Cartilage transplanter for orthopedic surgery

Abstract

The utility model discloses a cartilage transplanter for orthopedic surgery, and relates to the technical field of medical instruments. Comprising an outer sheath, a handle is fixedly connected to the upper portion of the outer sheath, a sliding groove is formed in the handle, a bone grafting assembly is arranged in the outer sheath and comprises a push rod and a push cylinder, the push cylinder is connected with a clamping assembly, the clamping assembly comprises a connecting rod and a clamping plate, and the position of the connecting rod can be adjusted by pushing a holding plate; the clamping plates clamp the side face of the cartilage tissue, the pushing cylinder applies downward pushing force to the top end of the cartilage tissue, the clamping plates connected with the connecting rods apply downward pushing force to the outer surface of the cartilage tissue, and the cartilage tissue is conveniently pushed to be stably implanted into the defect area of the joint surface; and the top of the cartilage tissue is prevented from being damaged due to excessive stress. The cartilage transplanter solves the problems that when an existing cartilage transplanter applies thrust to the top of cartilage tissue, the top of the cartilage tissue is damaged due to overlarge stress, and the healing and stability of cartilage are affected.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a cartilage transplanter used in orthopedic surgery. Background Art

[0002] Cartilage transplantation is a common orthopedic surgical procedure that is usually performed when cartilage is missing or damaged due to injury, trauma, arthritis or other causes. The principle of cartilage transplantation is to transplant healthy cartilage tissue to the damaged joint surface. The transplanted cartilage tissue can come from the patient's own healthy cartilage (autologous transplant) or a donor (allogeneic transplant) to help the patient restore function and mobility of the damaged joint.

[0003] However, the existing cartilage transplanter needs to use a push rod to push the removed cartilage tissue to implant it into the location of the cartilage defect. Usually, the push rod applies a thrust to the top of the cartilage tissue to push the cartilage tissue for implantation. Therefore, the top of the cartilage tissue may be subjected to excessive force and be damaged, affecting the blood supply and growth of the cartilage, thereby affecting the healing and stability of the cartilage. Utility Model Content

[0004] The main purpose of the utility model is to provide a cartilage transplanter for orthopedic surgery to solve the problems existing in the prior art.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A cartilage transplanter for orthopedic surgery comprises an outer sheath, a handle is fixedly connected to the upper part of the outer sheath, a slide groove is provided inside the handle, a bone grafting component is arranged inside the outer sheath, the bone grafting component comprises a push rod and a push cylinder, the push cylinder is connected to a clamping component, the clamping component comprises a connecting rod and a clamping plate, and the clamping component is used to clamp the cartilage;

[0007] The connecting rod is connected with a locking assembly, which includes a spring and a clamping block. One end of the spring is fixedly connected to the push cylinder, and the other end of the spring is fixedly connected to the connecting rod. A clamping slot is provided inside the handle. The locking assembly is used to lock the bone grafting assembly.

[0008] Through the above technical solution, the position of the connecting rod is adjusted so that the splint can clamp the side of the cartilage tissue, thereby applying a thrust to the top and side of the cartilage tissue to prevent the top of the cartilage tissue from being damaged by excessive thrust. In the process of the splint clamping the cartilage tissue, the locking assembly can be released to lock the bone grafting assembly, and then the push rod and the connecting rod can be pushed to implant the cartilage tissue.

[0009] Furthermore, the difference between the radius of the slide groove and the push rod is greater than the sum of the lengths of the connecting rod and the clamping block, and the connection modes of the push rod and the connecting rod to the slide groove are all sliding connections.

[0010] The above technical solution can easily leave enough space for the push rod and the connecting rod to slide.

[0011] Furthermore, the upper end of the push rod is connected to a sleeve, and the upper end of the sleeve is connected to a protective cap.

[0012] Through the above technical solution, the protective cap can protect the top of the push rod, the sleeve and the connecting rod to prevent the top of the push rod, the sleeve and the connecting rod from being damaged.

[0013] Furthermore, a gripping plate is fixedly connected to one side of the connecting rod, the gripping plate is an arc-shaped sheet structure, and the connection mode between the connecting rod and the sleeve is a sliding connection.

[0014] Through the above technical solution, the connecting rod can be easily controlled by using the grip plate, so as to adjust the position of the connecting rod, and the sliding connection between the connecting rod and the sleeve facilitates the linear movement of the connecting rod.

[0015] Furthermore, the connecting rod forms a telescopic structure inside the push cylinder through a spring, and the connection between the connecting rod and the push cylinder is a sliding connection.

[0016] Through the above technical solution, the spring can drive the connecting rod to reset, thereby adjusting the position of the connecting rod.

[0017] Furthermore, the protective cap is connected to the connecting rod in a sliding manner, and the diameter of the protective cap is larger than the horizontal distance from the side of the grip plate to the center of the push rod.

[0018] Through the above technical solution, the protective cap can limit the sliding of the connecting rod, thereby ensuring that the connecting rod moves linearly in the horizontal direction.

[0019] Furthermore, the connection between the card block and the connecting rod is a fixed connection, and four card blocks are provided, and the card blocks correspond to the card slots one by one.

[0020] Through the above technical solution, the connecting rod can be limited by the snap connection between the card block and the card slot, thereby limiting the push rod connected to the connecting rod through the protective cap and the sleeve, locking the push rod so that the push rod cannot apply a single-direction force to the top of the cartilage tissue.

[0021] Furthermore, four clamping plates are provided, the clamping plates are distributed at equal angles with respect to the center of the push cylinder, and the clamping plates are arc-shaped block structures.

[0022] Through the above technical solution, the splint provided with the arc-shaped block structure can be stably fitted with the outer surface of the cartilage tissue, thereby facilitating the subsequent application of thrust to the outer surface of the cartilage tissue.

[0023] Compared with the prior art, the utility model has the following beneficial effects:

[0024] The pushing grip plate can adjust the position of the connecting rod, so that the splint clamps the side of the cartilage tissue, and the push tube applies a downward thrust to the top of the cartilage tissue, and the splint connected to the connecting rod applies a downward thrust to the outer surface of the cartilage tissue, which is convenient for pushing the cartilage tissue to be stably implanted into the defect area on the joint surface, and avoids the top of the cartilage tissue from being damaged by excessive force, and the connecting rod can be limited by the snap connection between the card block and the card slot, thereby limiting the push rod and locking it, so that the push rod cannot apply a single-direction force to the top of the cartilage tissue, and the push rod can be unlocked during the process of the splint clamping the cartilage tissue. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 For the utility model Figure 1 The enlarged structural diagram at A in the middle;

[0027] Figure 3 This is a schematic diagram of the connection structure between the push rod and the sleeve in the utility model;

[0028] Figure 4 This is a schematic cross-sectional view of the handle in the utility model;

[0029] Figure 5 For the utility model Figure 4 The enlarged structural diagram at B in the middle;

[0030] Figure 6 This is a schematic diagram of the connection structure between the connecting rod and the clamping block in the utility model;

[0031] Figure 7 It is a schematic diagram of the cross-sectional structure of the outer sheath in the utility model;

[0032] Figure 8 It is a schematic cross-sectional structural diagram of the push tube in the utility model.

[0033] Among them: 1. outer sheath; 2. handle; 3. slide groove; 4. push rod; 5. sleeve; 6. connecting rod; 7. grip plate; 8. protective cap; 9. slot; 10. block; 11. push cylinder; 12. spring; 13. splint. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] See also Figure 1-Figure 8 The utility model provides a technical solution: a cartilage transplanter for orthopedic surgery, comprising an outer sheath 1, a handle 2 is fixedly connected to the upper part of the outer sheath 1, a slide groove 3 is provided inside the handle 2, a bone grafting component is arranged inside the outer sheath 1, the bone grafting component comprises a push rod 4 and a push cylinder 11, the push cylinder 11 is connected with a clamping component, the clamping component comprises a connecting rod 6 and a splint 13, the clamping component is used to clamp the cartilage, four splints 13 are arranged, the splints 13 are distributed at equal angles with respect to the center of the push cylinder 11, and the splints 13 are arc-shaped block structures;

[0036] The principle of stably implanting cartilage tissue is as follows: in orthopedic surgery, if autologous cartilage transplantation is used, the doctor will first obtain healthy cartilage tissue from other parts of the patient's body under arthroscopy. After the cartilage tissue is cleaned and prepared, the doctor will use special instruments to cut the cartilage tissue into transplant pieces of appropriate size and shape, and then place the cut cartilage tissue into the cartilage transplanter. The doctor then holds the grip plate 7 and pushes the connecting rod 6 toward the inside of the sleeve 5, so that the block 10 connected to the connecting rod 6 is separated from the card slot 9. At this time, the connecting rod 6 The splint 13 connected at the lower end will fit with the outer surface of the cartilage tissue and clamp the cartilage tissue, and then push the gripping plate 7 downward. The connecting rod 6 connected to the gripping plate 7 drives the push rod 4 to move through the protective cap 8 and the sleeve 5. The push rod 4 drives the push tube 11 to move downward, so that the push tube 11 applies a downward thrust to the top of the cartilage tissue, and the splint 13 connected to the connecting rod 6 applies a downward thrust to the outer surface of the cartilage tissue, which is convenient for pushing the cartilage tissue so that it can be stably implanted into the defective area of ​​the joint surface, thereby avoiding excessive force on the top of the cartilage tissue and causing damage.

[0037] See also Figure 1-Figure 6 The connecting rod 6 is connected with a locking assembly, which includes a spring 12 and a block 10. One end of the spring 12 is fixedly connected to the push cylinder 11, and the other end of the spring 12 is fixedly connected to the connecting rod 6. The connecting rod 6 forms a telescopic structure inside the push cylinder 11 through the spring 12. The connection between the connecting rod 6 and the push cylinder 11 is a sliding connection. A slot 9 is provided inside the handle 2. The locking assembly is used to lock the bone grafting assembly. The block 10 is fixedly connected to the connecting rod 6. Four blocks 10 are provided, and the blocks 10 correspond to the slots 9 one by one.

[0038] It is worth mentioning that the connecting rod 6 can be limited by the engagement connection between the block 10 and the slot 9, thereby limiting the push rod 4 connected to the connecting rod 6 through the protective cap 8 and the sleeve 5, locking the push rod 4, so that the push rod 4 cannot apply a single-direction force to the top of the cartilage tissue.

[0039] See also Figure 1-Figure 5 The difference between the radius of the slide groove 3 and the push rod 4 is greater than the sum of the lengths of the connecting rod 6 and the block 10, and the connection modes of the push rod 4 and the connecting rod 6 with the slide groove 3 are all sliding connections.

[0040] It is worth mentioning that the diameter of the slide groove 3 is much larger than the diameter of the push rod 4 so as to leave enough space for the push rod 4 and the connecting rod 6 to slide.

[0041] See also Figure 1-Figure 4 The upper end of the push rod 4 is connected to a sleeve 5, and the upper end of the sleeve 5 is connected to a protective cap 8. The protective cap 8 is connected to the connecting rod 6 in a sliding manner. The diameter of the protective cap 8 is larger than the horizontal distance from the side of the grip plate 7 to the center of the push rod 4.

[0042] The function of the protective cap 8 is as follows: the protective cap 8 can protect the top of the push rod 4, the sleeve 5 and the connecting rod 6 to prevent the top of the push rod 4, the sleeve 5 and the connecting rod 6 from being damaged, and the protective cap 8 can limit the sliding of the connecting rod 6, thereby ensuring that the connecting rod 6 moves linearly in the horizontal direction.

[0043] See also Figure 1-Figure 2 A grip plate 7 is fixedly connected to one side of the connecting rod 6. The grip plate 7 is an arc-shaped sheet structure. The connection between the connecting rod 6 and the sleeve 5 is a sliding connection.

[0044] It should be noted that the grip plate 7 can be used to control the connecting rod 6, thereby adjusting the position of the connecting rod 6, and the sliding connection between the connecting rod 6 and the sleeve 5 facilitates the connecting rod 6 to move linearly.

[0045] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A cartilage transplanter for orthopedic surgery, comprising an outer sheath, characterized in that: A handle is fixedly connected to the upper part of the outer sheath, a slide groove is provided inside the handle, a bone grafting assembly is arranged inside the outer sheath, the bone grafting assembly includes a push rod and a push cylinder, the push cylinder is connected to a clamping assembly, the clamping assembly includes a connecting rod and a clamping plate, and the clamping assembly is used to clamp the cartilage; The connecting rod is connected to a locking assembly, which includes a spring and a clamping block. One end of the spring is fixedly connected to the push cylinder, and the other end of the spring is fixedly connected to the connecting rod. A clamping groove is provided inside the handle, and the locking assembly is used to lock the bone grafting assembly.

2. A cartilage transplanter for orthopedic surgery according to claim 1, characterized in that: The difference between the radius of the slide groove and the push rod is greater than the sum of the lengths of the connecting rod and the clamping block, and the connection modes of the push rod and the connecting rod to the slide groove are all sliding connections.

3. The cartilage transplanter for orthopedic surgery according to claim 1, characterized in that: The upper end of the push rod is connected with a sleeve, and the upper end of the sleeve is connected with a protective cap.

4. The cartilage transplanter for orthopedic surgery according to claim 1, characterized in that: A gripping plate is fixedly connected to one side of the connecting rod, and the gripping plate is an arc-shaped sheet structure. The connecting rod and the sleeve are connected in a sliding manner.

5. The cartilage transplanter for orthopedic surgery according to claim 1, characterized in that: The connecting rod forms a telescopic structure inside the push cylinder through a spring, and the connection mode between the connecting rod and the push cylinder is a sliding connection.

6. The cartilage transplanter for orthopedic surgery according to claim 3, characterized in that: The protective cap is connected to the connecting rod in a sliding manner, and the diameter of the protective cap is greater than the horizontal distance from the side of the grip plate to the center of the push rod.

7. The cartilage transplanter for orthopedic surgery according to claim 1, characterized in that: The connection mode between the clamping block and the connecting rod is a fixed connection. Four clamping blocks are provided, and the clamping blocks correspond to the clamping slots one by one.

8. The cartilage transplanter for orthopedic surgery according to claim 1, characterized in that: There are four clamping plates, which are distributed at equal angles with respect to the center of the push cylinder, and are arc-shaped block structures.

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