medical shaver for sampling according to claim 7, characterized in that: A driven gear is fixedly connected to the side of the sleeve away from the outer shell, an incomplete gear is arranged below the driven gear, the incomplete gear and the driven gear are meshed with each other, a servo motor is transmission-connected to the bottom of the inner cavity of the installation cavity, and the output end of the servo motor is fixedly connected to the incomplete gear.

10. A medical shaver for sampling according to claim 9, characterized in that: A symmetrical limit block is fixedly connected to one end of the inner cavity of the sleeve away from the driven gear, and a symmetrical guide groove is opened on the outer wall of the insertion rod. A clamping groove is opened in the middle of one side of the guide groove close to the rotating drum, and the clamping groove is clamped with the limit block.

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