Multi-purpose periosteal distraction device
By designing an arc-shaped periosteal traction plate, limiting rings, and knob-driven traction screws, the problems of large trauma, poor applicability, and uncontrollable depth of existing periosteal traction devices have been solved, achieving precise control and wide applicability, and improving surgical safety and efficacy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG CANWELL MEDICAL DEVICES CO LTD
- Filing Date
- 2025-01-07
- Publication Date
- 2026-05-29
AI Technical Summary
Existing periosteal traction devices suffer from problems in design and operation, such as large trauma, poor applicability, and uncontrollable bone needle depth, especially when applied to the skull, lacking protection and precise control.
A multi-purpose periosteal traction device was designed, comprising an arc-shaped periosteal traction plate, a bone needle with a limiting retaining ring, and a traction pin driven by a knob. Through the threaded connection and the cooperation of the limiting retaining ring, precise periosteal traction and accurate bone needle implantation are achieved, reducing trauma and expanding the scope of application.
It achieves minimal surgical trauma, wide applicability, and precise control of periosteal traction, improving surgical safety and efficacy. In particular, the protective design for the skull reduces the risk of postoperative loosening.
Smart Images
Figure CN224291969U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of medical device technology, specifically relating to a multi-purpose periosteal traction device. Background Technology
[0002] In recent years, numerous periosteal distraction devices have emerged, all based on the same principle, but their actual clinical operation varies. However, with the accumulation of cases, the shortcomings in the design and operation of existing periosteal distraction devices have gradually become apparent. Existing periosteal distraction devices have the following drawbacks: 1. Because the distraction pins are located in the middle of the periosteal distraction plate, bilateral periosteal dissection is required, resulting in significant trauma; 2. Distraction devices intended for limb ischemic diseases are applied to the skull, leading to poor applicability; 3. The depth of the bone pins cannot be controlled, resulting in uncontrollable damage. Summary of the Invention
[0003] The purpose of this invention is to provide a multi-purpose periosteal traction device to solve the problems mentioned in the background art.
[0004] To solve the above-mentioned technical problems, the technical solution provided by this utility model is: a multi-purpose periosteal traction device, comprising at least:
[0005] The periosteal traction plate is a strip-shaped plate that is curved in an arc along its length, and a locking hole is provided at one end of the periosteal traction plate;
[0006] Bone needle, one end of which has a needle tip that can be inserted into a bone, and the other end of which has a retaining ring;
[0007] The tension pin has a through cavity extending through it along its length. The tension pin consists of a head and a threaded rod that engages with the locking hole.
[0008] The tension nail and the periosteal tension plate are threadedly connected, the bone needle is inserted into the through cavity, the limiting ring is located on the nail head side, and the needle head extends out of the tension nail.
[0009] Preferably, the periosteal traction device further includes a knob for driving the traction screw to rotate, the knob being connected to the screw head.
[0010] Preferably, the nail head is a hexagonal head, and one end of the knob is provided with a hexagonal groove that mates with the hexagonal head.
[0011] Preferably, the other end face of the knob is provided with Arabic numerals evenly spaced along the circumference.
[0012] Preferably, the needle tip has external threads for connection with bone.
[0013] Preferably, the free end face of the limiting ring is provided with a driving part for driving the bone needle to rotate into the bone.
[0014] Preferably, the periosteal traction plate on the same side as the locking hole is provided with at least one bone needle hole, which is located between the end face of the periosteal traction plate and the locking hole.
[0015] Preferably, there are two bone pinholes, which are arranged along the width of the periosteal tension plate.
[0016] Preferably, the end face of the nail head is provided with a groove for accommodating the limiting ring, and the groove communicates with the through cavity.
[0017] Preferably, the end of the periosteal traction plate away from the locking hole is provided with a rounded structure, and the thickness of the rounded structure gradually decreases from the end near the locking hole to the end away from the locking hole.
[0018] Compared with the prior art, the multi-purpose periosteal traction device of this invention has the following advantages:
[0019] 1. The traction nail is located at one end of the periosteal traction plate. During surgery, only the periosteum on one side of the incision is dissected, resulting in minimal trauma. The periosteal traction plate has a certain curvature along its length, which makes the periosteal traction device suitable not only for periosteal traction of the limbs but also for periosteal traction of the skull. Moreover, the curvature direction is consistent with the periosteum curvature direction, which has a protective effect on the periosteum.
[0020] 2. Arabic numerals are evenly distributed around the circumference on the knob. By setting Arabic numerals on the knob, the angle and number of rotations of the tension nail can be precisely controlled to ensure accurate control of the height of the periosteal tension plate. A limiting ring is set on the bone pin so that the limiting ring abuts against the head of the tension nail to control the depth of the bone pin implantation in the human body.
[0021] 3. The periosteal traction device of this utility model can treat limb ischemic diseases and central nervous system diseases, and has a wide range of applications; if the periosteal traction plate and traction nail become loose after surgery, they can be accurately locked again, resulting in a low postoperative failure rate. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the periosteal traction device of this utility model;
[0023] Figure 2 This is a schematic diagram of the periosteal traction plate.
[0024] Figure 3 This is a schematic diagram of the bone needle structure;
[0025] Figure 4This is a schematic diagram of the tension nail structure;
[0026] Figure 5 This is a schematic diagram of the knob's structure;
[0027] In the figure, 1 is the periosteal traction plate, 11 is the locking hole, 12 is the bone needle hole, 2 is the bone needle, 21 is the limiting ring, 22 is the drive unit, 23 is the needle head, 3 is the traction nail, 31 is the nail head, 32 is the threaded rod, 33 is the through cavity, 34 is the groove, 4 is the knob, 41 is the hexagonal groove, 5 is the bone, and 6 is the periosteum. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description of the multi-purpose periosteal traction device of this utility model is provided through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this utility model.
[0029] This invention provides a multi-purpose periosteal traction device, such as... Figure 1 As shown, it mainly includes: periosteal traction plate 1, bone pin 2, traction screw 3, and knob 4.
[0030] Among them, such as Figure 2 As shown, the periosteal distraction plate 1 is a strip-shaped plate that is curved in an arc along its length. This arc-shaped design allows the periosteal distraction device to be suitable not only for the periosteal distraction of the limbs but also for the periosteal distraction of the skull. During distraction, the bending direction of the distraction plate 1 is consistent with the bending direction of the periosteal membrane, providing better protection for the periosteal membrane. A locking hole 11 is provided at one end of the distraction plate 1. This locking hole 11 is used for threaded fixation with the distraction screw 3, thereby achieving a stable connection between the two. The design of the locking hole 11 at one end of the distraction plate 1 allows for the dissection of the periosteal membrane only on one side of the incision during surgery, resulting in minimal trauma.
[0031] like Figure 4 As shown, the tension nail 3 has a through cavity 33 extending along its length. The tension nail 3 is divided into a nail head 31 and a threaded rod 32. The end face of the threaded rod 32 is used to abut against the bone. When the tension nail 3 is rotated, the tension nail 3 is always rotating on the bone surface to achieve the lifting of the tension plate 3.
[0032] like Figure 3As shown, one end of the bone needle 2 has a needle tip 23 that inserts into the bone to position and support the tension plate 1 and tension nail 3. The other end has a limiting ring 21. When the limiting ring 21 abuts against the nail head 31 of the tension nail 3, it controls the depth of the bone needle 2's insertion into the bone, achieving precise control. In use, the bone needle 2 passes through the tension nail 3, with the limiting ring 21 on the same side as the nail head 31. The needle tip of the bone needle 2 extends out of the tension nail 3 and is fixed to the bone. When the bone needle 2 is further screwed in, the limiting ring 21 abuts against the nail head 31 of the tension nail 3, preventing the bone needle 2 from penetrating deeper into the bone. The design of the limiting ring 21 prevents the bone needle 2 from inserting too deeply into the bone and damaging the brain tissue within the skull.
[0033] Knob 4 is designed to make it easier to rotate tension pin 3, such as... Figure 1 As shown, knob 4 is connected to the head 31 of tension pin 3. Specifically, as... Figure 5 As shown, the head 31 of the tension nail 3 is a hexagonal head, and one end of the knob 4 is provided with a hexagonal groove 41 that mates with the head 31. The tension nail 3 and the knob 4 are connected by the hexagonal head and the hexagonal groove 41. The other end face of the knob 4 is provided with Arabic numerals evenly distributed along the circumference. This helps the doctor to accurately control the height of the tension plate 1 by observing and recording the angle and number of rotations of the knob 4 during the operation, thereby achieving precise control of periosteal tension.
[0034] In some preferred embodiments, in order to make it easier to insert the bone needle 2 into the bone, a driving part 22 is provided on the free end face of the limiting ring 21, and the driving part 22 is preferably designed with a square head.
[0035] In some preferred embodiments, in order to prevent the retaining ring 21 from interfering with the connection between the knob 4 and the nail head 31, a groove 34 for accommodating the retaining ring 21 is provided on the end face of the nail head 31, and the groove 34 communicates with the through cavity.
[0036] In some preferred embodiments, in order to increase the connection stability between the bone needle 2 and the bone, the tip of the bone needle 2 is provided with external threads for connecting with the bone.
[0037] In some preferred embodiments, the end of the traction plate 1 away from the locking hole 11 is designed with a rounded structure. The thickness of the rounded structure gradually decreases from the end near the locking hole 11 to the end away from the locking hole 11. This design helps the traction plate 1 to more easily peel off the periosteum and reduces damage to surrounding tissues during the operation, thereby improving the safety of the operation.
[0038] In some preferred embodiments, to increase the applicability and flexibility of the device, at least one bone pin hole 12 is provided on the tension plate 1 next to the locking hole 11 for additional fixation of the tension plate 1. There are two bone pin holes 12, arranged along the width direction of the tension plate 1, which provides better fixation and stability.
[0039] After assembly, the periosteal traction device of this invention consists of a traction nail 3 and a traction plate 1 connected by threads, a bone needle 2 inserted into the traction nail 3, a limiting ring 21 accommodated in the groove 34 of the traction nail 3, and a knob 4 connected to the nail head 31 of the traction nail 3 through the drive part 22 of the bone nail 3. The bone needle 2 is fixed to the bone. This structure makes the overall structure of the periosteal traction device more compact. The working principle of the device is as follows: rotating the traction nail 3 causes it to rotate in place under the restriction of the limiting ring 21. Under the resistance of the periosteal membrane, the rotating traction nail 3 drives the traction plate 1 to rise away from the bone, thus the traction plate 1 drives the periosteal membrane to rise.
[0040] The present invention provides a multi-purpose periosteal traction device. The specific operation process is as follows:
[0041] 1. First, the skin of the surgical site is incised to expose the periosteum. After connecting the traction screws to the traction plate, the traction plate is peeled off the periosteum and placed in the predetermined position. The traction plate is then fixed between the periosteum and the bone surface. Bone pins are inserted into the bone through the pin holes of the traction plate to position it. If there are no pin holes on the traction plate, bone pins are inserted into the bone through the locking holes of the traction plate to position it.
[0042] 2. Using a bone pin tool, screw the bone pin through the locking hole to the limit depth to fix the periosteal traction plate and traction screw to the bone.
[0043] 3. Connect the knob to the head of the traction pin, rotate the knob to rotate the traction pin, thereby lifting the traction plate to begin periosteal traction, and then remove the bone pin from the bone pin hole.
[0044] 4. Rotate the tension pin at regular intervals to slowly stretch the periosteum.
[0045] 5. After a period of traction, remove the periosteal traction device from between the bone and the periosteum.
[0046] In summary, the multi-purpose periosteal traction device of this invention features minimal trauma, wide applicability, and precise control, which can significantly improve surgical outcomes and safety, and has important clinical application value.
[0047] In summary, the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A multi-purpose periosteal traction device, characterized in that, At least including: The periosteal traction plate is a strip-shaped plate that is curved in an arc along its length, and a locking hole is provided at one end of the periosteal traction plate; Bone needle, one end of which has a needle tip that can be inserted into a bone, and the other end of which has a retaining ring; The tension pin has a through cavity extending through it along its length. The tension pin consists of a head and a threaded rod that engages with the locking hole. The tension nail and the periosteal tension plate are threadedly connected, the bone needle is inserted into the through cavity, the limiting ring is located on the nail head side, and the needle head extends out of the tension nail.
2. The periosteal traction device according to claim 1, characterized in that, The periosteal traction device also includes a knob for driving the traction screw to rotate, the knob being connected to the screw head.
3. The periosteal traction device according to claim 2, characterized in that, The nail head is hexagonal, and one end of the knob is provided with a hexagonal groove that matches the hexagonal head.
4. The periosteal traction device according to claim 3, characterized in that, The other end of the knob is decorated with Arabic numerals evenly spaced along the circumference.
5. The periosteal traction device according to claim 1, characterized in that, The needle has external threads for connecting to the bone.
6. The periosteal traction device according to claim 5, characterized in that, The free end face of the limiting ring is provided with a driving part for driving the bone needle to rotate into the bone.
7. The periosteal traction device according to claim 1, characterized in that, At least one bone needle hole is provided on the periosteal traction plate on the same side as the locking hole, and the bone needle hole is located between the end face of the periosteal traction plate and the locking hole.
8. The periosteal traction device according to claim 7, characterized in that, The number of bone pin holes is two, and the two bone pin holes are arranged along the width direction of the periosteal traction plate.
9. The periosteal traction device according to claim 1, characterized in that, The end face of the nail head is provided with a groove for accommodating the limiting ring, and the groove communicates with the through cavity.
10. The periosteal traction device according to any one of claims 1-9, characterized in that, The end of the periosteal traction plate away from the locking hole is designed with a rounded structure, and the thickness of the rounded structure gradually decreases from the end near the locking hole to the end away from the locking hole.