Blunt cartilage filler

Abstract

The utility model relates to a blunt cartilage filler which comprises a hard hollow rod, a blunt scraper and a handle, a hollow channel is arranged in the center of the hard hollow rod, and the blunt scraper is fixedly arranged at the first end of the hard hollow rod; the blunt scraper comprises a blunt flattening plate and a through hole formed in the center of the blunt flattening plate; the handle is fixedly arranged on the hard hollow rod in a sleeving manner, and the end part of the second end of the hard hollow rod penetrates out of the handle; an incident port is axially formed in the end part of the second end and is used for being communicated with an injection device; the separated and collected cartilage tissue of the patient or the cartilage tissue cultured in a laboratory sequentially passes through an incidence opening in the end part of the second end of the hard hollow rod, a hollow channel of the hard hollow rod and a through hole in the central position of a blunt end flattening plate of the blunt end scraper plate through an injection device and is directly filled into a cartilage injury part of the patient; the blunt-end scraper blade is used for scraping and compacting cartilage tissues filled into a cartilage injury part of a patient.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a blunt-head cartilage filler. Background Art

[0002] In clinical practice, cartilage tissue fragments are often generated during surgery on the knee joint, shoulder joint and other parts. In the prior art, on the one hand, the cartilage tissue fragments generated during the operation are introduced into a waste bucket together with the liquid and discarded, and the separation and reuse of the cartilage tissue fragments cannot be achieved; on the other hand, it is necessary to culture cartilage filling tissue in the laboratory to fill the patient's cartilage damage. This culture process takes more than one month, which is time-consuming and inconvenient. Especially when performing surgery in a field environment (such as during military operations or disaster relief), there are no conditions to meet the time-consuming requirement of culturing cartilage filling tissue, which causes serious difficulties for the operation.

[0003] After a lot of experiments and research and development, the applicant has developed a cartilage tissue separation device, which can be used in conjunction with a mobile operating vehicle to separate and collect the patient's own cartilage tissue. However, after the patient's own cartilage tissue is separated and collected, there is still a lack of supporting equipment for how to fill it into the patient's cartilage damage area. In the prior art, laboratory-cultured cartilage filling tissue is usually manually filled into the patient's cartilage damage area by a doctor, and the tools used are usually conventional tools used in surgery, such as scalpels, bone knives, bone files, scrapers, etc., and there are no special tools. The disadvantages of these conventional tools are that they have sharp blades, which can easily injure the patient, and they are not convenient to use, resulting in an uneven filling area and inability to be effectively compacted. Summary of the invention

[0004] The utility model aims to provide a blunt-head cartilage filler, and the technical problems to be solved include at least how to separate and collect the patient's own cartilage tissue and directly fill it into the patient's cartilage injury site, or to directly fill the cartilage filling tissue cultured in the laboratory into the patient's cartilage injury site, while ensuring that the filling site is flat, convenient and effective compaction is achieved, and avoiding harm to the patient.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a blunt-head cartilage filler, comprising a hard hollow rod, a blunt-head scraper and a handle, wherein the center of the hard hollow rod is provided with a hollow channel extending along the axial direction, and the blunt-head scraper is fixedly arranged at the first end portion of the hard hollow rod; the blunt-head scraper comprises a blunt-head flattening disk and a through hole arranged at the center position of the blunt-head flattening disk, and the through hole is connected with the hollow channel of the hard hollow rod; the handle is sleeved and fixed on the hard hollow rod, and the second end portion of the hard hollow rod passes through the handle and is exposed to the outside of the handle; the second end portion is provided with an axial inlet The inlet is used to communicate with an injection device, through which the separated and collected cartilage tissue of the patient himself or the cartilage tissue cultured in the laboratory is directly filled into the cartilage injury site of the patient through the inlet at the second end of the hard hollow rod, the hollow channel of the hard hollow rod and the through hole at the center position of the blunt flattening disk of the blunt scraper; the blunt scraper is used to flatten and compact the cartilage tissue filled into the cartilage injury site of the patient; the inner wall of the inlet at the second end is provided with an internal thread, or the outer wall of the inlet at the second end is provided with an external thread, which is used to be connected with the injection device through a thread.

[0006] Preferably, the angle α between the blunt flattening disk and the hard hollow rod is greater than 0 degrees and less than 90 degrees.

[0007] Preferably, the blunt flattening disc and the hard hollow rod are connected together by welding.

[0008] Preferably, the blunt flattening disc and the hard hollow rod are an integrally formed structure.

[0009] Preferably, the blunt flattening disc is circular or oval.

[0010] Preferably, the edge positions of the blunt flattening disc are all passivated and have no sharp edges.

[0011] Preferably, the handle comprises a truncated cone portion, a cylindrical portion and a disc portion, and the cylindrical portion is fixedly connected between the truncated cone portion and the disc portion.

[0012] Preferably, the outer diameter of the cylindrical portion is smaller than the outer diameter of the disc portion, and is also smaller than the outer diameter of the bottom surface of the truncated cone portion.

[0013] Beneficial Effects

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The blunt-tip cartilage filler of the utility model can directly fill the separated and collected cartilage tissue of the patient or the cartilage filling tissue cultured in the laboratory into the cartilage injury site of the patient, while ensuring that the filling site is flat and convenient for effective compaction. The top of the blunt-tip cartilage filler is a blunt-tip structure, and the outlet is set on the side, which can avoid hurting the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the technical solution of the utility model and constitute a part of the specification. Together with the specific implementation methods of the present application, they are used to explain the technical solution of the utility model and do not constitute a limitation on the technical solution of the utility model.

[0017] Figure 1 It is a structural schematic diagram of the blunt-head cartilage filler described in the utility model.

[0018] Figure 2 It is a front view of the blunt-head scraper described in the utility model. DETAILED DESCRIPTION

[0019] The present invention is described in more detail hereinafter to facilitate understanding of the present invention.

[0020] like Figure 1 to Figure 2 As shown, the blunt-headed cartilage filler described in the utility model includes a hard hollow rod 1, a blunt-headed scraper 2 and a handle 3. The center of the hard hollow rod 1 is provided with a hollow channel extending along the axial direction, and the blunt-headed scraper 2 is fixedly arranged at the first end portion of the hard hollow rod 1; the blunt-headed scraper 2 includes a blunt-headed flattening disk 21 and a through hole 22 arranged at the center position of the blunt-headed flattening disk 21, and the through hole 22 is connected to the hollow channel of the hard hollow rod 1; the handle 3 is sleeved and fixed on the hard hollow rod 1, and the second end portion 11 of the hard hollow rod 1 passes through the handle 3. The handle 3 is exposed on the outside of the handle 3; the second end portion 11 is axially provided with an inlet, which is used to be connected to an injection device, through which the separated and collected cartilage tissue of the patient himself or the cartilage tissue cultured in the laboratory is directly filled into the cartilage injury site of the patient through the inlet of the second end portion 11 of the hard hollow rod 1, the hollow channel of the hard hollow rod 1 and the through hole 22 at the center position of the blunt flattening disk 21 of the blunt scraper 2; the blunt scraper 2 is used to scrape and compact the cartilage tissue filled into the cartilage injury site of the patient.

[0021] Preferably, an internal thread is provided on the inner wall of the injection port of the second end portion 11 for connecting with the injection device through the thread.

[0022] Preferably, an external thread is provided on the outer wall of the injection port of the second end portion 11 for connecting with the injection device through the thread.

[0023] Preferably, the angle α between the blunt flattening disc 21 and the hard hollow rod 1 is greater than 0 degrees and less than 90 degrees.

[0024] Figure 1 The angle α between the blunt flattening disk 21 and the hard hollow rod 1 is described by an imaginary extension line 23 of the blunt flattening disk 21 .

[0025] By limiting the angle α to be greater than 0 degrees and less than 90 degrees, the outlet of the blunt-tipped cartilage filler of the present invention is arranged on the side, and the top of the blunt-tipped cartilage filler is a blunt-tipped structure, which can avoid harming the patient. Different angles α can adapt to different surgical positions, and doctors can select the appropriate angle α according to specific surgical conditions.

[0026] Preferably, the blunt flattening disc 21 and the hard hollow rod 1 are connected together by welding.

[0027] Preferably, the blunt flattening disc 21 and the hard hollow rod 1 are an integrally formed structure.

[0028] Preferably, the blunt flattening disc 21 is circular or oval.

[0029] Preferably, the edge positions of the blunt flattening disc 21 are all passivated and have no sharp edges.

[0030] Preferably, the handle 3 comprises a truncated cone portion 31 , a cylindrical portion 32 and a disc portion 33 , and the cylindrical portion 32 is fixedly connected between the truncated cone portion 31 and the disc portion 33 .

[0031] Preferably, the outer diameter of the cylindrical portion 32 is smaller than the outer diameter of the disc portion 33 , and is also smaller than the outer diameter of the bottom surface of the truncated cone portion 31 .

[0032] The above structure of the handle 3 is convenient for doctors to hold, and it is easier to apply force when using the blunt-tip cartilage filler of the present invention to scrape and compact the cartilage tissue filled into the cartilage injury site of the patient.

[0033] Preferably, the hard hollow rod 1 and the blunt-head scraper 2 are made of stainless steel, and the handle 3 is made of acrylonitrile-butadiene-styrene plastic or KRO-3 resin.

[0034] The blunt cartilage filler of the utility model can be used in conjunction with a mobile surgical vehicle. The mobile surgical vehicle includes a mechanical arm for generating thrust, and the thrust generated by the mechanical arm is used to push the injection device, so that the injection device can directly fill the separated and collected cartilage tissue of the patient himself or the cartilage tissue cultured in the laboratory into the cartilage injury site of the patient through the injection port of the second end 11 of the hard hollow rod 1, the hollow channel of the hard hollow rod 1 and the through hole 22 at the center of the blunt flattening disk 21 of the blunt scraper 2.

[0035] When the blunt cartilage filler of the utility model is used, the separated and collected cartilage tissue of the patient or the cartilage tissue cultured in the laboratory is first loaded into the injection device, the inlet of the second end 11 of the hard hollow rod 1 is connected to the injection device, the through hole 22 at the center of the blunt flattening disk 21 of the blunt scraper 2 is inserted into the cartilage injury site of the patient, and the mechanical arm is started. The thrust generated by the mechanical arm conforming to the thrust function pushes the injection device, so that the injection device directly fills the separated and collected cartilage tissue of the patient or the cartilage tissue cultured in the laboratory into the cartilage injury site of the patient through the inlet of the second end 11 of the hard hollow rod 1, the hollow channel of the hard hollow rod 1 and the through hole 22 at the center of the blunt flattening disk 21 of the blunt scraper 2. During the filling process, the doctor can use the blunt flattening disk 21 of the blunt scraper 2 to scrape and compact the cartilage tissue filled into the cartilage injury site of the patient.

[0036] When it is observed through arthroscopy or other imaging methods that the patient's cartilage damage has been filled to the appropriate position, the robotic arm can be closed.

[0037] The above describes the preferred embodiments of the present invention, but it is not intended to limit the present invention. Those skilled in the art may make improvements and changes to the embodiments disclosed herein without departing from the scope and spirit of the present invention.

Claims

1. A blunt cartilage filler, characterized in that: The blunt-head cartilage filler comprises a hard hollow rod, a blunt-head scraper and a handle, wherein a hollow channel extending along the axial direction is arranged at the center of the hard hollow rod, and the blunt-head scraper is fixedly arranged at the first end of the hard hollow rod; the blunt-head scraper comprises a blunt-head flattening disk and a through hole arranged at the center position of the blunt-head flattening disk, and the through hole is connected with the hollow channel of the hard hollow rod; the handle is sleeved and fixed on the hard hollow rod, and the second end of the hard hollow rod passes through the handle and is exposed to the outside of the handle; an inlet is opened axially at the second end, and the inlet is used to communicate with the The hard hollow rod is connected to an injection device, through which the separated and collected cartilage tissue of the patient himself or the cartilage tissue cultured in the laboratory is directly filled into the cartilage injury site of the patient through the inlet at the second end of the hard hollow rod, the hollow channel of the hard hollow rod and the through hole at the center position of the blunt flattening disk of the blunt scraper; the blunt scraper is used to flatten and compact the cartilage tissue filled into the cartilage injury site of the patient; the inner wall of the inlet at the second end is provided with an internal thread, or the outer wall of the inlet at the second end is provided with an external thread, which is used to be connected with the injection device through a thread.

2. The blunt-tip cartilage filler according to claim 1, characterized in that: The included angle α between the blunt flattening disk and the hard hollow rod is greater than 0 degrees and less than 90 degrees.

3. The blunt-tip cartilage filler according to claim 1, characterized in that: The blunt flattening disc and the hard hollow rod are connected together by welding.

4. The blunt-tip cartilage filler according to claim 1, characterized in that: The blunt flattening disc and the hard hollow rod are an integrally formed structure.

5. The blunt-tip cartilage filler according to claim 1, characterized in that: The blunt flattening disc is circular or oval.

6. The blunt-tip cartilage filler according to claim 1, characterized in that: The edge positions of the blunt flattening disc are all passivated and have no sharp edges.

7. The blunt-tip cartilage filler according to claim 1, characterized in that: The handle comprises a truncated cone portion, a cylindrical portion and a disc portion, and the cylindrical portion is fixedly connected between the truncated cone portion and the disc portion.

8. The blunt-tip cartilage filler according to claim 7, characterized in that: The outer diameter of the cylindrical portion is smaller than the outer diameter of the disc portion, and is also smaller than the outer diameter of the bottom surface of the truncated cone portion.

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