Soft tissue reamer for orthopedic surgery

Abstract

The utility model discloses a soft tissue reamer for orthopedic surgery, which comprises a handle, an extension rod and a reamer head, a positioning hole is arranged on the extension rod, the reamer head comprises a reamer head body and a reaming piece, a first cutting edge and a second cutting edge are arranged on the reaming piece, the first cutting edge is connected with the second cutting edge, the first cutting edge is arranged on the side edge of the reaming piece, and the second cutting edge is arranged on the side edge of the reaming piece. The second cutting edge is arranged at the bottom of the mincing piece, and the tool bit body and the mincing piece are of an integrally-formed structure. Soft tissue is pressed through the arranged reamer head, then the handle is rotated, the soft tissue is driven by the reamer head to rotate and is wound on the reamer head, and after a certain winding force is achieved, the soft tissue is cut off by the reaming piece on the reamer head, and then the reaming piece is matched with other surgical instruments to clean out the fractured soft tissue. Compared with a mode of removing through a scraper, the device can hook the soft tissue easily when removing the soft tissue, the cleaning efficiency is higher, the convenience is better, and the operation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a soft tissue reamer for orthopedic surgery. Background Art

[0002] In routine orthopedic surgery, it is usually necessary to remove the soft tissue between bone joints. The current removal method mostly uses a scraper or removes excess soft tissue. However, the scraper blade used in the prior art is a sheet-like structure, which is not easy to get caught in the soft tissue when cleaning, resulting in difficulty in removal, which increases the time and difficulty of the operation. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] The technical problem to be solved by the utility model is that the blade of the scraper used in the prior art is a sheet-like structure, which is not easy to get caught on the soft tissue when cleaning it, resulting in difficulty in cleaning, thus increasing the time and difficulty of the operation.

[0005] (II) Technical solution

[0006] To solve the above problems, the utility model provides the following technical solutions: comprising a handle, an extension rod and a reamer head, the extension rod is also provided with a positioning hole, and the extension rod comprises a first rod body, a second rod body and an extension piece, the positioning hole passes through the handle, the extension rod and the reamer head, the reamer head comprises a cutter head body and a twisted slice, the twisted slice is provided with a first cutting edge and a second cutting edge, the first cutting edge is connected to the second cutting edge, the first cutting edge is arranged on the side of the twisted slice, the second cutting edge is arranged at the bottom of the twisted slice, the cutter head body and the twisted slice are an integrally formed structure, and the twisted slice is provided with a plurality of groups of circular arrays arranged on the cutter head body.

[0007] Furthermore, the reamer head further comprises a threaded connection column, and the end of the second rod body is further provided with a threaded hole matching with the threaded connection column.

[0008] Furthermore, a side of the twisted slice close to the positioning hole is also provided with a serrated edge.

[0009] Furthermore, the upper portion of the handle is provided with arc-shaped pits for improving the grip feel, and a group of arc-shaped pits are arranged symmetrically on the handle.

[0010] Furthermore, an anti-slip strip is provided at the bottom of the handle to prevent slipping, and a plurality of anti-slip strips are provided and evenly arranged on the handle.

[0011] Furthermore, one end of the extension rod is connected to the first rod body by a threaded connection, and the other end is connected to an end of the second rod body away from the reamer head by a threaded connection, and the first extension rod is fixedly connected to the handle.

[0012] (III) Beneficial effects

[0013] The beneficial effect of the utility model is that the soft tissue is pressed by the reamer head, and then the handle is rotated, the soft tissue is driven to rotate and wrapped around the reamer head through the reamer head, and when a certain wrapping force is reached, the reamer head cuts off the soft tissue and then cooperates with other surgical instruments to clean out the cut soft tissue. Compared with the method of using a scraper to remove the soft tissue, the device is easy to hook the soft tissue when removing the soft tissue, the cleaning efficiency is higher, the convenience is better, and the efficiency of the operation is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the utility model;

[0015] Figure 2 It is an exploded view of the main body of the utility model;

[0016] Figure 3 This is a structural schematic diagram of the side reamer head of the utility model;

[0017] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0018] In the figure: 1-handle, 2-extension rod, 3-reamer head, 4-positioning hole, 5-arc-shaped pit, 6-anti-slip strip;

[0019] 2a-first rod body, 2b-second rod body, 2c-extension piece, 2d-threaded hole;

[0020] 3a-cutter body, 3b-reamer slice, 3c-first cutting edge, 3d-second cutting edge, 3e-threaded connecting column, 3f-toothed edge. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figures 1 to 4A soft tissue reamer for orthopedic surgery comprises a handle 1, an extension rod 2 and a reamer head 3. The extension rod 2 is also provided with a positioning hole 4, which penetrates the handle 1, the extension rod 2 and the reamer head 3. The reamer head 3 comprises a head body 3a and a twisted slice 3b mainly used for removing soft tissue. The twisted slice 3b is provided with a first cutting edge 3c and a second cutting edge 3d, the first cutting edge 3c is connected to the second cutting edge 3d, the first cutting edge 3c is arranged on the side of the twisted slice 3b, and the second cutting edge 3d is arranged at the bottom of the twisted slice 3b. The head body 3a and the twisted slice 3b are an integrally formed structure, and the twisted slice 3b is arranged in a circular array on the head body 3a. The soft tissue is pressed by the set reamer head 3, and then the handle 1 is rotated, and the soft tissue is driven to rotate and wound on the reamer head 3 by the reamer head 3. When a certain winding force is reached, the twisted slice 3b on the reamer head 3 cuts off the soft tissue and then cooperates with other surgical instruments to clean up the cut soft tissue. Compared with the method of removing with a scraper, the present device is easier to hook the soft tissue when removing the soft tissue, which is more efficient and convenient, and improves the efficiency of the operation. The side of the slice 3b close to the positioning hole 4 is also provided with a serrated edge 3f that can hook the soft tissue. The positioning hole 4 is set to facilitate the insertion of the bone guide pin for easy positioning.

[0023] Specific implementation one:

[0024] The reamer head 3 also includes a threaded connection column 3e, and the end of the second rod body 2b is also provided with a threaded hole 2d that matches the threaded connection column 3e. When it is necessary to replace the reamer head 3 of different specifications, the connection between the threaded connection column 3e and the threaded hole 2d can be loosened to achieve the disassembly and replacement of the reamer head. Similarly, if the reamer head 3 is damaged or worn and needs to be discarded and replaced, such a design can replace the reamer head 3 separately, avoiding the need to replace the entire device, thereby reducing the cost of use.

[0025] Embodiment 2:

[0026] The upper part of the handle 1 is provided with an arc-shaped pit 5 for improving the grip, and the arc-shaped pit 5 is provided with a group of left-right symmetrical arrangements on the handle 1. The bottom of the handle 1 is provided with an anti-slip strip 6 for preventing slipping, and a plurality of anti-slip strips 6 are provided and evenly arranged on the handle 1. The design of the arc-shaped pit 5 improves the gripping feeling of medical staff during surgery, and at the same time, the arc-shaped pit 5 also improves the gripping stability due to its arc-shaped pit shape, and at the same time, the designed anti-slip strip 6 increases the gripping stability, which helps the smooth implementation of the surgery.

[0027] Embodiment three:

[0028] The extension rod 2 includes a first rod body 2a, a second rod body 2b and an extension piece 2c, one end of the extension rod 2 is connected to the first rod body 2a by a threaded connection, and the other end is connected to the end of the second rod body 2b away from the reamer head 3 by a threaded connection, and the first extension rod 2 is fixedly connected to the handle 1. By designing the extension rod 2 into a three-section structure of the first rod body 2a, the second rod body 2b and the extension piece 2c, the length of the extension rod 2 can be adjusted according to different surgical conditions. When the length of the extension rod 2 needs to be shortened, the extension piece 2c only needs to be removed, and then the first rod body 2a and the second rod body 2b are connected by a threaded connection so that it can be used. Of course, the connection design between the first rod body 2a and the second rod body 2b is connected by a threaded connection.

[0029] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

[0030] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A soft tissue reamer for orthopedic surgery, characterized in that: The invention comprises a handle (1), an extension rod (2) and a reamer head (3), wherein the extension rod (2) is further provided with a positioning hole (4), and the extension rod (2) comprises a first rod body (2a), a second rod body (2b) and an extension piece (2c), wherein the positioning hole (4) passes through the handle (1), the extension rod (2) and the reamer head (3), and the reamer head (3) comprises a cutter head body (3a) and a cutter blade (3b), wherein the cutter blade (3b) is provided with a first cutting edge (3c) and a second cutting edge (3d), wherein the first The cutting blade (3c) is connected to the second cutting blade (3d); the first cutting blade (3c) is arranged on the side of the twisted blade (3b); the second cutting blade (3d) is arranged at the bottom of the twisted blade (3b); the cutter head body (3a) and the twisted blade (3b) are an integrally formed structure; the twisted blade (3b) is provided with a plurality of groups of circular arrays arranged on the cutter head body (3a); and a toothed edge (3f) is also provided on a side of the twisted blade (3b) close to the positioning hole (4).

2. A soft tissue reamer for orthopedic surgery according to claim 1, characterized in that: The reamer head (3) further comprises a threaded connection column (3e), and the end of the second rod body (2b) is further provided with a threaded hole (2d) matching with the threaded connection column (3e).

3. The soft tissue reamer for orthopedic surgery according to claim 1, characterized in that: The upper part of the handle (1) is provided with an arc-shaped recess (5) for improving the gripping feeling, and a group of the arc-shaped recesses (5) are arranged symmetrically on the handle (1).

4. The soft tissue reamer for orthopedic surgery according to claim 1, characterized in that: The bottom of the handle (1) is provided with an anti-slip strip (6) for preventing slipping, and a plurality of the anti-slip strips (6) are provided and are evenly arranged on the handle (1).

5. The soft tissue reamer for orthopedic surgery according to claim 1, characterized in that: One end of the extension rod (2) is connected to the first rod body (2a) by means of a threaded connection, and the other end is connected to an end of the second rod body (2b) away from the reamer head (3) by means of a threaded connection. The extension rod (2) is fixedly connected to the handle (1).

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