CN219439305U - Knee joint cartilage transplanting instrument - Google Patents

Abstract

The utility model discloses a knee joint cartilage transplanting device, which comprises a positioning mechanism, a fast-assembling interface connected with the positioning mechanism, an electric drill for orthopaedics, and a cartilage pushing mechanism, wherein the electric drill is matched and connected with the fast-assembling interface; when the knee joint bone harvesting device works, the surface of the unweighted knee joint is positioned through the positioning mechanism, then the bone harvesting device is connected with the electric drill for orthopaedics through the fast-assembling interface, and the separated electric drill is used for pushing out the cartilage through the fast-assembling interface after the cartilage is taken out, so that the cartilage is pushed out and implanted into the hole of the damaged part of the knee joint through the cartilage pushing mechanism. The utility model has the advantages that the utility model is matched with the orthopaedics universal electric drill to use when in work, no impact is caused to human body when in work, secondary soft tissue injury is not easy to cause, the positioning mechanism is matched with the positioning mechanism to take out cartilage without impact, the cartilage is more accurately positioned, the cartilage is not easy to deviate from a preset area, the taken out cartilage is neat in edge, cartilage fracture is not easy to cause, and the arranged holding handle is more in accordance with the design of human engineering, and the operation experience is more excellent.

Description

Knee joint cartilage transplanting instrument

Technical Field

The utility model relates to the technical field of medical auxiliary instruments, in particular to a knee joint cartilage transplanting instrument.

Background

Treatment of knee cartilage damage has been a problem in the orthopedic field because articular cartilage has no blood vessels, nerves and lymphoid tissues and has limited repair capacity; the normal knee joint surface is covered by hyaline cartilage, once the hyaline cartilage is damaged, joint pain, instability and stiffness can be caused, joint degeneration is accelerated, osteoarthritis is caused, and the problem of headache of clinicians is always the most; the current methods for treating knee joint cartilage injury by surgery mainly comprise a bone marrow induction method, a transplantation substitution method and a biological repair technology; the bone cartilage transplantation is a representative of a transplantation substitution method, and the basic principle of the bone cartilage transplantation operation in the market at present is that a cartilage abrasion position is positioned by a positioning tool, a reamer is utilized to open holes in a knee joint cartilage abrasion area, intact and unworn knee joint cartilage is taken out by a hammer beating transplanter in a knee joint non-load area, and the taken-out intact cartilage is transplanted into holes of the abrasion part as a donor, so that injured cartilage is repaired;

current surgical instrument defects: (1) The bone cartilage taken out by the hammer beating transplanting device is irregular in edge, so that cartilage is easy to crack; (2) The cartilage is not easy to locate when the transplanting device is knocked by a hammer to take out cartilage, and is easy to deviate from a preset area; (3) The impact is large when the transplanting device is knocked by a hammer to take cartilage, so that secondary soft tissue injury is easily caused to a patient; (4) The T-shaped handle of the transplanting device does not accord with the ergonomic design, and the operation experience is poor;

in view of the above, there is a need for an improvement over existing grafting instruments that can accommodate the current needs of knee cartilage implant use.

Disclosure of Invention

The utility model aims to solve the problems and designs a knee joint cartilage transplanting device.

The technical scheme of the utility model for achieving the purpose is that the knee joint cartilage transplanting device comprises a positioning mechanism, a fast-assembling interface connected with the positioning mechanism, an electric drill for orthopaedics, and a cartilage pushing mechanism, wherein the electric drill is matched and connected with the fast-assembling interface; when the knee joint bone harvesting device works, the surface of the unweighted knee joint is positioned through the positioning mechanism, then the bone harvesting device is connected with the electric drill for orthopaedics through the fast-assembling interface, and the separated electric drill is used for pushing out the cartilage through the fast-assembling interface after the cartilage is taken out, so that the cartilage is pushed out and implanted into the hole of the damaged part of the knee joint through the cartilage pushing mechanism.

Further supplementing the technical proposal, the end part of the fast-assembling interface close to the bone taking side is zigzag.

To the further supplement of this technical scheme, positioning mechanism includes location portion, the fixed part of being connected with location portion, location portion is the cylinder, fixed part sets up in location portion keeps away from and gets bone one side tip and its slope setting down.

In addition to the technical scheme, the positioning part is zigzag near the bone taking side.

To the further supplement of this technical scheme, cartilage pushing mechanism includes the push rod, with the screw rod of push rod connection, set up in the connecting pipe in screw rod and the push rod outside, set up in the handle of holding of connecting pipe below, push rod slidable mounting is in connecting pipe, fast-assembling interface, screw rod slidable mounting is in the connecting pipe, connecting pipe internal surface and fast-assembling interface external surface connection, the handle of holding is the downward sloping setting, screw rod and connecting pipe internal surface threaded connection.

Further supplementing the technical proposal, the section of the push rod is in a T shape which rotates 90 degrees anticlockwise.

According to the technical scheme, a nut is arranged on one side, far away from the push rod, of the screw rod.

Further supplementing the technical proposal, the outer sides of the connecting pipe and the fast-assembling interface are also provided with a protection mechanism.

To the further supplement of this technical scheme, protection machanism is including the cover locate the sleeve pipe in the connecting pipe outside, the cover locate the connecting pipe outside and be located the inboard spring of sleeve pipe, set up in the catch of spring one side, the surface of connecting pipe is equipped with the arch, the spring sets up in protruding one side, the catch sets up in bellied opposite side and catch and sleeve pipe internal surface threaded connection.

Further supplementing the technical proposal, the section of the locking ring is in a convex shape which rotates 90 degrees anticlockwise.

The bone cartilage locating device has the beneficial effects that the bone cartilage locating device is used in cooperation with an orthopaedics universal electric drill in work, no impact is generated to a human body in work, secondary soft tissue injury is not easy to cause, cartilage locating is more accurate in cooperation with a locating mechanism due to no impact, the bone cartilage locating device is not easy to deviate from a preset area, the edge of the bone cartilage is tidy, cartilage fragmentation is not easy to cause, the arranged holding handle is more in accordance with ergonomic design, and the operation experience is more excellent.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic side elevational view of the present utility model;

FIG. 3 is a schematic cross-sectional view of A-A of FIG. 2;

in the figure, 1, a positioning mechanism; 11. a positioning part; 12. a fixing part; 2. a fast-assembling interface; 3. a cartilage pushing mechanism; 31. a push rod; 32. a screw; 33. a connecting pipe; 331. a protrusion; 34. holding a handle; 35. a screw cap; 4. a protection mechanism; 41. a sleeve; 42. a spring; 43. a locking ring.

Detailed Description

Because the existing transplanting apparatus has many defects, the use is relatively inconvenient, and the use effect is relatively poor, therefore, the cartilage transplanting apparatus is designed on the basis of the defects of the prior art, and has better safety, good use effect and convenient operation.

In order to make the technical solution more clear for the person skilled in the art, the following technical solution of the present utility model will be described in detail with reference to fig. 1 to 3:

the knee joint cartilage transplanting device comprises a positioning mechanism 1, a quick-assembly interface 2 connected with the positioning mechanism 1, an electric drill (not shown) for orthopaedics, which is matched and connected with the quick-assembly interface 2, and a cartilage pushing mechanism 3, which is matched and connected with the quick-assembly interface 2; during operation, the positioning mechanism 1 is used for positioning the surface of the unworn knee joint in the unweighted area, wherein the positioning mechanism 1 can well position cartilage, so that the subsequent electric drill for orthopaedics can work better, the quick-mounting interface 2 is specially designed and can well cooperate with the electric drill for orthopaedics and the cartilage pushing mechanism 3, and therefore bone taking and cartilage pushing can be conveniently and well carried out and implanted into holes of the damaged knee joint; in detail, when in work, the universal electric drill for orthopaedics is connected with the quick-mounting interface 2 with saw teeth, and the electric drill drives the quick-mounting interface 2 to rotate at high speed to cut and take bones under the positioning of the positioning mechanism 1; separating the electric drill after the cartilage is taken out, and connecting the quick-mounting interface 2 with saw teeth through the cartilage pushing mechanism 3; after the cartilage pushing mechanism 3 is connected with the quick-assembly interface 2, the intact cartilage in the trepan can be pushed out and implanted into the hole of the damaged part of the knee joint, so that the whole repair operation is completed.

For better positioning, the end of the quick connector 2 close to the bone taking side is zigzag.

The structure of the positioning mechanism 1 will be described in detail below, the positioning mechanism 1 comprises a positioning part 11 and a fixing part 12 connected with the positioning part 11, the positioning part 11 is in a cylinder shape, the fixing part 12 is arranged at one side end part of the positioning part 11 far away from bone taking, and is arranged in a downward inclined manner, the fixing part 12 is manually held during operation, then the positioning part 11 is aligned to the surface of a non-load area of an unworn knee joint for positioning, the use effect is good, and the bone taking by an electric drill for orthopaedics is facilitated; more preferably, the positioning part 11 is zigzag on the side close to the bone taking part, and the positioning effect is better.

The structure of the cartilage pushing mechanism 3 will be described in detail below, the cartilage pushing mechanism 3 includes a push rod 31, a screw rod 32 connected with the push rod 31, a connecting pipe 33 disposed outside the screw rod 32 and the push rod 31, and a holding handle 34 disposed below the connecting pipe 33, the push rod 31 is slidably mounted in the connecting pipe 33 and the quick-mounting interface 2, the screw rod 32 is slidably mounted in the connecting pipe 33, the inner surface of the connecting pipe 33 is connected with the outer surface of the quick-mounting interface 2, the holding handle 34 is disposed obliquely downward, the screw rod 32 is in threaded connection with the inner surface of the connecting pipe 33, the movement and locking are convenient, the holding handle 34 is tightly held by one hand during operation, the screw rod 32 can be moved towards the front end of the connecting pipe 33 by rotating the screw rod 32 by the other hand, the push rod 31 can be driven to move forward by touching the push rod 31 during operation, and the screw rod 32 can be moved by rotating the screw rod 31 during operation, so that the intact cartilage in the quick-mounting interface 2 can be pushed out and implanted into a hole of a damaged knee joint part to complete the whole repair operation, and the cartilage section is better pushed out, the cartilage is rotated counterclockwise by 90 degrees, the screw rod 31 is not easy to be contacted with the screw rod 32 on one side because of the screw rod 32 is not easy to be contacted with the screw rod 32, and the outer surface is not easy to be opened by the manual finger 35 because of the screw rod is directly operated.

In order to better protect the cartilage pushing mechanism 3, the outer sides of the connecting pipe 33 and the quick-assembly interface 2 are also provided with a protection mechanism 4, the protection mechanism 4 comprises a sleeve 41 sleeved outside the connecting pipe 33, a spring 42 sleeved outside the connecting pipe 33 and positioned inside the sleeve 41, and a locking ring 43 arranged on one side of the spring 42, a protrusion 331 is arranged on the outer surface of the connecting pipe 33, the spring 42 is arranged on one side of the protrusion 331, the locking ring 43 is arranged on the other side of the protrusion 331, and the locking ring 43 is in threaded connection with the inner surface of the sleeve 41; the cross section of the locking ring 43 is in a convex shape rotated 90 degrees anticlockwise; during operation, the spring 42 is installed firstly, then the sleeve 41 is installed, then the sleeve is screwed and fixed through the lock ring 43, the operation is convenient, the use effect is good, and the protection effect on the connecting pipe 33 is good.

The above technical solution only represents the preferred technical solution of the present utility model, and some changes that may be made by those skilled in the art to some parts of the technical solution represent the principles of the present utility model, and the technical solution falls within the scope of the present utility model.

Claims (10)

1. The knee joint cartilage transplanting device is characterized by comprising a positioning mechanism (1), a quick-mounting interface (2) connected with the positioning mechanism (1), an electric drill for orthopaedics, which is matched and connected with the quick-mounting interface (2), and a cartilage pushing mechanism (3) which is matched and connected with the quick-mounting interface (2); when the knee joint bone harvesting device works, the surface of the unworn knee joint non-load area is positioned through the positioning mechanism (1), then the bone harvesting device is connected with an orthopedic electric drill through the fast-assembling interface (2), and the cartilage pushing mechanism (3) is installed on the separated electric drill after cartilage is removed through the fast-assembling interface (2) to push out cartilage and implant the cartilage into a hole of a damaged knee joint part.

2. A knee joint cartilage graft instrument according to claim 1, wherein the end of the quick connector (2) adjacent to the bone-taking side is zigzag.

3. The knee joint cartilage transplanting device according to claim 1, wherein the positioning mechanism (1) comprises a positioning part (11) and a fixing part (12) connected with the positioning part (11), the positioning part (11) is in a cylinder shape, and the fixing part (12) is arranged at the end part of the positioning part (11) far away from the bone taking side and is inclined downwards.

4. A knee joint cartilage graft instrument according to claim 3, wherein the positioning portion (11) has a zigzag shape on a side near the bone extraction.

5. The knee joint cartilage transplanting device according to claim 1, wherein the cartilage pushing mechanism (3) comprises a push rod (31), a screw rod (32) connected with the push rod (31), a connecting pipe (33) arranged on the outer side of the screw rod (32) and the push rod (31), and a holding handle (34) arranged below the connecting pipe (33), the push rod (31) is slidably mounted in the connecting pipe (33) and the quick-mounting interface (2), the screw rod (32) is slidably mounted in the connecting pipe (33), the inner surface of the connecting pipe (33) is connected with the outer surface of the quick-mounting interface (2), the holding handle (34) is arranged in a downward inclined mode, and the screw rod (32) is in threaded connection with the inner surface of the connecting pipe (33).

6. A knee cartilage graft in accordance with claim 5, wherein the pushrod (31) has a T-shaped cross section rotated 90 ° counter-clockwise.

7. A knee joint cartilage grafting instrument according to claim 5, wherein the screw (32) is provided with a nut (35) on the side remote from the push rod (31).

8. A knee joint cartilage grafting instrument according to any of claims 5-7, wherein the connecting tube (33) and the outside of the quick-fit interface (2) are further provided with a protection mechanism (4).

9. The knee cartilage grafting instrument according to claim 8, wherein the protection mechanism (4) comprises a sleeve (41) sleeved outside the connecting pipe (33), a spring (42) sleeved outside the connecting pipe (33) and positioned inside the sleeve (41), and a locking ring (43) arranged on one side of the spring (42), a protrusion (331) is arranged on the outer surface of the connecting pipe (33), the spring (42) is arranged on one side of the protrusion (331), and the locking ring (43) is arranged on the other side of the protrusion (331) and is in threaded connection with the inner surface of the sleeve (41).

10. A knee cartilage grafting instrument as claimed in claim 9, wherein the cross section of the locking ring (43) is in the form of a convex shape rotated 90 ° counter-clockwise.