A new type of rapid iliac bone harvester

Abstract

The present invention relates to the field of orthopedic equipment, and more specifically, is a novel rapid iliac bone extractor, comprising an oscillating electric drill, a No. 1 oscillating saw head, a No. 1 oscillating saw, a No. 2 oscillating saw and a No. 2 oscillating saw head, wherein the No. 1 oscillating saw head and the No. 2 oscillating saw head are respectively fixedly connected to the output shaft of the oscillating electric drill, a pair of the No. 1 oscillating saws are provided, and the pair of the No. 1 oscillating saws are symmetrically installed on both sides of the front end of the No. 1 oscillating saw head, and the No. 2 oscillating saw is fixedly installed on one side of the front end of the No. 2 oscillating saw head, and the front end of the No. 2 oscillating saw is provided with a step structure; one group of oscillating saws of the present invention can quickly and symmetrically cut into the ilium to ensure the neatness of the bone section, and the other oscillating saw can vertically cut from the side of the ilium to cut off the cut part, and then use the step structure feature to directly pull out the cut ilium, thereby simplifying the operation, greatly shortening the time, avoiding damage to surrounding tissues, reducing the possibility of infection, and achieving smooth cutting and neat incisions, thereby reducing bone loss.

Description

Technical Field

[0001] The invention relates to the field of orthopedic equipment, in particular to a novel rapid iliac bone extractor. Background Art

[0002] When performing autologous bone transplantation in clinical orthopedics, the iliac crest is the most common donor site. This is because the iliac crest can provide a larger amount of autologous bone and has little effect on the stability of the entire pelvis after bone removal.

[0003] Currently, bone harvesting surgery often uses a bone knife to cut off the two ends and the bottom of the target bone to separate it from other parts of the pelvis.

[0004] However, this method of bone extraction has certain disadvantages: 1. The operation is very traumatic. The bone knife will cut the pelvis, which will cause damage to the surrounding tissues and may cause pelvic fractures. 2. The use of the bone knife will cause some bone loss. 3. It is impossible to accurately remove the bone blocks of appropriate size. There is a possibility that the bone blocks are too large and wasted, or too small and require repeated operations. 4. The site of bone extraction often deviates from the intended site. 5. The bone extraction operation takes too long, which prolongs the total operation time and increases the possibility of infection at the bone extraction site. Summary of the invention

[0005] In view of the problems in the prior art, the present invention provides a novel rapid iliac bone extractor.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a new type of rapid iliac bone extractor, including an oscillating electric drill, a No. 1 oscillating saw head, a No. 1 oscillating saw, a No. 2 oscillating saw and a No. 2 oscillating saw head, the No. 1 oscillating saw head and the No. 2 oscillating saw head are respectively fixedly connected to the output shaft of the oscillating electric drill, the No. 1 oscillating saw is provided in a pair, and the pair of the No. 1 oscillating saws are symmetrically installed on both sides of the front end of the No. 1 oscillating saw head, the No. 2 oscillating saw is fixedly installed on one side of the front end of the No. 2 oscillating saw head, and the front end of the No. 2 oscillating saw is provided with a stepped structure;

[0007] The front ends of the No. 1 oscillating saw head and the No. 2 oscillating saw head are both movably plugged with a depth-limiting cylinder, and one side of the front ends of the No. 1 oscillating saw head and the No. 2 oscillating saw head is threadedly mounted with a locking screw that abuts against the depth-limiting cylinder;

[0008] A guide pin hole is provided in the axial direction of the depth-limiting cylinder;

[0009] The specific steps of using the bone extractor are as follows:

[0010] S1: Use a guide needle under C-arm fluoroscopy to determine the location and depth of iliac bone harvesting;

[0011] S2: Determine the size of the bone to be harvested based on the patient's bone transplant needs, and select the No. 1 and No. 2 oscillating saws of matching sizes;

[0012] S3: According to the target depth of the ilium to be removed, adjust the insertion depth of the depth-limiting cylinders at the front ends of the No. 1 oscillating saw head and the No. 2 oscillating saw head, then tighten the locking screw to lock the depth-limiting cylinder, and first load the No. 1 oscillating saw head on the oscillating electric drill;

[0013] S4: Connect the guide pin hole at the front end of the depth-limiting cylinder with the guide pin, and then put the entire device in along the guide pin until the No. 1 oscillating saw contacts the surface of the ilium, start the oscillating electric drill, and drive the No. 1 oscillating saw to cut into the ilium. When the depth-limiting cylinder contacts the surface of the ilium and cannot go deeper, turn off the oscillating electric drill, withdraw the device, and replace and install the No. 2 oscillating saw head on the output shaft at the front end of the oscillating electric drill;

[0014] S5: The device goes deeper along the guide needle again. When it cannot go any deeper, the oscillating electric drill is started to drive the No. 2 oscillating saw to cut perpendicularly to the side of the ilium.

[0015] S6: After the cutting is complete, stop the oscillating electric drill, use the No. 2 oscillating saw to pull out the cut ilium block along with the withdrawal of the No. 2 oscillating saw, and finally remove the ilium and the guide pin.

[0016] Furthermore, a hexagonal slot is provided at the front end of the output shaft of the oscillating electric drill, and hollow hexagonal columns are provided at the ends of the No. 1 oscillating saw head and the No. 2 oscillating saw head.

[0017] Beneficial effects of the present invention:

[0018] (1) The invention discloses a novel rapid iliac bone extractor. A set of oscillating saws can quickly and symmetrically cut into the ilium to ensure the neatness of the bone section. Another oscillating saw can vertically cut from the side of the ilium to cut off the cut portion. Then, the cut ilium can be directly pulled out by utilizing the characteristics of its stepped structure. The operation is simplified, the time is greatly shortened, damage to surrounding tissues is avoided, the possibility of infection is reduced, the cutting is smooth, the incision is neat, and bone loss can be reduced.

[0019] (2) The novel rapid iliac bone harvester described in the present invention can adjust the size of the oscillating saw according to the size of the bone to be harvested, thereby avoiding the problem of the bone block being too large or too small.

[0020] (3) The novel rapid iliac bone harvester described in the present invention has a guide pin hole throughout the entire device, which can be used to locate the bone harvesting position by means of a guide pin before cutting and harvesting the bone.

[0021] (4) The novel rapid iliac bone harvester described in the present invention is provided with a depth-limiting cylinder and a locking screw. The height of the cylinder is adjusted according to the depth of bone harvesting. The locking screw on the oscillating saw head is tightened to fix the depth-limiting cylinder to adjust the depth of bone harvesting. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0023] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of the present invention;

[0024] In the figure: 1. Oscillating electric drill; 2. Oscillating saw head No. 1; 3. Oscillating saw No. 1; 4. Depth limiting cylinder; 5. Locking screw; 6. Oscillating saw No. 2; 7. Oscillating saw head No. 2. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0026] like Figure 1 As shown, a novel rapid iliac bone remover described in the present invention comprises an oscillating electric drill 1, a No. 1 oscillating saw head 2, a No. 1 oscillating saw 3, a No. 2 oscillating saw 6 and a No. 2 oscillating saw head 7. The No. 1 oscillating saw head 2 and the No. 2 oscillating saw head 7 are respectively fixedly connected to the output shaft of the oscillating electric drill 1. A pair of No. 1 oscillating saws 3 are provided, and the pair of No. 1 oscillating saws 3 are symmetrically installed on both sides of the front end of the No. 1 oscillating saw head 2. The No. 2 oscillating saw 6 is fixedly installed on one side of the front end of the No. 2 oscillating saw head 7, and the front end of the No. 2 oscillating saw 6 is provided with a stepped structure.

[0027] The front end of the output shaft of the oscillating electric drill 1 is provided with a hexagonal slot, and the ends of the No. 1 oscillating saw head 2 and the No. 2 oscillating saw head 7 are both provided with hollow hexagonal columns. The oscillating saw head and the oscillating electric drill 1 can be quickly disassembled and assembled through the cooperation of the hexagonal slot and the hollow hexagonal columns.

[0028] The front ends of the No. 1 oscillating saw head 2 and the No. 2 oscillating saw head 7 are both movably connected with the limited depth cylinder 4, and one side of the front ends of the No. 1 oscillating saw head 2 and the No. 2 oscillating saw head 7 are both threadedly installed with a locking screw 5 that abuts against the depth limiting cylinder 4. The height of the cylinder can be adjusted according to the bone removal depth, thereby accurately determining the bone removal depth.

[0029] The depth-limiting cylinder 4 is provided with a guide pin hole in the axial direction, so that the bone removal position can be located by the guide pin first and then the bone can be cut and removed, so that the bone removal positioning is more accurate and deviation of the bone removal position can be prevented.

[0030] The specific use steps of the present invention are:

[0031] S1: Use a guide needle under C-arm fluoroscopy to determine the location and depth of iliac bone harvesting;

[0032] S2: Determine the size of the bone to be harvested according to the patient's bone transplantation needs, and select a No. 1 oscillating saw 3 and a No. 2 oscillating saw 6 of matching sizes;

[0033] S3: According to the target depth of the ilium to be taken, the insertion depth of the depth-limiting cylinder 4 at the front end of the No. 1 oscillating saw head 2 and the No. 2 oscillating saw head 7 is adjusted, and then the locking screw 5 is tightened to lock the depth-limiting cylinder 4, and the No. 1 oscillating saw head 2 is first loaded on the oscillating electric drill 1 through the hollow hexagonal prism at the tail to match the hexagonal slot on the output shaft of the oscillating electric drill 1;

[0034] S4: Connect the guide pin hole at the front end of the depth-limiting cylinder 4 to the guide pin, and then put the entire device in along the guide pin until the No. 1 oscillating saw 3 contacts the surface of the ilium, start the oscillating electric drill 1, and drive the No. 1 oscillating saw 3 to cut into the ilium. When the depth-limiting cylinder 4 contacts the surface of the ilium and cannot go deeper, turn off the oscillating electric drill 1, withdraw the device, and replace and install the No. 2 oscillating saw head 7 on the output shaft at the front end of the oscillating electric drill 1;

[0035] S5: The device goes deeper along the guide needle again, and when it cannot go any deeper, the oscillating electric drill 1 is started to drive the second oscillating saw 6 to cut perpendicularly to the side of the ilium;

[0036] S6: After the cutting is complete, the oscillating electric drill 1 is stopped, and the cut ilium block is pulled out together with the withdrawal of the No. 2 oscillating saw 6 with the aid of the No. 2 oscillating saw 6, and finally the ilium and the guide needle are taken out.

[0037] The present invention cooperates with two groups of oscillating saws. One group of oscillating saws can quickly and symmetrically cut into the ilium to ensure the neatness of the bone section. The other oscillating saw can vertically cut from the side of the ilium to cut off the cut part, and then use its stepped structure to directly pull out the cut ilium. The operation is simplified, the time is greatly shortened, damage to surrounding tissues is avoided, the possibility of infection is reduced, the cutting is smooth, the incision is neat, and bone loss can be reduced.

[0038] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A novel rapid iliac bone extractor, characterized in that: The invention comprises an oscillating electric drill (1), a No. 1 oscillating saw head (2), a No. 1 oscillating saw (3), a No. 2 oscillating saw (6) and a No. 2 oscillating saw head (7), wherein the No. 1 oscillating saw head (2) and the No. 2 oscillating saw head (7) are respectively fixedly connected to the output shaft of the oscillating electric drill (1), a pair of the No. 1 oscillating saws (3) are provided, and the pair of the No. 1 oscillating saws (3) are symmetrically installed on both sides of the front end of the No. 1 oscillating saw head (2), the No. 2 oscillating saw (6) is fixedly installed on one side of the front end of the No. 2 oscillating saw head (7), and the front end of the No. 2 oscillating saw (6) is provided with a stepped structure; The front ends of the first oscillating saw head (2) and the second oscillating saw head (7) are both movably plugged with a depth-limiting cylinder (4), and one side of the front ends of the first oscillating saw head (2) and the second oscillating saw head (7) is threadedly mounted with a locking screw (5) that abuts against the depth-limiting cylinder (4); The depth-limiting cylinder (4) is provided with a guide pin hole in the axial direction; The specific steps of using the bone extractor are as follows: S1: Use a guide needle under C-arm fluoroscopy to determine the location and depth of iliac bone harvesting; S2: Determine the size of the bone to be harvested based on the patient's bone grafting needs, and select the No. 1 oscillating saw (3) and No. 2 oscillating saw (6) of matching sizes; S3: According to the target depth of the ilium to be taken, the insertion depth of the depth-limiting cylinder (4) at the front end of the No. 1 oscillating saw head (2) and the No. 2 oscillating saw head (7) is adjusted, and then the locking screw (5) is tightened to lock the depth-limiting cylinder (4), and the No. 1 oscillating saw head (2) is first loaded on the oscillating electric drill (1); S4: Connect the guide pin hole at the front end of the depth-limiting cylinder (4) to the guide pin, and then insert the entire device along the guide pin until the No. 1 oscillating saw (3) contacts the surface of the ilium, start the oscillating electric drill (1), and drive the No. 1 oscillating saw (3) to cut into the ilium. When the depth-limiting cylinder (4) abuts against the surface of the ilium and cannot go deeper, turn off the oscillating electric drill (1), withdraw the device, and replace and install the No. 2 oscillating saw head (7) on the output shaft at the front end of the oscillating electric drill (1); S5: The device goes deeper along the guide needle again, and when it cannot go any deeper, the oscillating electric drill (1) is started to drive the second oscillating saw (6) to cut perpendicularly to the side of the ilium; S6: After the cutting is complete, the oscillating electric drill (1) is stopped, and the cut ilium block is pulled out together with the withdrawal of the No. 2 oscillating saw (6) with the aid of the No. 2 oscillating saw (6), and finally the ilium and the guide needle are removed.

2. A novel rapid iliac bone extractor according to claim 1, characterized in that: The front end of the output shaft of the oscillating electric drill (1) is provided with a hexagonal slot, and the ends of the No. 1 oscillating saw head (2) and the No. 2 oscillating saw head (7) are both provided with hollow hexagonal columns.

Images