Straddle type conical expander with inclined plane
By designing a cycling conical dilator with beveled and serrated, the problem of conventional conical dilators being difficult to fit joint hyperplasia is solved, and a more efficient lumbar intervertebral foraminioscopic surgery is achieved, reducing the difficulty of surgery and the labor intensity of medical staff.
Patent Information
- Application Number
- CN202420798016.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-17
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-04-17
AI Technical Summary
The end of the conventional conical dilator is plane, making it difficult to fit the surgical site of the patient with hyperplasia during surgery, and it is difficult to puncture the target of the object protruding.
A conical dilator with a beveled surface is designed, with a beveled surface and sawtooth at one end and a central hole is provided in the center. The inclined part can be fitted with the joint protrusion, and the serrated teeth are anchored on the joint protrusion to avoid sliding.
Through the design of bevel and serrated surfaces, it can effectively fit joint hyperplasia, reduce the difficulty of surgery, improve surgical efficiency, and reduce the labor intensity of medical staff.
Smart Images
Figure CN222676300U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of medical instruments, in particular to a straddling conical expander with an inclined surface. Background Art
[0002] Conical dilators are widely used in lumbar transforaminal endoscopic spinal surgery. The end of a conventional conical dilator is flat, which makes surgery difficult on patients with superior articular process hyperplasia. During surgery, due to the hyperplasia of the patient's superior articular process, the end face of the conical dilator is difficult to fit the surgical site, making it difficult to puncture and reach the target point of the protrusion. Utility Model Content
[0003] The utility model aims to provide a straddling conical dilator with an inclined surface, which solves the problem that the end of a conventional conical dilator is a plane, which makes surgery on patients with superior articular process hyperplasia difficult and it is difficult to puncture and reach the target point of the protrusion.
[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0005] The utility model discloses a straddling conical expander with an inclined surface, which comprises a body. One end of the body is provided with an inclined surface, the inclined surface is provided with saw teeth, and the center of the body is provided with a central hole.
[0006] Furthermore, the sawtooth includes two parts, and the sawtooth in the two parts are symmetrically arranged.
[0007] Furthermore, the central hole passes through the body.
[0008] Furthermore, the cross section of the central hole is set to be circular.
[0009] Compared with the prior art, the beneficial technical effects of the utility model are:
[0010] The utility model processes an inclined surface at one end of the main body. When in use, the inclined surface part will not be affected by the hyperplasia of the articular process, and the target point of the intervertebral disc herniation can be reached. The articular process is formed by a ring saw, which is simple and convenient, with little damage, reduces the difficulty of lumbar interforaminal endoscopic surgery, improves the efficiency of the surgery, and reduces the labor intensity of medical staff. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] The utility model will be further described below in conjunction with the accompanying drawings.
[0012] Figure 1 This is a front view of the utility model of a tapered expander with an inclined surface straddling type;
[0013] Figure 2 It is a side view of the utility model of the tapered expander with an inclined surface.
[0014] Explanation of the accompanying drawings: 1. main body; 2. inclined surface; 3. serration; 4. center hole. DETAILED DESCRIPTION
[0015] like Figure 1-2 As shown, a straddling conical expander with an inclined surface comprises a body 1, one end of the body 1 is provided with an inclined surface 2, the inclined surface 2 is provided with saw teeth 3, and the center of the body 1 is provided with a center hole 4. The utility model processes an inclined surface at one end of the body, and when in use, the inclined surface part can fit with the hyperplasia of the articular process, and the inclined surface part can be unaffected by the hyperplasia of the articular process, so as to reach the target point of the intervertebral disc herniation, and is easy to use, reduces the difficulty of lumbar intervertebral foraminal endoscopic surgery, improves the efficiency of the surgery, and reduces the labor intensity of medical staff.
[0016] The sawtooth 3 includes two parts, and the sawtooth 3 in the two parts is symmetrically arranged; the sawtooth 3 is anchored on the articular process hyperplasia to prevent the body 1 from sliding during operation.
[0017] The central hole 4 passes through the body 1 , and the cross section of the central hole 4 is set to be circular, and the guide wire can pass through the central hole 4 .
[0018] Specifically, the outer diameter of the body 1 is 6.4 mm, the diameter of the center hole 4 is 1.0 mm, and the inclination angle of the inclined surface 2 is 45°.
[0019] The use process of the utility model is as follows:
[0020] First, the puncture needle is positioned on the superior articular process, the needle core is withdrawn, a guide wire is inserted after local anesthesia, the four-level dilator is expanded step by step, the dilator is removed, and a conical dilator is placed along the guide wire. The saw teeth 3 of the conical dilator are anchored on the superior articular process, and the bevel 2 crosses the articular process to protect the dural sac nerve roots. Then a ring saw protective sleeve is placed along the conical dilator, and a ring saw is placed between the ring saw protective sleeve and the conical dilator to form the superior articular process in one go. After success, an ordinary conical dilator is placed, and a working cannula is placed along the dilator. The puncture and catheterization are successful.
[0021] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.
Claims
1. A tapered expander with an inclined surface, characterized in that: It comprises a body (1), one end of the body (1) is provided with an inclined surface (2), the inclined surface (2) is provided with saw teeth (3), and the center of the body (1) is provided with a center hole (4).
2. The tapered expander with an inclined surface according to claim 1, characterized in that: The sawtooth (3) comprises two parts, and the two parts of the sawtooth (3) are symmetrically arranged.
3. The tapered expander with an inclined surface according to claim 1, characterized in that: The central hole (4) passes through the body (1).
4. The tapered expander with an inclined surface according to claim 1, characterized in that: The cross section of the central hole (4) is arranged to be circular.