一种髓内针导针
By designing an intramedullary needle guide with an arc-shaped main body and an arc-shaped guide surface, the problem of the guide needle penetrating the cortex was solved, achieving a non-invasive, radiation-free, and highly efficient needle insertion operation.
Patent Information
- Application Number
- CN202520815247.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-27
- Publication Date
- 2026-07-17
- Estimated Expiration
- 2035-04-27
AI Technical Summary
Existing guide needles are prone to penetrating the posterior cortex of the tibia or the medial cortex of the femur during use, requiring repeated angle adjustments, which leads to significant trauma for patients and radiation damage to medical staff.
Design an intramedullary needle guide with an arc-shaped main body and an arc-shaped guide surface at the needle head. The projections of the arc-shaped part and the guide surface intersect to form an arc-shaped needle insertion trajectory, avoiding straight puncture of the side wall. The guide surface provides force guidance.
It eliminates the need for repeated angle adjustments, ensures smooth needle insertion, reduces patient trauma and radiation exposure, and improves operational efficiency.
Smart Images
Figure CN224505551U_ABST
Abstract
Claims
1. An intramedullary needle guide pin, characterized in that include: The needle head and the main body are configured as an elongated strip extending along an axis, the axis passing through the center point of the cross-section of the main body. At least a portion of the main body is configured as an arc shape. The needle head is located at the end of the main body and is configured to have a closed outer surface. An arc-shaped portion and a guide portion are provided on the outer surface. The projection of the arc-shaped portion and the projection of the guide portion intersect at the intersection point, and the projection of the arc-shaped portion and the projection of the guide portion are respectively located on both sides of the line connecting the intersection point and the center point.
2. The intramedullary needle guide pin of Claim 1, wherein, The intersection point is set as the tip of the needle.
3. The intramedullary needle guide pin of Claim 1, wherein, At least a portion of the cross-section of the main body is set to be circular or elliptical.
4. The intramedullary needle guide pin of Claim 1, wherein, The guide surface is planar.
5. The intramedullary needle guide pin of Claim 1, wherein, The angle between the projection of the arc-shaped part and the projection of the guide surface is an acute angle.
6. The intramedullary needle guide pin of Claim 1, wherein, Along the extension direction of the main body section, at least a portion of the arc-shaped portion protrudes relative to the main body.
7. The intramedullary needle guide pin of Claim 1, wherein, The arc-shaped portion covers the connection point on the needle head extending from the intersection point to the connecting body portion, and the guide portion covers the connection point extending from the intersection point to the connecting body portion.
8. The intramedullary needle guide pin of Claim 1, wherein, Project along a second projection direction perpendicular to the guide surface, and set the included angle between the guide surfaces at the intersection point to an acute angle.
9. The intramedullary needle guide pin of Claim 1, wherein, The connection between the needle tip and the main body is rounded.
10. The intramedullary needle guide pin of Claim 1, wherein, Both the main body and the needle head are designed to be arc-shaped.