CN213489567U - Multifunctional osteochondral transplantation device - Google Patents
Multifunctional osteochondral transplantation device Download PDFInfo
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- CN213489567U CN213489567U CN202021623567.1U CN202021623567U CN213489567U CN 213489567 U CN213489567 U CN 213489567U CN 202021623567 U CN202021623567 U CN 202021623567U CN 213489567 U CN213489567 U CN 213489567U
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- cartilage
- sleeve
- multifunctional
- shaping sleeve
- osteochondral
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- 238000002054 transplantation Methods 0.000 title claims abstract description 17
- 210000000845 cartilage Anatomy 0.000 claims abstract description 136
- 238000007493 shaping process Methods 0.000 claims abstract description 49
- 238000005520 cutting process Methods 0.000 claims abstract description 17
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 238000013461 design Methods 0.000 claims description 10
- 238000004513 sizing Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 210000000988 bone and bone Anatomy 0.000 description 21
- 230000007547 defect Effects 0.000 description 12
- 238000002513 implantation Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000003825 pressing Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007943 implant Substances 0.000 description 3
- 210000001519 tissue Anatomy 0.000 description 3
- 201000009859 Osteochondrosis Diseases 0.000 description 2
- 210000001188 articular cartilage Anatomy 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 210000000629 knee joint Anatomy 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 210000004872 soft tissue Anatomy 0.000 description 2
- 206010007710 Cartilage injury Diseases 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 210000005065 subchondral bone plate Anatomy 0.000 description 1
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Abstract
The utility model belongs to the technical field of medical instrument, concretely relates to multi-functional osteochondral transplantation device. The device specifically comprises a cylindrical cartilage shaping sleeve, wherein the front end of the cartilage shaping sleeve is provided with a cutting edge; the inner wall of the cartilage shaping sleeve is provided with a convex strip parallel to the axis of the cartilage shaping sleeve, the convex strip is a pointed top, the tip of the convex strip extends gradually to be smoothly connected with the inner wall of the cartilage shaping sleeve, and the cartilage ejects out a block and a feeding mechanism; the feeding mechanism is connected with the holding sleeve, and the cartilage ejection block is nested in the cartilage shaping sleeve in a sliding mode and is connected with the output end of the feeding mechanism. The end of the holding sleeve far away from the cartilage shaping sleeve is provided with a pair of handles which are beneficial to the rotation of the instrument in the operation; the tiny convex strips on the cartilage shaping sleeve can increase the holding of the extracted cartilage column during rotation. The instrument can ensure minimally invasive operation in an arthroscopic channel, can be used for open operation, can greatly save operation time and improve operation efficiency.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, concretely relates to multi-functional osteochondral transplantation device.
Background
Introduction of osteochondral transplantation technique: the osteochondral transplantation technology mainly aims at utilizing autologous osteochondral tissues in a non-load bearing area as donors for transplantation and repairing damaged articular cartilage in the load bearing area.
According to the size and shape of cartilage damage in a knee joint load bearing area (a receiving area), preparing a circular osteochondral defect with a certain depth by using a circular drill, and in a normal cartilage area (a supply area) of knee joint non-load bearing, drilling a osteochondral column with the same diameter, size and length as the defect in the receiving area by using the circular drill to transplant the receiving area. Or the defect area of the receiving area is large, the area of the supply area is limited, and a plurality of osteochondral columns need to be transplanted for transplantation.
The surgical instruments currently used have the following disadvantages: firstly, the trephine is smooth in the interior, no holding force is applied to tissues taken in the trephine, and the rotary trephine cannot guarantee that the bone soft tissue column is completely separated from a knife edge, so that the required length of the transplanted bone soft tissue column is guaranteed. Secondly, the cartilage column is easily damaged in the process that partial instruments need to take out the taken-out cartilage column from the instrument and then implant the cartilage column into the defect part, and the cartilage column is easily damaged, particularly the separation of cartilage and subchondral bone, so that the size and the shape of the transplantation block are not completely matched with those of the defect area, and the effect of transplantation operation is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems that the trephine adopted in the existing osteochondral transplantation operation has smooth inner part and does not have good holding force when drilling into the cartilage tissue; the rest used surgical instruments have single functions, and the cartilage blocks are easily damaged in the process of repeatedly taking out the surgical instruments, so that the effect of the transplantation operation is influenced.
Furthermore, the utility model provides a multifunctional osteochondral transplantation device; the cartilage shaping sleeve comprises a cylindrical cartilage shaping sleeve, wherein the front end of the cartilage shaping sleeve is provided with a cutting edge; the inner wall of the cartilage shaping sleeve is provided with a convex strip parallel to the axis of the cartilage shaping sleeve, and the convex strip is a pointed tip and the tip gradually extends to be smoothly connected with the inner wall of the cartilage shaping sleeve. Inserting the cartilage shaping sleeve into bone tissue, embedding the raised lines in the target osteochondral in a clamping manner, rotationally taking down the target osteochondral, clamping the target osteochondral by the raised lines, and preventing the cartilage shaping sleeve from slipping; ensure that the cartilage column in the sleeve is completely separated from the cutting edge, and ensure the length of the transplanted cartilage column. The tail end of each convex strip is tapered towards the cartilage shaping sleeve from the top, so that the convex strips can be conveniently inserted into target bone cartilage.
Further, the cartilage shaping device also comprises a holding sleeve coaxially connected with the cartilage shaping sleeve, wherein a handle is arranged on the holding sleeve, so that the cartilage shaping device is convenient to hold in the operation; the holding sleeve is provided with a top cap; the top cap is thickened for hitting during operation.
Further, the device also comprises a cartilage ejection block and a feeding mechanism; the feeding mechanism is connected with the holding sleeve, and the cartilage ejection block is nested in the cartilage shaping sleeve in a sliding mode and is connected with the output end of the feeding mechanism.
Furthermore, the feeding mechanism is a rotary feeding mechanism and comprises an axial moving rod and a circumferential rotating part, the circumferential rotating part is rotatably connected with the holding sleeve and can only circumferentially rotate, and part of the circumferential rotating part is leaked from the holding sleeve; the axial moving rod is connected with the circumferential rotating part, and the circumferential rotating part drives the axial moving rod to extend and retract relative to the holding sleeve through rotation; the axial moving rod is connected with a guide structure; the top end of the axial moving rod is connected with a limiting block; the top cap is in threaded connection with the holding sleeve. Through rotatory circumference rotating part, and then drive axial carriage release lever, ejecting out the cartilage through cartilage ejection block, more laborsaving during the rotary feeding mechanism uses, can produce great thrust. The limiting block is used for limiting the limit displacement of the axial moving rod and preventing the axial moving rod from slipping off from the circumferential rotating part.
Furthermore, the bottom end of the axial moving rod is fixedly connected with the cartilage ejection block, a notch matched with the convex strip is formed in the cartilage ejection block, and the cartilage ejection block and the convex strip are matched to form the guide structure.
Furthermore, a limiting guide plate is inserted into the axial moving rod and located below the limiting block, a guide groove parallel to the axis of the holding sleeve is formed in the inner wall of the holding sleeve, and the limiting guide plate and the guide groove are inserted in a sliding mode to form the guide structure.
Furthermore, the tips of the convex strips gradually extend to be smoothly connected with the cutting edge of the cartilage shaping sleeve.
Further, the opening that has vertical setting on the cartilage design sleeve, the long limit of opening is followed cartilage design sleeve axis direction, be carved with the scale mark on the long limit of opening. The length of the bone cartilage column can be quantitatively observed.
Furthermore, the scale mark is marked from 0 scale from the cutting edge of the cartilage shaping sleeve to the holding sleeve in sequence, and the distance from the cutting edge of the cartilage shaping sleeve to the bottom edge of the opening is 0.5 cm.
Furthermore, the inner wall of the cartilage shaping sleeve is provided with three convex strips which are distributed at equal intervals.
Compared with the prior art, the utility model has the advantages that:
the utility model provides a multifunctional osteochondral transplantation device, one end of a holding sleeve far away from a cartilage shaping sleeve is provided with a pair of handles, which is helpful for the rotation of an instrument in the operation; the holding sleeve is connected with a top cap through threads, and the top cap is thickened for hitting in the operation; the side wall of the cartilage shaping sleeve is provided with three rectangular observation windows, and the long sides of the observation windows are provided with scale scales, so that the length of the cartilage column to be taken can be quantitatively observed, and the preparation depth of a cartilage defect area and the length of the transplanted cartilage column can be accurately matched; the small triangular prism-shaped convex strips between the windows of the cartilage shaping sleeve can increase the holding of the cartilage column of the sleeve during rotation, ensure that the cartilage column in the sleeve is completely separated from the cutting edge, ensure the length of the transplanted cartilage column and finish the taking out. The sleeve is internally provided with a rotary ejector rod which can rotatably eject the osteochondral column into a bone defect area, and the articular surface is knocked by utilizing the screwed cartilage ejection plate, so that the osteochondral column is taken out and implanted at one time. The instrument can ensure minimally invasive operation in an arthroscopic channel, can be used for open operation, can greatly save operation time and improve operation efficiency.
Drawings
Fig. 1 is a schematic structural diagram of the first embodiment.
Fig. 2 is a schematic view of the engagement between the position-limiting guide plate and the guide groove in the first embodiment.
Fig. 3 is a schematic structural view of the cartilage setting sleeve.
Fig. 4 is a schematic structural diagram of the second embodiment.
Fig. 5 is a schematic structural diagram of the third embodiment.
Fig. 6 is a schematic structural diagram of a fourth embodiment.
Fig. 7 is a schematic structural diagram of a fifth embodiment.
In the figure: 1-cartilage shaping sleeve; 101-convex strips; 102-cutting edge; 103-graduation mark; 104-port; 2-a nut; 3-holding the sleeve; 301-a guide slot; 4-a handle; 5-top cap; 6-a restriction block; 7-limiting guide plates; 8-a threaded ejector rod; 9-pressing a cap; 10-cartilage liftout plate; 11-a guide sleeve; 12-a screw ejector pin; 1201-spiral groove; 13-a rotator wheel; 1301-guide bar.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
The first embodiment;
as shown in fig. 1, 2 and 3, the multifunctional osteochondral transplantation device comprises a cylindrical cartilage sizing sleeve 1 and a holding sleeve 3 integrally connected with the cartilage sizing sleeve 1, wherein the cartilage sizing sleeve 1 and the holding sleeve 3 are coaxial. Two handles 4 are symmetrically arranged on the holding sleeve 3, and anti-skid grains are arranged on the surfaces of the handles 4. The gripping sleeve 3 is provided with a top cap 5, the top cap 5 is thickened and used for beating in an operation, and the top cap 5 is in threaded connection with the gripping sleeve 3.
The front end of the cartilage shaping sleeve 1 is provided with a cutting edge 102; for insertion into bone tissue. The inner wall of the cartilage shaping sleeve 1 is provided with 3 convex strips 101 parallel to the axis of the cartilage shaping sleeve, and the three convex strips 101 are distributed around the inner wall of the cartilage shaping sleeve at equal intervals. The convex strip 101 is a pointed tip, and the tip of the convex strip 101 gradually extends to be smoothly connected with the cutting edge 102 of the cartilage shaping sleeve 1. The triangular prism-shaped convex strips 101 clamp the target bone cartilage and are convenient to screw and take down. The blade is sharp, can easily penetrate the cartilage surface, and the spire of three sand grips 101 links up with the cutting edge inner wall is level and smooth at the cutting edge end. The three convex strips 101 occupy a small volume in the cartilage shaping sleeve 1, so that the three convex strips can provide good holding force and cannot cause great damage to the taken bone blocks to further influence the transplanting effect.
The device also comprises a cartilage ejection block, a thread ejection rod 8 and a nut 2, wherein the thread ejection rod 8 and the nut 2 form a rotary feeding mechanism; the cartilage ejection block is nested in the cartilage shaping sleeve 1 in a sliding mode and is connected with the bottom end of the threaded ejection rod 8. The cartilage ejection block consists of a cartilage ejection plate 10 and a pressing cap 9, the bottom end of the threaded ejection rod 8 is provided with a boss structure, and the pressing cap 9 is in threaded connection with the cartilage ejection plate 10 and covers the boss of the threaded ejection rod 8 as shown in fig. 1; due to the arrangement, the cartilage ejection plate 10 is convenient to replace, and the cartilage ejection plate 10 is made of hard plastic and is inevitably worn and hyperpigmented after being used for a long time; and is convenient to take down for disinfection. The cartilage ejecting plate 10 is provided with a notch matched with the convex strip 101.
Have the opening 104 of 3 vertical settings on the cartilage design sleeve 1, opening 104 is located between the sand grip 101, the long limit of opening 104 is followed 1 axis direction of cartilage design sleeve, the scale mark 103 is carved with on the long limit of opening 104. In order to accurately draw materials and facilitate identification under a microscope, 1mm is a small grid 1, 5mm is a medium grid 1 and 10mm is a large grid 1. The scale marks are marked from the cutting edge 102 of the cartilage shaping sleeve 1 to the holding sleeve 3 from 0 scale in sequence, and the distance from the cutting edge 102 of the cartilage shaping sleeve 1 to the bottom edge of the opening 104 is 0.5 cm. The long side of port 104 is 2.5cm, the distance from edge 102 to the top side of port 104 is 3.0cm, and the total mark scale is 3.0 cm.
When the device is disassembled and assembled, the top cap 5 is taken down, then the limiting block 6 is taken down, then the limiting guide plate 7 is taken down, the nut 2 is rotated until the thread ejection rod 8 is separated, and then the pressing cap 9 is taken down; and (5) completely disassembling. During assembly, the installation is carried out according to the reverse sequence of the steps.
Example two;
the difference between this embodiment and the first embodiment is; the thread ejector rod 8 is not provided with a polygonal column body and a connecting limiting guide plate 7, and the inner wall of the holding sleeve 3 is not provided with a guide groove 301. The limit function of the screw ejector rod 8 is performed by the engagement of the notch of the cartilage ejector plate 10 and the convex strip 101. The limiting block 6 is appropriately widened, and the limiting block 6 is used for preventing the threaded ejector rod 8 from slipping off the nut 2.
Example three;
as shown in fig. 5; the difference between this embodiment and the first embodiment is; the thread ejector rod 8 is provided with a polygonal cylinder section which is as long as the thread section of the body of the thread ejector rod, and the width of the cross section of the polygonal cylinder is smaller than the minimum diameter of the thread section. A guide sleeve 11 is arranged in the holding sleeve 3, the guide sleeve 11 is in sliding connection with the polygonal column body section, and the rotation of the threaded ejector rod 8 is limited.
Example four;
as shown in fig. 6; the present embodiment is different from embodiment 3 in that; the length of the nut 2 is more than 2 times the length of the thread section on the thread ejector rod 8. The length of the cartilage column to be taken during the operation is usually 2-3cm, so that the length of the nut 2 is 4.5cm and the length of the thread section on the thread ejector rod 8 is set to be 1 cm. The longer nut 2 is more conducive to grip rotation.
Example five;
as shown in fig. 7; the difference between this embodiment and the first embodiment is; the rotating wheel 13 and the spiral ejecting rod 12 form a rotary feeding mechanism. The screw ejector rod 12 is provided with a screw groove 1201 surrounding the body thereof, the inner wall of the rotating wheel 13 is provided with a guide rod 1301, and the guide rod 1301 partially extends into the screw groove 1201. The rotating wheel 13 rotates and the guide 1301 shifts the screw ejector rod 12. The rotating wheel 13 is arranged in the holding sleeve 3, two annular baffles are arranged in the holding sleeve 3, two ends of the rotating wheel 13 are inserted and sleeved on the baffles, and the baffles limit the rotating wheel 13 to only rotate circumferentially and not move axially. The side of the baffle close to the nut 2 is provided with an annular bulge, and the annular bulge is contacted with the rotating wheel 13 to reduce the friction force when the rotating wheel 13 rotates. Two windows with rectangular projection surfaces are symmetrically arranged on the holding sleeve 3 and used for leaking out the circular side part of the rotating wheel 13 and rotating the rotating wheel 13 outside the holding sleeve 3. The side surface of the ring of the rotating wheel 13 is provided with anti-skid lines. The upper front section of the spiral ejecting rod 12 is a polygonal column body, a limiting guide plate 7 is sleeved on the polygonal column body, the inner wall of the holding sleeve 3 is provided with a guide groove 301 parallel to the axis of the holding sleeve, and the limiting guide plate 7 is in sliding insertion connection with the guide groove 301. The screw ejection rod 12 is in threaded connection with a limiting block 6, and the limiting block 6 is used for fastening a limiting guide plate 7. The limiting guide plate 7 is matched with the guide groove 301 to limit the rotation of the spiral ejecting rod 12, when an external force rotates the rotating wheel 13, the spiral ejecting rod 12 moves back and forth, and the cartilage ejecting plate 10 is pushed to eject the osteochondral bone.
In the embodiments 1, 2, 3, 4, 5 and the corresponding drawings, the length of the thread section on the thread ejector rod 8 is 4-5cm, the thickness of the nut 2 is 1cm, and the minimum displacement distance of the cartilage ejector block is 3cm, so that the requirement of cutting the length of the osteochondral column in the operation is met. In the actual production of the device, the lengths of the cartilage shaping sleeve 1 and the thread ejection rod 8 can be prolonged according to different operation requirements.
The utility model discloses mainly be applied to and carry out one step of operation of wicresoft under the arthroscope and target in place.
1) Firstly, preparing a cylindrical osteochondral implantation area with a proper diameter at a cartilage defect part according to the defect size of articular cartilage: according to the size of cartilage defect, the instrument with the proper diameter is selected, and the top cap 5 is knocked to enable the cartilage shaping sleeve 1 to enter the damaged cartilage transplantation area. Through observing cartilage design sleeve 1 surface scale, can quantitative cartilage defect depth, the little sand grip 101 of mitsubishi cylindricality between each opening 104 of cartilage design sleeve 1 locks the cartilage post, through rotating the apparatus, can ensure that the cartilage post is twisted off from the apparatus end, ensures that the cartilage post is complete to take out. Preparing the osteochondral implantation area with proper depth and diameter, and keeping the osteochondral column in the device for later use.
2) Obtaining a non-bearing area transplanted bone cartilage column: according to the diameter of the prepared osteochondral implantation area, another instrument with the same diameter is adopted, cartilage is knocked into the non-load-bearing supply area, scales on the surface of the cartilage shaping sleeve 1 are observed, the cartilage is knocked into the cartilage area quantitatively to the same depth as the transplanting area, triangular prism-shaped micro convex strips 101 among all through holes 104 of the cartilage shaping sleeve 1 lock the osteochondral column, and the osteochondral column can be assuredly screwed off from the tail end of the instrument through a rotating instrument. Meanwhile, the length of the bone cartilage column is observed through the position of the through opening 104, and the bone cartilage column is completely taken out. And obtaining a columnar osteochondral column with the same diameter and length in a non-load bearing area, and keeping the columnar osteochondral column in the instrument sizing sleeve.
3) Implanting the osteochondral column implant area: under arthroscopic monitoring, the distal end of the instrument is aligned with the graft. The threaded ejector rod 8 is enabled to eject the drilled osteochondral column out step by rotating the nut 2, and the drilled osteochondral column enters the osteochondral implantation area. Meanwhile, the cartilage ejection plate 10 can be used as a knocking instrument to knock the surface of the transplanted articular surface, so that the smoothness of the transplanted bone cartilage block and the host cartilage is guaranteed.
4) And (3) taking out the osteochondral column for implantation in an area: in order to promote the repair of the osteochondral defect of the donor area, the osteochondral column removed from the graft area is subjected to donor area implantation. And (3) placing the first part of the bone cartilage column acquisition instrument into a joint cavity, aligning the first part of the bone cartilage column acquisition instrument with the defect part of the supply area, and gradually ejecting the drilled bone cartilage column out by the threaded ejector rod 8 by rotating the nut 2 to enter the defect of the supply area. Through the knocking of the tail end of the instrument, the cartilage column of the bone is ground and the instrument is taken out, so that the operation is finished.
After the bone cartilage column is transplanted, the bone cartilage column implant block is fused with the receptor tissue for regrowth.
The instrument can ensure minimally invasive operation in an arthroscopic channel, can be used for open operation, can greatly save operation time and improve operation efficiency.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A multifunctional osteochondral transplantation device comprises a cylindrical cartilage sizing sleeve, wherein the front end of the cartilage sizing sleeve is provided with a cutting edge; the method is characterized in that: the inner wall of the cartilage shaping sleeve is provided with a convex strip parallel to the axis of the cartilage shaping sleeve, and the convex strip is a pointed tip and the tip gradually extends to be smoothly connected with the inner wall of the cartilage shaping sleeve.
2. The multifunctional osteochondral graft device of claim 1, wherein: the cartilage shaping sleeve is coaxially connected with the cartilage shaping sleeve, a handle is arranged on the gripping sleeve, and a top cap is arranged on the gripping sleeve.
3. The multifunctional osteochondral graft device of claim 2, wherein: the device also comprises a cartilage ejection block and a feeding mechanism; the feeding mechanism is connected with the holding sleeve, and the cartilage ejection block is nested in the cartilage shaping sleeve in a sliding mode and is connected with the output end of the feeding mechanism.
4. The multifunctional osteochondral graft device of claim 3, wherein: the feeding mechanism is a rotary feeding mechanism and comprises an axial moving rod and a circumferential rotating part, the circumferential rotating part is rotatably connected with the holding sleeve and only can circumferentially rotate, and part of the circumferential rotating part is leaked from the holding sleeve; the axial moving rod is connected with the circumferential rotating part, and the circumferential rotating part drives the axial moving rod to extend and retract relative to the holding sleeve through rotation; the axial moving rod is connected with a guide structure; the top end of the axial moving rod is connected with a limiting block; the top cap is in threaded connection with the holding sleeve.
5. The multifunctional osteochondral graft device of claim 4, wherein: the bottom end of the axial moving rod is fixedly connected with the cartilage ejection block, a notch matched with the convex strip is formed in the cartilage ejection block, and the cartilage ejection block and the convex strip are matched to form the guide structure.
6. The multifunctional osteochondral graft device of claim 4, wherein: the axial moving rod is inserted with a limiting guide plate, the limiting guide plate is positioned below the limiting block, the inner wall of the holding sleeve is provided with a guide groove parallel to the axis of the holding sleeve, and the limiting guide plate and the guide groove are inserted in a sliding mode to form the guide structure.
7. The multifunctional osteochondral graft device of claim 1, wherein: the tip of sand grip gradually extends to and forms the cutting edge smooth joint of sleeve with the cartilage.
8. The multifunctional osteochondral graft device of claim 1, wherein: the opening that has vertical setting on the cartilage design sleeve, the long limit of opening is followed cartilage design sleeve axis direction, be carved with the scale mark on the long limit of opening.
9. The multifunctional osteochondral graft device of claim 8, wherein: the scale mark begins to hold the sleeve from 0 scale mark in proper order by the telescopic blade of cartilage design, and the distance of the telescopic blade of cartilage design to opening base is 0.5 cm.
10. The multifunctional osteochondral graft device of claim 1, wherein: the inner wall of the cartilage shaping sleeve is provided with three convex strips which are distributed at equal intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021623567.1U CN213489567U (en) | 2020-08-07 | 2020-08-07 | Multifunctional osteochondral transplantation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021623567.1U CN213489567U (en) | 2020-08-07 | 2020-08-07 | Multifunctional osteochondral transplantation device |
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| Publication Number | Publication Date |
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| CN213489567U true CN213489567U (en) | 2021-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021623567.1U Expired - Fee Related CN213489567U (en) | 2020-08-07 | 2020-08-07 | Multifunctional osteochondral transplantation device |
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| CN (1) | CN213489567U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115192273A (en) * | 2022-09-19 | 2022-10-18 | 北京大学第三医院（北京大学第三临床医学院） | Personalized metal 3D printing osteochondral transplantation instrument and method |
-
2020
- 2020-08-07 CN CN202021623567.1U patent/CN213489567U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115192273A (en) * | 2022-09-19 | 2022-10-18 | 北京大学第三医院（北京大学第三临床医学院） | Personalized metal 3D printing osteochondral transplantation instrument and method |
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Granted publication date: 20210622 |