CN216876497U

CN216876497U - Device for taking ilium cancellous bone

Info

Publication number: CN216876497U
Application number: CN202121604632.0U
Authority: CN
Inventors: 李厚坤; 郝定均; 王晓辉
Original assignee: Xian Honghui Hospital
Current assignee: Xian Honghui Hospital
Priority date: 2021-07-14
Filing date: 2021-07-14
Publication date: 2022-07-05
Anticipated expiration: 2031-07-14

Abstract

The utility model discloses a device for taking ilium cancellous bone, which comprises a spatula and a rod body, wherein the diameter of a part with a groove at the front end of the rod body is slightly larger, the rear end of the rod body is connected with a T-shaped handle, the spatula is semi-ellipsoidal, one part of a circular opening of the spatula is butted with the front end of the rod body, so that the spatula is communicated with the groove, the other part of the circular opening of the spatula forms a cutting edge, the plane where the cutting edge is located and the edge of the opening of the groove form an included angle of 90 degrees, and the cutting edge of the spatula can cut cancellous bone between the inner plate and the outer plate of the ilium through advancing and retreating the T-shaped handle. The utility model has the advantages of simple structure, low cost and convenient use, and is beneficial to improving the bone grafting efficiency.

Description

Device for taking ilium cancellous bone

Technical Field

The experiment relates to medical equipment, in particular to a minimally invasive bone harvesting instrument.

Background

Bone grafting is a common operation in orthopedics. Wherein, the self-grafting bone has obvious advantages, and the ilium contains more cancellous bone and is the main bone source for clinical treatment. In the traditional bone grafting, a bone knife is used for directly taking bones, an incision is generally made through skin in the bone taking process, then the surface of an ilium is directly chiseled by using the bone knife, and a cancellous bone sheet with cortical bone is taken out. However, the operation of directly chiseling the ilium is difficult, massive bleeding of the bone surface can occur in the operation, residual ilium pain and residual ilium fracture risk exist after the bone surface is healed, the lateral femoral cutaneous nerve can be damaged by carelessness, and serious physical and psychological burden is caused to patients. Simultaneously, the cortical bone needs to be peeled off to the lamellar body of taking out, has increased the acquisition degree of difficulty of bone grafting material.

To this end, chinese patent CN201356614Y discloses a cancellous bone harvesting device, which uses a sharp spine and inclined and straight cutting edges to pierce and rotary cut cancellous bone, and contains cut cancellous bone components through a groove connected to the cutting edges. However, the threads in the groove can only engage a small area of the anterior end of the cut cancellous bone, and there is still a problem of slippage as cancellous bone is removed. Meanwhile, as the bone taking amount is increased, the bone taking area needs to be penetrated for many times, so that the bone taking operation becomes complicated, and the risk of iliac injury is aggravated. In addition, the bone taking amount of the cancellous bone is not easy to control, and the problem of aggravated complication risk caused by excessive bone taking exists.

Disclosure of Invention

The utility model aims to provide a device for taking ilium cancellous bone.

In order to achieve the purpose, the utility model adopts the following technical scheme:

including the body of rod, handle and spatula, the spatula sets up the one end at the body of rod, and the handle links to each other with the other end of the body of rod, and the handle is relative with the blade of spatula.

Preferably, the spatula is a bucket body, and the cutting edge of the spatula is formed by partial edge of the opening of the bucket body.

Preferably, the cutting edge of the spatula is arc-shaped.

Preferably, one end of the rod body is provided with a groove, and the groove is communicated with the spatula.

Preferably, the included angle between the edge of the opening of the groove and the cutting edge of the spatula is 85-95 degrees.

Preferably, the transverse section (perpendicular to the axial direction) of the groove is circular arc-shaped.

Preferably, the handle is T-shaped, and the surface of the handle is provided with an anti-skid structure.

The utility model has the beneficial effects that:

the scraping spoon with the cutting edge opposite to the handle is adopted, and the cutting edge of the scraping spoon can continuously cut cancellous bone layer by layer between the inner and outer plates of the ilium by advancing and retreating the handle, so that accidental injury of the ilium and nearby nerves in the bone taking process is effectively reduced, and the controllability of the bone grafting material (cancellous bone) taking amount is improved; meanwhile, the end part of the cut cancellous bone can be completely supported by the spatula, and the cancellous bone is prevented from sliding off when taken out. The utility model has the advantages of simple structure, low cost and convenient operation, and the taken-out cancellous bone has higher quality (no cortical bone and cancellous bone in particle shape) as a bone grafting material, thereby being beneficial to improving the bone grafting efficiency.

Further, the present invention can accommodate more cancellous bone and make it easier to remove bone by communicating the groove with the spatula.

Drawings

FIG. 1 is a schematic structural view (front view) of the device for taking ilium cancellous bone in the example;

FIG. 2 is a schematic structural view (top view) of the device for taking ilium cancellous bone in the example;

FIG. 3 is a schematic structural view (perspective view) of the device for taking iliac cancellous bone in the example;

in the figure: 1-a spatula, 2-a groove, 3-a rod body and 4-a handle.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. The examples are given solely for the purpose of illustration and are not intended to limit the scope of the utility model.

Referring to fig. 1, 2 and 3, the utility model provides a device for taking ilium cancellous bone, which comprises a spatula 1 and a rod body 3, wherein the rod body 3 comprises a cylindrical section and a section connected with the section and provided with a groove 2 (the cross section of the groove 2 is arc-shaped, and the diameter of the groove 2 is larger than that of the cylindrical section), the rear end of the cylindrical section is connected with a T-shaped handle 4, and the front end of the section provided with the groove 2 is connected with the spatula 1. The spatula 1 is a semi-ellipsoidal (cut along the minor axis of the ellipsoid) bucket, one part of the circular opening of which is butted with the end of the segment with the groove 2, so that the groove 2 is communicated with the spatula 1, and the other part (for example, the semi-circular opening edge) of the circular opening of the spatula 1 forms a cutting edge, and the plane where the cutting edge is located forms an included angle of 90 degrees with the opening edge of the groove 2 and is opposite to the T-shaped handle 4.

The device is divided into four specifications according to the diameter of the groove 2 of 5mm, 6mm, 7mm and 8 mm. The device of different specifications can be applicable to the crowd of different age brackets, that is to say the region of getting bone between the external plate in the ilium that adapts to different thickness.

The surface of the T-shaped handle 4 is processed into a rough surface, so that the T-shaped handle is convenient to hold and prevent slipping.

The operation flow of taking the ilium cancellous bone by utilizing the device is as follows:

1) drilling: finding an iliac spine node, and using an open awl or a osteotome commonly used in orthopaedics to open a bone access opening into an iliac bone along the iliac spine node so that the formed bone access opening extends into a certain distance along a cancellous bone part between an internal plate and an external plate of the iliac bone;

2) scraping: make the spatula 1 get into the ilium from getting the bone mouth in, pull T type handle 4 along certain angle (recess 2 orientation) up and down for the spongy bone on the corresponding side in the bone mouth is got in the blade successive layer cutting of spatula 1, then rotates T type handle 4 to other angles (change recess 2 orientation promptly), and continues up and down and pull T type handle 4, makes the blade successive layer cutting of spatula 1 get the spongy bone on other sides in the bone mouth.

3) After scraping cancellous bone at a certain angle or a plurality of different angles in one bone taking port according to the step 2), the scraping spoon 1 is completely withdrawn from the bone taking port by using the T-shaped handle 4, so that the scraped cancellous bone is taken out from the bone taking port.

The device for taking the ilium cancellous bone has the following characteristics:

1) the structure is reasonable, and the operation is convenient; enter from the inner and outer plates of the ilium, the recovery of the patient is fast after bone taking, and the complication is few.

2) Can fetch bones for many times along different directions, saves the operation time of the operation and improves the bone fetching efficiency.

3) The taken-out cancellous bone is granular and can be directly implanted into the fracture defect part of a patient, thereby playing a good role in bone formation and being beneficial to early healing of fracture.

Claims

1. A device for taking ilium cancellous bone is characterized in that: the scraper comprises a rod body (3), a handle (4) and a scraper spoon (1), wherein the scraper spoon (1) is arranged at one end of the rod body (3), the handle (4) is connected with the other end of the rod body (3), and the cutting edge of the handle (4) is opposite to that of the scraper spoon (1);

the spatula (1) is a semi-ellipsoidal bucket body, and the cutting edge of the spatula (1) is formed by half of the edge of the circular opening of the bucket body;

one end of the rod body (3) is provided with a groove (2), the cross section of the groove (2) is arc-shaped, the diameter of the groove is divided into four specifications of 5mm, 6mm, 7mm and 8mm, the other half edge of the circular opening of the bucket body is butted with the end part of the groove (2), and the groove (2) is communicated with the spatula (1).

2. The device for taking ilium cancellous bone according to claim 1, wherein: the cutting edge of the spatula (1) is arc-shaped.

3. The device for taking ilium cancellous bone according to claim 1, wherein: the included angle between the opening edge of the groove (2) and the cutting edge of the spatula (1) is 85-95 degrees.

4. The device for taking ilium cancellous bone according to claim 1, wherein: the cross section of the groove (2) is arc-shaped.

5. The device for taking ilium cancellous bone according to claim 1, wherein: the handle (4) is T-shaped, and the surface of the handle (4) is provided with an anti-skidding structure.