A cartilage endplate resection device and its use method

Abstract

The invention discloses a cartilage endplate resector and a method for using the same, comprising: an upper head, a lower head, a movable arm, a fixed arm, and a handle; the lower head is fixedly connected to the front end of the fixed arm, the upper head is movably connected to the front end pin of the movable arm, the tail of the upper head is connected to the spring wire in the movable arm, and the spring wire is connected to the handle; the movable arm and the fixed arm are both connected to the handle; a through hole is provided in the middle of the upper head; a micro blade is provided on the edge of the upper head; the method for using the same is as follows: holding the handle, the lower head is shoveled into the intervertebral space, the cartilage endplate is pried off, the handle is held tightly to control the upper head, the micro blade of the upper head is engaged with the groove of the lower head, the cartilage endplate is cut off, the cut cartilage endplate is stuck in the through hole of the upper head, and finally the cartilage endplate is removed. The invention can quickly separate the cartilage endplate from the bony endplate, shorten the operation time, facilitate operation in the narrow intervertebral space, reduce the operation cost, and facilitate the rapid recovery of the patient.

Description

Technical Field

[0001] The present invention relates to the research field of medical instruments, and in particular to a cartilage endplate resector and a use method thereof. Background Art

[0002] In disc surgery, the entire disc, nucleus pulposus tissue, and annulus fibrosus need to be removed, and then the endplate on the surface of the vertebral body needs to be removed. The cartilage endplate is dense and fits very closely with the bony endplate; the cartilage endplate is tough and not easy to break when scraped off, and the cartilage endplate is flocculent when scraped off, which makes it difficult to scrape it clean. The whole process is time-consuming and laborious.

[0003] There are three existing clinical methods for scraping cartilage endplates.

[0004] The first method uses a scraper to slowly scrape the cartilage end plate, which takes a lot of time and is not easy to scrape cleanly. The entire operation will take a long time to scrape the cartilage end plate, resulting in prolonged anesthesia time for the patient, increased costs, and is not conducive to the patient's rapid recovery.

[0005] The second method uses nucleus pulposus forceps. When using nucleus pulposus forceps, the cartilage endplate will become filamentous. The nucleus pulposus forceps have no cutting effect and cannot cut off the filamentous cartilage endplate. In addition, some flocculent cartilage endplates are accompanied during the nucleus pulposus forceps biting and cannot be scraped off. The head of the nucleus pulposus forceps is too thick, and the degree of opening after entering the intervertebral space is limited. Only a little cartilage endplate can be bitten each time, which prolongs the operation time, resulting in prolonged anesthesia time for the patient, increased costs, and is not conducive to the patient's rapid recovery.

[0006] The third method uses a scraper in combination with a nucleus pulposus forceps, but the above-mentioned operation time is still too long, resulting in prolonged anesthesia time for the patient, increased costs, and is not conducive to the patient's rapid recovery. Summary of the invention

[0007] The present invention aims to provide a cartilage endplate resector and a method for using the same, which can quickly separate the cartilage endplate from the bony endplate, shorten the operation time, facilitate operation in a narrow intervertebral space, reduce the cost of the operation, and facilitate the rapid recovery of the patient.

[0008] In order to achieve the above-mentioned purpose, the present invention provides a cartilage endplate resector, comprising: an upper head, a lower head, a movable arm, a fixed arm, and a handle; the lower head is fixedly connected to the front end of the fixed arm, the upper head is movably connected to the front end pin of the movable arm, the tail of the upper head is connected to the spring wire in the movable arm, and the spring wire is connected to the handle; the movable arm and the fixed arm are both connected to the handle; a through hole is provided in the middle of the upper head; and a micro blade is provided on the edge of the upper head.

[0009] Preferably, the edge of the lower head is provided with a groove, and the groove is adapted to the micro blade of the upper head.

[0010] Preferably, the lower head is in an oval shovel shape.

[0011] Preferably, the upper head is oval-shaped.

[0012] Preferably, the upper head, the lower head, the movable arm and the fixed arm are coaxial.

[0013] Preferably, the horizontal angle between the axis of the upper head and the lower head and the axis of the movable arm and the fixed arm is 30°.

[0014] Preferably, the horizontal angle between the axis of the upper head and the lower head and the axis of the movable arm and the fixed arm is -30°.

[0015] Preferably, the micro blade is in the shape of an annular sheet, and the cutting edge of the micro blade faces downward.

[0016] Further, the method of using the cartilage endplate resector:

[0017] Hold the handle and shovel the lower head into the gap between the cartilage endplate and the bony endplate. After inserting it, pry off the cartilage endplate. After prying off the cartilage endplate, hold the handle tightly to control the upper head so that the micro blade of the upper head engages with the groove of the lower head to cut off the cartilage endplate. The cut cartilage endplate is stuck in the through hole of the upper head, and finally the cartilage endplate is removed.

[0018] The present invention has the following beneficial effects:

[0019] 1. After the cartilage endplate is pried and peeled with the front shovel blade, a larger area of ​​cartilage endplate can be removed at one time, shortening the operation time and increasing the safety of the operation;

[0020] 2. Easy to operate in narrow intervertebral space;

[0021] 3. Reduced surgical costs;

[0022] 4. It is conducive to the rapid recovery of patients. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0024] Figure 2 for Figure 1 A structural diagram of the view in the middle;

[0025] Figure 3 It is a structural schematic diagram of the meshing surface of the lower head and the upper head;

[0026] In the figure: 1-upper head, 101-micro blade, 102-through hole, 2-lower head, 201-groove, 3-movable arm, 4-fixed arm, 5-handle. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings.

[0028] A cartilage endplate resector of the present invention comprises: an upper head 1, a lower head 2, a movable arm 3, a fixed arm 4, and a handle 5; the lower head 2 is fixedly connected to the front end of the fixed arm 4, the upper head 2 is movably connected to the front end pin of the movable arm 3, the tail of the upper head 1 is connected to the spring wire in the movable arm 3, and the spring wire is connected to the handle 5; the movable arm 3 and the fixed arm 4 are both connected to the handle 5); a through hole 102 is provided in the middle of the upper head 1; a micro blade 101 is provided at the edge of the upper head 1.

[0029] Preferably, a groove 201 is provided on the edge of the lower head 2 , and the groove 201 is matched with the micro blade 101 of the upper head 1 .

[0030] Preferably, the lower head 2 is in an elliptical shovel shape.

[0031] Preferably, the upper head 1 is oval-shaped.

[0032] Preferably, the upper head 1 , the lower head 2 , the movable arm 3 , and the fixed arm 4 are coaxial.

[0033] Preferably, the horizontal angle between the axis of the upper head 1, the lower head 2 and the axis of the movable arm 3, the fixed arm 4 is 30°.

[0034] Preferably, the horizontal angle between the axis of the upper head 1, the lower head 2 and the axis of the movable arm 3, the fixed arm 4 is -30°.

[0035] Preferably, the micro blade 101 is in the shape of an annular sheet, and the blade of the micro blade 101 faces downward.

[0036] Further, the method of using the cartilage endplate resector:

[0037] Holding the handle 5, the lower head 2 is shoveled into the gap between the cartilage endplate and the bony endplate. After being inserted, the cartilage endplate is pried off. After the cartilage endplate is pried off, the handle 5 is held tightly to control the upper head 1 so that the micro blade 101 of the upper head 1 engages with the groove 201 of the lower head 2 to cut off the cartilage endplate. The cut cartilage endplate is stuck in the through hole 102 of the upper head 1, and finally the cartilage endplate is taken out.

[0038] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field may make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A cartilage endplate resectometer, characterized in that: include: An upper head (1), a lower head (2), a movable arm (3), a fixed arm (4), and a handle (5); The lower head (2) is fixedly connected to the front end of the fixed arm (4), the upper head (1) is movably connected to the front end pin of the movable arm (3), the tail of the upper head (1) is connected to the spring wire in the movable arm (3), and the spring wire is connected to the handle (5); the movable arm (3) and the fixed arm (4) are both connected to the handle (5); a through hole (102) is provided in the middle of the upper head (1), and the cut cartilage end plate is stuck in the through hole of the upper head; a micro blade (101) is provided on the edge of the upper head (1); a groove (201) is provided on the edge of the lower head (2), and the groove (201) is adapted to the micro blade (101) of the upper head (1); the micro blade (101) is in the shape of an annular sheet, and the blade of the micro blade (101) faces downward; the lower head (2) is in the shape of an elliptical shovel, and the upper head (1) is in the shape of an elliptical.

2. The cartilage endplate resection device according to claim 1, characterized in that: The upper head (1), the lower head (2), the movable arm (3) and the fixed arm (4) are coaxial.

3. The cartilage endplate resection device according to claim 1, characterized in that: The horizontal angle between the axis of the upper head (1) and the lower head (2) and the axis of the movable arm (3) and the fixed arm (4) is 30°.

4. The cartilage endplate resection device according to claim 1, characterized in that: The horizontal angle between the axis of the upper head (1) and the lower head (2) and the axis of the movable arm (3) and the fixed arm (4) is -30°.

Images