Operating instrument for spine surgery

Abstract

The utility model discloses a spine surgical operating instrument which comprises a handle part, a reamer rod and a reamer head, the front end of the handle part is connected with a handle inner sleeve, the handle inner sleeve is elastically sleeved with a handle outer sleeve, the handle inner sleeve and the handle outer sleeve are internally and jointly provided with an insertion groove matched with the reamer rod, and the reamer head is connected with the handle inner sleeve. An elastic hemisphere is elastically connected to the front side in the inserting groove, an annular groove matched with the elastic hemisphere is formed in the rear end of the reamer rod, and a sliding block is movably connected to the position, located in the annular groove, of the reamer rod in a sleeved mode. According to the utility model, the operation is simple, and the dismounting and mounting work of a product can be completed by only one hand; both the handle part and the handle jacket are provided with the anti-skid grooves, so that the anti-skid performance of the product is improved; the cost is reduced, and only the reamer rod needs to be replaced under the conditions that the reamer is abraded and the sharpness is insufficient.

Description

Technical Field

[0001] This utility model relates to the field of spinal surgical instruments, specifically to a spinal surgical instrument. Background Technology

[0002] Reamers in spinal surgical instruments are rotating tools with one or more cutting teeth for cutting away pre-drilled surfaces. Reamers are rotating finishing tools with straight or helical cutting edges.

[0003] The reamers of common spinal surgical instruments in the present technology are all one-piece designs. These reamers have the following disadvantages: inconvenient operation, high cost of use, inconvenient cleaning, and low safety. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a spinal surgery instrument in view of the shortcomings mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a spinal surgical instrument, including a handle, a reamer rod, and a reamer head. The front end of the handle is connected to an inner handle sleeve, and an outer handle sleeve is elastically fitted outside the inner handle sleeve. The inner handle sleeve and the outer handle sleeve are both provided with a slot for cooperating with the reamer rod. An elastic hemisphere is elastically connected to the front side of the slot. The rear end of the reamer rod is provided with an annular groove for cooperating with the elastic hemisphere. A sliding block is movably fitted onto the reamer rod at the position of the annular groove.

[0006] Furthermore, the handle portion is fitted with an anti-slip pad.

[0007] Furthermore, a first spring connected to the inner sleeve of the handle is provided inside the handle sleeve, and a second spring connected to the elastic hemisphere is provided inside the handle sleeve.

[0008] Furthermore, the cutting edge of the reamer head is set to be blunt.

[0009] The advantages of this utility model of a spinal surgical instrument compared with the prior art are: 1. Simple operation, the disassembly and installation of the product can be completed with just one hand;

[0010] 2. Excellent anti-slip properties: Both the handle and the handle cover have anti-slip grooves to improve the product's anti-slip performance;

[0011] 3. Reduced costs: When the reamer wears out or loses its sharpness, only the reamer handle needs to be replaced. The handle can be reused.

[0012] 4. It can be installed in four directions; the reamer rod can be installed in four directions: front, back, left, and right.

[0013] 5. Easy to clean: The handle and shaft of the pliers can be detached for separate cleaning, making it easier to disinfect and avoid cross-infection;

[0014] 6: Safety: All sharp edges are blunted to prevent secondary damage during use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a spinal surgery instrument according to this utility model.

[0016] Figure 2 This is a schematic diagram of the structure of a spinal surgery instrument according to this utility model.

[0017] Figure 3 This is a schematic diagram of the structure of a spinal surgery instrument according to this utility model.

[0018] As shown in the figure: 1. Handle handle; 2. Handle inner sleeve; 3. Handle outer sleeve; 4. Reamer rod; 5. Reamer head; 6. Anti-slip pad; 7. Slot; 8. First spring; 9. Elastic hemisphere; 10. Ring groove; 11. Sliding block; 12. Second spring. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings.

[0020] Combined with appendix Figure 1-3 A spinal surgical instrument includes a handle 1, a reamer rod 4, and a reamer head 5. The reamer head 5 has a blunt cutting edge. An anti-slip pad 6 is sleeved on the outside of the handle 1. An inner handle sleeve 2 is connected to the front end of the handle 1. An outer handle sleeve 3 is elastically sleeved on the outside of the inner handle sleeve 2. Both the inner and outer handle sleeves 2 and 3 have a slot 7 for engaging the reamer rod 4. An elastic hemisphere 9 is elastically connected to the front side of the slot 7. The rear end of the reamer rod 4 has an annular groove 10 that engages with the elastic hemisphere 9. A sliding block 11 is movably sleeved on the reamer rod 4 at the annular groove 10. The outer handle sleeve 3 is connected to a component that interacts with the inner handle sleeve. The first spring 8 is connected to the handle sleeve 3, and the second spring 12 is connected to the elastic hemisphere 9. Specifically, when the handle sleeve 3 is pushed and the reamer rod 4 is inserted, the elastic hemisphere 9 reaches the annular groove 10 of the reamer rod 4. When the handle sleeve 3 is released, the first spring 8 drives the handle sleeve 3 and the reamer rod 4 to be fixedly locked in the slot 7 inside the handle handle 1 and the handle inner sleeve 2. When you want to disassemble, push the handle sleeve 3, the elastic hemisphere 9 is compressed, and then it protrudes to the front of the sliding block 11, which drives the sliding block 11 to slide to the rear end, so that the sliding block 11 covers the annular groove 10. Release the handle sleeve 3, and the reamer rod 4 can be taken out for operation while compressing the elastic hemisphere 9.

[0021] In practice, the following steps are taken: 1. Installation: Push the handle sleeve 3 upwards to insert the reamer rod 4. After releasing the handle sleeve 3, lock the reamer rod 4 to complete the installation.

[0022] 2: Disassembly: Push the handle sleeve 3 upwards to remove the reamer bar 4.

[0023] 3: Activity: Rotate the handle 1, which will cause the reamer rod 4 and the reamer head 5 to rotate together.

[0024] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A spinal surgical instrument, comprising a handle (1), a reamer rod (4), and a reamer head (5), characterized in that: The handle (1) is connected to the front end of the handle inner sleeve (2), and the handle inner sleeve (2) is elastically sleeved with the handle outer sleeve (3). The handle inner sleeve (2) and the handle outer sleeve (3) are both provided with a slot (7) for cooperating with the reamer rod (4). The front side of the slot (7) is elastically connected with an elastic hemisphere (9). The rear end of the reamer rod (4) is provided with an annular groove (10) for cooperating with the elastic hemisphere (9). The reamer rod (4) is movably sleeved with a sliding block (11) at the position of the annular groove (10).

2. The spinal surgical instrument according to claim 1, characterized in that: The handle (1) is fitted with an anti-slip pad (6) on its outside.

3. The spinal surgical instrument according to claim 1, characterized in that: The handle outer sleeve (3) is connected to a first spring (8) that is connected to the handle inner sleeve (2), and the handle outer sleeve (3) is connected to a second spring (12) that is connected to the elastic hemisphere (9).

4. The spinal surgical instrument according to claim 1, characterized in that: The cutting edge of the reamer head (5) is set to be blunt.

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