A new bone harvesting device
By designing a novel bone harvesting drill with a hollow cylindrical structure and a single-sided cutting edge, combined with an inclined baffle and push rod design, the problems of low efficiency and high bone loss of existing bone harvesting instruments are solved, realizing an efficient and safe bone harvesting and bone grafting process, which is suitable for autologous bone transplantation in orthopedic surgery.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI WENTAI BAIDE MEDICAL DEVICES CO LTD
- Filing Date
- 2025-08-06
- Publication Date
- 2026-07-07
Smart Images
Figure CN224461761U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bone harvesting instruments, and in particular to a novel bone harvesting instrument. Background Technology
[0002] In orthopedic surgery, bone grafting is often necessary to facilitate a faster recovery for patients. Graft materials include autologous bone and artificial bone. Autologous bone is the optimal choice for surgery because it does not cause rejection. However, harvesting bone for grafting is a challenging process for surgeons. Currently, it is mainly done using bone forceps or a hollow trephine. Bone forceps are inefficient, and trephine harvesting involves taking a whole piece of bone, which is not suitable for grafting. Other methods of bone harvesting result in significant bone loss.
[0003] A new type of bone harvesting instrument is currently available. Bone harvesting is a procedure that has a significant impact on doctors during surgery. Currently, bone harvesting is mainly done using bone forceps or trephine saws. Bone forceps are not very efficient, and trephine saws remove whole pieces of bone, which cannot be used for bone grafting. Other methods of bone harvesting cause significant bone loss. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model provides a novel bone harvesting instrument.
[0005] This utility model is achieved using the following technical solution: A novel bone retrieval instrument includes a bone retrieval drill body, a connector fixedly connected to the top of the bone retrieval drill body, an inclined baffle slidably connected inside the bone retrieval drill body, a window opened on the front of the bone retrieval drill body, a pusher plate provided inside the bone retrieval drill body, a connecting support fixedly connected to the bottom of the pusher plate, a pusher ring fixedly connected to the bottom of the connecting support plate, and a bone retrieval drill bit fixedly connected to the bottom of the bone retrieval drill body.
[0006] With the above technical solution, the bone retrieval drill can be directly connected to an electric drill. It provides both AO and triangular interfaces. For ease of use and safety, and to avoid risks such as infection, the bone retrieval drill is sterilely packaged for single use. The bone retrieval drill is available in sizes with an outer diameter ranging from 5mm to 15mm, in 1mm increments.
[0007] As a further improvement to the above solution, a connecting support is provided inside the bone retrieval drill bit, and the connecting support is located inside the bone retrieval drill body.
[0008] The above technical solution features a single-sided cutting edge design on the head of the bone retrieval drill, which allows for easy entry into the bone. The main body of the bone retrieval drill is hollow and can be used to store bone.
[0009] As a further improvement to the above solution, the connecting support is located at the bottom of the bone-harvesting drill body, and the pushing ring is located at the bottom of the bone-harvesting drill body.
[0010] With the above technical solution, the bone retrieval drill has a window on the rear side with an inclined baffle inside, which can smoothly guide bone. The bone retrieval drill can be used freely in conjunction with an electric drill.
[0011] As a further improvement to the above solution, the inclined baffle is located inside the window, and the window is located at the bottom of the connector.
[0012] As a further improvement to the above solution, the connecting support is located inside the bone-harvesting drill bit, and the pushing ring is located at the bottom of the bone-harvesting drill body.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0014] This utility model features a single-sided cutting edge at the front of the bone harvesting drill, which can cut the bone at the front when rotating. The cut bone can then smoothly enter the cavity of the bone harvesting drill. The outer side of the main body of the bone harvesting drill has an annular groove to identify the drilling depth. The cutting edge of the bone harvesting drill has a clearance position, allowing the push rod to be smoothly inserted into the cavity of the bone harvesting drill and push the bone. At the rear of the main body of the bone harvesting drill, there is a large window with an inclined baffle inside, allowing the push rod to smoothly remove the bone from the cavity of the bone harvesting drill.
[0015] This utility model adopts a hollow cylindrical structure for the main body of the bone harvesting drill, which reduces weight and material consumption while ensuring strength. It addresses the shortcomings of the overall equipment in terms of operational precision, safety, and efficiency, enabling a controllable bone harvesting process under direct vision, stable axial drive force output, and a modular, easy-to-maintain structure. It is suitable for autologous bone grafting scenarios in orthopedic surgery, effectively improving bone harvesting quality and shortening operation time. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the side anatomical structure of the present invention;
[0018] Figure 3 This is a schematic diagram of the structure of this utility model from below;
[0019] Figure 4 This is a schematic diagram of the right-side structure of this utility model.
[0020] Explanation of key symbols:
[0021] 1. Bone retrieval drill body; 2. Connector; 3. Slanted baffle; 4. Window; 5. Pushing support plate; 6. Connecting support column; 7. Pushing ring; 8. Bone retrieval drill bit. Detailed Implementation
[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0023] Example:
[0024] Please combine Figure 1-4 This embodiment of a novel bone harvesting instrument includes a bone harvesting drill body 1, a connector 2 fixedly connected to the top of the bone harvesting drill body 1, an inclined baffle 3 slidably connected inside the bone harvesting drill body 1, a window 4 on the front of the bone harvesting drill body 1, a pusher plate 5 inside the bone harvesting drill body 1, a connecting pillar 6 fixedly connected to the bottom of the pusher plate 5, a pusher ring 7 fixedly connected to the bottom of the connecting pillar 6, and a bone harvesting drill bit 8 fixedly connected to the bottom of the bone harvesting drill body 1. By setting a single-sided cutting edge at the front end of the bone harvesting drill, the bone harvesting drill can cut the anterior bone when rotating, and the cut bone can smoothly enter the bone harvesting drill cavity. An annular groove is provided on the outer side of the bone harvesting drill body 1 to identify the drilling depth of the bone harvesting drill. A clearance is provided on the cutting edge of the bone harvesting drill, and the push rod can be smoothly inserted into the bone harvesting drill cavity with the head end to push the bone. A large window 4 is provided on the rear side of the bone harvesting drill body 1, and an inclined baffle is provided inside the window 4, so that the push rod can smoothly remove the bone from the bone harvesting drill cavity.
[0025] The bone retrieval drill can be directly connected to an electric drill and is available in both AO and triangular interfaces. For ease of use and safety, and to avoid risks such as infection, the bone retrieval drill is sterilely packaged for single use. The bone retrieval drill is available in sizes with an outer diameter from 5mm to 15mm, in 1mm increments.
[0026] The bone-retrieving drill bit 8 has a connecting support 6 inside, which is located inside the bone-retrieving drill body 1.
[0027] The bone retrieval drill bit features an 8-sided cutting edge design, allowing for easy entry into the bone. The main body of the bone retrieval drill 1 is hollow and can be used to store bone.
[0028] The connecting support 6 is located at the bottom of the bone-harvesting drill body 1, and the pushing ring 7 is located at the bottom of the bone-harvesting drill body 1.
[0029] The bone retrieval drill body 1 has a window 4 on the rear side, with an inclined baffle 3 inside, which can smoothly guide bone. The bone retrieval drill can be used freely in conjunction with an electric drill.
[0030] The inclined baffle 3 is located inside the window 4, which is located at the bottom of the connector 2. By setting the bone retrieval drill body 1 to adopt a hollow cylindrical structure, the weight is reduced while ensuring strength, and the consumption of raw materials is reduced. The overall equipment has shortcomings in terms of operational precision, safety and efficiency. The bone retrieval process is controllable under direct vision, with stable axial driving force output and modular and easy-to-maintain structure. It is suitable for autologous bone grafting in orthopedic surgery, which can effectively improve the quality of bone retrieval and shorten the operation time.
[0031] The connecting support 6 is located inside the bone retrieval drill bit 8, and the push ring 7 is located at the bottom of the bone retrieval drill body 1.
[0032] The implementation principle of a novel bone harvesting instrument in this application embodiment is as follows: A single-sided cutting edge is provided at the front end of the bone harvesting drill. When the drill rotates, it can cut the anterior bone, allowing the cut bone to smoothly enter the drill cavity. An annular groove is provided on the outer side of the drill body 1 to identify the drilling depth. A clearance is provided at the cutting edge of the drill, allowing the push rod to smoothly insert into the drill cavity and push the bone. A large window 4 is provided at the rear of the drill body 1, with an inclined baffle inside, allowing the push rod to smoothly remove the bone from the drill cavity. By adopting a hollow cylindrical structure for the drill body 1, weight is reduced while maintaining strength, thus lowering raw material consumption. The device addresses shortcomings in operational precision, safety, and efficiency, providing a directly visible and controllable bone harvesting process, stable axial drive force output, and a modular, easy-to-maintain structure. It is suitable for autologous bone grafting in orthopedic surgery, effectively improving bone harvesting quality and shortening surgical time.
[0033] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. A novel bone harvesting instrument, characterized in that, The device includes a bone-harvesting drill body (1), a connector (2) fixedly connected to the top of the bone-harvesting drill body (1), an inclined baffle (3) slidably connected inside the bone-harvesting drill body (1), a window (4) opened on the front of the bone-harvesting drill body (1), a push support plate (5) provided inside the bone-harvesting drill body (1), a connecting pillar (6) fixedly connected to the bottom of the push support plate (5), a push ring (7) fixedly connected to the bottom of the connecting pillar (6), and a bone-harvesting drill bit (8) fixedly connected to the bottom of the bone-harvesting drill body (1).
2. The novel bone harvesting instrument as described in claim 1, characterized in that: The bone-removing drill bit (8) is provided with a connecting support (6) inside, which is located inside the bone-removing drill body (1).
3. The novel bone harvesting instrument as described in claim 1, characterized in that: The connecting support (6) is located at the bottom of the bone-removing drill body (1), and the pushing ring (7) is located at the bottom of the bone-removing drill body (1).
4. The novel bone harvesting instrument as described in claim 1, characterized in that: The inclined baffle (3) is located inside the window (4), which is located at the bottom of the connector (2).
5. The novel bone harvesting instrument as described in claim 1, characterized in that: The connecting support (6) is located inside the bone-removing drill bit (8), and the pushing ring (7) is located at the bottom of the bone-removing drill body (1).