Endoscopic spine grinding head with telescopic and bendable sheath

Abstract

The utility model discloses an endoscopic spine grinding head of a telescopic bending sheath, which comprises a handle, one end of the handle is fixedly connected with a sleeve, a straight pipe is arranged in one end of the sleeve, a rotating rod is arranged in the sleeve and the straight pipe, one end of the rotating rod is fixedly connected with a grinding head, and the other end of the rotating rod is fixedly connected with the handle. A sliding groove is formed in the inner side wall of the straight pipe, a sliding block is slidably connected into the sliding groove, a protective sheath is fixedly connected to one end of the sliding block and is of a bent structure, an arc-shaped groove is formed in the surface of one side of the protective sheath, a cavity is formed in the handle, a driving mechanism is arranged in the cavity, and a pushing assembly is arranged on the surface of one side of the sliding block. One end of the pushing assembly penetrates through the handle and is connected with the driving mechanism. When the grinding head is used, surrounding nerve soft tissues can be pushed away, the situation that the nerve soft tissues surround the grinding head and damage the grinding head is avoided, the grinding space of the grinding head is conveniently adjusted according to needs, and the effective working area of the grinding head is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to an endoscopic spinal grinding head with a retractable and bendable sheath. Background Art

[0002] During spinal surgery, an electric grinding head, passing through the instrument channel of a spinal endoscope, grinds bone. This is widely used in minimally invasive spinal surgery, offering minimal trauma and high efficiency. Existing grinding heads utilize a handle powered by a micromotor to rotate at high speed, with the cutting edge or diamond abrasive grains on the head grinding bone tissue.

[0003] Currently, existing endoscopic spinal grinding heads are generally equipped with a straight tube and a protective sheath. Usually, the protective sheath is set at one end of the branch tube on one side of the grinding head, and the existing sheaths are generally fixedly installed on the straight tube protective sheath, and it is inconvenient to adjust the sheath. Therefore, when in use, the surrounding nerve soft tissue exists close to the grinding head, thereby causing certain damage to the nerve soft tissue. Secondly, the fixed protective sheath will block part of the grinding head, thereby reducing the grinding space of the grinding head. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides an endoscopic spinal grinding head with a retractable and curved sheath, which solves the problem that the protective sheath of the traditional endoscopic spinal grinding head is inconvenient to adjust. Therefore, during use, the surrounding nerve soft tissue can be pushed away and the nerve soft tissue can be prevented from being surrounded by the grinding head and causing damage to it. Secondly, it is convenient to adjust the grinding space of the grinding head according to needs and increase the effective working area of ​​the grinding head.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an endoscopic spinal grinding head with a retractable and bendable sheath, comprising a handle, one end of the handle is fixedly connected to a sleeve, and a straight tube is installed inside one end of the sleeve, a rotating rod is provided inside the sleeve and the straight tube, and one end of the rotating rod is fixedly connected to the grinding head, the other end of the rotating rod is fixedly connected to the handle, a sliding groove is provided on the inner side wall of the straight tube, and a slider is slidably connected inside the sliding groove, one end of the slider is fixedly connected to a protective sheath, and the protective sheath is a curved structure, an arc groove is provided on one side surface of the protective sheath, a cavity is provided inside the handle, and a driving mechanism is provided inside the cavity, a pushing component is provided on one side surface of the slider, and one end of the pushing component passes through the handle and is connected to the driving mechanism.

[0006] Preferably, the pushing assembly includes a mounting ring, and a thin steel cable is fixedly connected to the side surface of the mounting ring, and one end of the thin steel cable passes through the handle and is connected to the driving mechanism.

[0007] Preferably, the driving mechanism includes a gear rod, and the side surface of one end of the gear rod is meshed with a gear, the upper surface of the gear is fixedly connected to a drive shaft, and the upper end of the drive shaft is fixedly connected to an adjustment knob through the handle, and the drive shaft is rotatably connected to the handle, and one end of the gear rod is fixedly connected to one end of the thin steel cable through a push plate.

[0008] Preferably, a limiting groove is provided on the inner wall of the cavity, and a limiting block is slidably connected inside the limiting groove, and the upper end of the limiting block is fixedly connected to the lower surface of the gear rod.

[0009] Preferably, a limiting frame is sleeved on the side surface of the protective sheath, and both ends of the limiting frame are fixedly connected to the inner wall of the straight tube through a cross bar.

[0010] Preferably, a mounting groove is provided on the outer side of the mounting ring, and one side surface of the mounting groove is fixedly connected to the slider, and the interior of the mounting groove is connected to the mounting ring via bolts.

[0011] The utility model provides a microscopic spinal grinding head with a retractable and bendable sheath. Compared with the existing technology, it has the following advantages:

[0012] 1. The protective sheath and pushing assembly connected by the slide block inside the straight tube cooperate with the adjusting knob, gear rod and driving shaft in the driving assembly, so that the doctor can conveniently adjust the length of the protective sheath during use, push away the nerve soft tissue around the grinding head, and avoid the nerve soft tissue surrounding the grinding head and causing damage to it. Secondly, it is convenient to adjust the grinding space of the grinding head according to needs, and increase the effective working area of ​​the grinding head.

[0013] 2. The gear rod can be limited by the limiting groove inside the cavity and the limiting block slidably connected inside the limiting groove, thereby improving the stability of the gear rod and further improving the accuracy of the doctor's operation of the protective sheath. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is an enlarged structural diagram of point A in the utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the sleeve and straight pipe in the utility model;

[0017] Figure 4 for Figure 3 Schematic diagram of the enlarged structure at B in the middle;

[0018] Figure 5 This is a schematic diagram of the internal structure of the handle in the present utility model.

[0019] In the figure: 1. handle; 101. rotating rod; 102. grinding head; 2. sleeve; 3. straight tube; 4. adjusting knob; 5. protective sheath; 6. limit frame; 7. thin steel cable; 8. slide; 801. slider; 802. mounting groove; 803. mounting ring; 804. bolt; 9. cavity; 901. limit groove; 902. limit block; 903. gear rod; 905. gear; 906. push plate; 907. drive shaft. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only 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 ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-5 The utility model provides a technical solution: an endoscopic spinal grinding head with a retractable and bendable sheath, comprising a handle 1, one end of the handle 1 is fixedly connected to a sleeve 2, and a straight tube 3 is installed inside one end of the sleeve 2, a rotating rod 101 is provided inside the sleeve 2 and the straight tube 3, and one end of the rotating rod 101 is fixedly connected to the grinding head 102, the other end of the rotating rod 101 is fixedly connected to the handle 1, a sliding groove 8 is provided on the inner side wall of the straight tube 3, and a slider 801 is slidably connected to the inside of the sliding groove 8, one end of the slider 801 is fixedly connected to a protective sheath 5, and the protective sheath 5 is a curved structure, an arc groove is provided on one side surface of the protective sheath 5, a cavity 9 is provided inside the handle 1, and a driving mechanism is provided inside the cavity 9, a pushing component is provided on one side surface of the slider 801, and one end of the pushing component passes through the handle 1 and is connected to the driving mechanism.

[0022] As a technical optimization solution of the present invention, the pushing component includes a mounting ring 803, and a thin steel cable 7 is fixedly connected to the side surface of the mounting ring 803. One end of the thin steel cable 7 passes through the handle 1 and is connected to the driving mechanism. The driving mechanism can adjust the protective sheath 5 conveniently through the thin steel cable 7 and the mounting ring 803, thereby facilitating the doctor to adjust the length of the protective sheath 5 according to the location of the patient's lesion.

[0023] As a technical optimization solution of the present invention, the driving mechanism includes a gear rod 903, and the side surface of one end of the gear rod 903 is meshedly connected to the gear 905, the upper surface of the gear 905 is fixedly connected to the driving shaft 907, and the upper end of the driving shaft 907 passes through the handle 1 and is fixedly connected to the adjusting knob 4, and the driving shaft 907 is rotatably connected to the handle 1, and one end of the gear rod 903 is fixedly connected to one end of the thin steel cable 7 through the push plate 906. The adjusting knob 4, the driving shaft 907, the gear 905 and the gear rod 903 in the driving mechanism can facilitate the staff to adjust the protective sheath 5, thereby using the protective sheath 5 to push away the nerve soft components around the grinding head 102.

[0024] As a technical optimization solution of the present invention, a limiting groove 901 is provided on the inner wall of the cavity 9, and the internal sliding connection of the limiting groove 901 is connected to the limiting block 902, and the upper end of the limiting block 902 is fixedly connected to the lower surface of the gear rod 903. The gear rod 903 can be limited by the limiting block 902 and the limiting groove 901, and the stability of the gear rod 903 is improved, while further improving the accuracy of the doctor's operation of the protective sheath 5.

[0025] As a technical optimization solution of the present invention, a limit frame 6 is provided on the side surface of the protective sheath 5, and the two ends of the limit frame 6 are fixedly connected to the inner wall of the straight tube 3 through a cross bar. The protective sheath 5 can be limited by the limit frame 6 and the cross bar, so that the protective sheath 5 is in a flat shape inside the straight tube 3.

[0026] As a technical optimization solution of the present invention, a mounting groove 802 is provided on the outer side of the mounting ring 803, and one side surface of the mounting groove 802 is fixedly connected to the slider 801. The inside of the mounting groove 802 is connected to the mounting ring 803 through a bolt 804. The mounting ring 803 can be easily disassembled through the bolt 804, thereby facilitating the replacement of the protective sheath 5.

[0027] When the present invention is in use, the doctor first sends the grinding head 102 to the patient's lesion through the sleeve 2 and the straight tube 3 at one end of the handle 1, and then observes the patient's lesion and the grinding head 102 through the endoscope. When there is nerve soft tissue around the grinding head 102, the doctor rotates the adjustment knob 4 to drive the drive shaft 907 and the gear 905 to rotate. At this time, the gear 905 will drive the gear rod 903 to move, so that the gear rod 903 pushes the thin steel cable 7 to move through the push plate 906. At this time, the thin steel cable 7 is pushed by the mounting ring 803 and the mounting groove 802. The slider 801 and the protective sheath 5 move, and then one end of the protective sheath 5 will pass through the limit frame 6 and move out of the interior of the straight tube 3. After that, the protective sheath 5 will push aside the soft nerve tissue around the grinding head 102. At this time, the doctor can use the grinding head 102 to grind the lesion. Since the protective sheath 5 is curved, it will rise after being pushed out of the interior of the straight tube 3, thereby being able to push aside a larger space for the surrounding soft tissue and making it more convenient for the grinding head 102 to grind. At the same time, it increases the effective grinding space of the grinding head 102, further improving the efficiency of the doctor's operation.

[0028] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0029] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations. The phrase "includes an element defined by..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A microscopic spinal grinding head with a retractable and bendable sheath, comprising a handle (1), characterized in that: One end of the handle (1) is fixedly connected to a sleeve (2), and a straight tube (3) is installed inside one end of the sleeve (2), a rotating rod (101) is provided inside the sleeve (2) and the straight tube (3), and one end of the rotating rod (101) is fixedly connected to a grinding head (102), and the other end of the rotating rod (101) is fixedly connected to the handle (1), an inner side wall of the straight tube (3) is provided with a sliding groove (8), and a slider (801) is slidably connected inside the sliding groove (8), one end of the slider (801) is fixedly connected to a protective sheath (5), and the protective sheath (5) is a curved structure, and an arc groove is provided on one side surface of the protective sheath (5), a cavity (9) is provided inside the handle (1), and a driving mechanism is provided inside the cavity (9), a pushing component is provided on one side surface of the slider (801), and one end of the pushing component passes through the handle (1) and is connected to the driving mechanism.

2. The endoscopic spinal grinding head with a retractable and bendable sheath according to claim 1, characterized in that: The pushing assembly comprises a mounting ring (803), and a thin steel cable (7) is fixedly connected to the side surface of the mounting ring (803), and one end of the thin steel cable (7) passes through the handle (1) and is connected to the driving mechanism.

3. The endoscopic spinal grinding head with a retractable and bendable sheath according to claim 1, characterized in that: The driving mechanism includes a gear rod (903), and one end side surface of the gear rod (903) is meshedly connected to a gear (905), the upper surface of the gear (905) is fixedly connected to a driving shaft (907), and the upper end of the driving shaft (907) passes through the handle (1) and is fixedly connected to an adjusting knob (4), and the driving shaft (907) is rotatably connected to the handle (1), and one end of the gear rod (903) is fixedly connected to one end of a thin steel cable (7) through a push plate (906).

4. The endoscopic spinal grinding head with a retractable and bendable sheath according to claim 1, characterized in that: A limiting groove (901) is provided on the inner wall of the cavity (9), and the interior of the limiting groove (901) is slidably connected to a limiting block (902), and the upper end of the limiting block (902) is fixedly connected to the lower surface of the gear rod (903).

5. The endoscopic spinal grinding head with a retractable and bendable sheath according to claim 1, characterized in that: A limiting frame (6) is sleeved on the side surface of the protective sheath (5), and both ends of the limiting frame (6) are fixedly connected to the inner wall of the straight tube (3) through a cross bar.

6. The endoscopic spinal grinding head with a retractable and bendable sheath according to claim 2, characterized in that: The outer side of the mounting ring (803) is provided with a mounting groove (802), and one side surface of the mounting groove (802) is fixedly connected to the slider (801), and the interior of the mounting groove (802) is connected to the mounting ring (803) via a bolt (804).

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