Pusher for cartilage injury repair under arthroscope

Abstract

The utility model relates to a pusher for cartilage injury repair under an arthroscope, which belongs to the technical field of medical instruments and comprises a push rod and an outer sleeve, the push rod is movably arranged in the outer sleeve and is in interference fit with the outer sleeve, and the tail end of the outer sleeve is connected with a handle convenient to hold; an inclined groove is formed in the head end of the outer sleeve, the outer sleeve comprises a semi-groove pipe, and the semi-groove pipe is used for guiding other auxiliary instruments to conduct an operation; according to the pusher for the cartilage injury repair operation under the arthroscope, repair materials are pushed to a designated injury position through cooperation of the push rod and the outer sleeve, the head end of the outer sleeve is designed to be of an inclined groove structure so that laying and operation of the cartilage materials in the operation can be facilitated, and the semi-groove pipe is arranged to guide other auxiliary instruments to conduct the operation; according to the utility model, the surgical operation is more convenient and quicker, the repair material can be effectively prevented from being damaged, and the surgical efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of pusher for arthroscopic cartilage injury repair, belong to medical instrument technical field. BACKGROUND

[0002] Joint cartilage is a kind of avascular, nerve and lymphatic tissue, and it is difficult to repair itself after injury. Knee joint cartilage injury is a frequently-occurring and refractory joint injury in athletes and ordinary people. An epidemiological survey shows that in arthroscopic surgery, cartilage injury accounts for as high as 63%, and serious cartilage injury affects joint function and even causes athletes to lose sports life. In the past few decades, people have been committed to researching cartilage injury repair and reconstruction methods. Joint cartilage injury repair is a new type of surgery based on biomembrane technology, which has the function of inducing in-situ regeneration of high-purity hyaline cartilage phenotype joint cartilage, and has less sequelae than traditional cartilage resection surgery.

[0003] In joint cartilage injury repair, the repair material needs to be pushed to the cartilage injury site through the instrument channel in advance, and then other auxiliary instruments are used to clamp and flatten the repair material to the joint cartilage injury site to fill the vacancy and complete the surgical operation. Since the repair material used in the repair surgery is very soft but has very low toughness, it is easy to cause material damage when pushed to the injury site. In the existing surgical process, no special pusher is used, and a meniscus guide plate 4 is usually used instead, as shown in Figure 5 The pushing process is not easy to operate, and the repair material is easy to be damaged, resulting in low surgical efficiency. UTILITY MODEL CONTENT

[0004] In view of the above deficiencies in the prior art, the utility model solves the technical problem of providing a pusher for arthroscopic cartilage injury repair, which conveniently pushes the joint cartilage repair material to the specified injury site, avoids damage to the repair material, and improves the surgical efficiency.

[0005] The pusher for arthroscopic cartilage injury repair, comprising a push rod and an outer sleeve, the push rod is movably arranged in the outer sleeve and is in interference fit with the outer sleeve, and a handle convenient for holding is connected to the tail end of the outer sleeve; the first end of the outer sleeve is provided with an inclined groove, and the outer sleeve comprises a half-slot pipe, which is used to guide other auxiliary instruments for surgery.

[0006] The technical solution of the utility model provides a pusher for arthroscopic cartilage injury repair, which lays repair material at the first end of the push rod, pushes the repair material to the specified injury site by cooperation of the push rod and the outer sleeve, designs the first end of the outer sleeve as an inclined groove structure to facilitate the laying and operation of cartilage material during surgery, and guides other auxiliary instruments for surgery by setting a half-slot pipe, so that the surgical operation is more convenient and fast.

[0007] Preferably, the outer sleeve further includes a push rod sleeve and a sleeve connecting block, wherein the push rod sleeve is connected to the half-groove tube through the sleeve connecting block.

[0008] Preferably, the push rod includes a push rod head and a push rod seat, with the push rod head and push rod sleeve having a clearance fit; the diameter of the push rod seat is larger than the outer diameter of the push rod sleeve, serving as a limiting function.

[0009] Furthermore, the push rod head has a rounded corner design to prevent the cartilage repair material from being damaged and wrinkled due to friction during the pushing process; the push rod head has a groove, and a sealing ring is fitted in the groove, so that the push rod head and the push rod sleeve form an interference fit through the sealing ring.

[0010] Preferably, the handle is provided with an ergonomically designed grip; the angle between the handle and the outer sleeve is an obtuse angle to prevent obstruction of the doctor's view during surgery.

[0011] The advantages of this utility model compared with the prior art are:

[0012] The pusher described in this invention for arthroscopic cartilage repair surgery uses a push rod and an outer tube to push the repair material to the designated injury site. The first end of the outer tube is designed with a slanted groove structure to facilitate the placement and manipulation of cartilage material during the operation. A semi-groove tube is also used to guide other auxiliary instruments during the operation. This invention makes the surgical operation more convenient and faster, effectively avoids damage to the repair material, and improves surgical efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 It is a 3D diagram of the push rod;

[0015] Figure 3 It is a 3D diagram of the outer tube;

[0016] Figure 4 It is a 3D diagram of the handle;

[0017] Figure 5 This is a structural diagram of the meniscus baffle.

[0018] In the diagram: 1. Push rod; 11. Push rod seat; 12. Sealing ring; 13. Push rod head; 2. Outer sleeve; 21. Push rod sleeve; 211. Inclined groove; 22. Sleeve connecting block; 23. Half-groove tube; 3. Handle; 31. Grip handle flower; 4. Meniscus baffle. Detailed Implementation

[0019] like Figures 1-4As shown, this embodiment is achieved through the following technical solution: it includes a push rod 1 and an outer tube 2. The push rod 1 is movably disposed in the outer tube 2 and is interference-fitted with the outer tube 2. The tail end of the outer tube 2 is connected to a handle 3 for easy gripping. The head end of the outer tube 2 is provided with a slanted groove 211. The design of the slanted groove 211 is conducive to the placement of repair materials during surgery, and can avoid the step-like feeling when placing cartilage materials, and also leave space for the operation of other instruments. The head end of the slanted groove 211 is rounded and blunted, which can effectively prevent instruments from scratching other tissues when they are inserted into the patient's body. The outer tube 2 includes a semi-groove tube 23, which is used to guide other auxiliary instruments during surgery.

[0020] In this embodiment, the outer sleeve 2 further includes a push rod sleeve 21 and a sleeve connecting block 22. The push rod sleeve 21 is connected to the semi-groove tube 23 through the sleeve connecting block 22. The push rod 1 includes a push rod head 13 and a push rod seat 11. The push rod head 13 and the push rod sleeve 21 are clearance-fitted. The diameter of the push rod seat 11 is larger than the outer diameter of the push rod sleeve 21, serving as a limiting function. The push rod head 13 has a rounded end to prevent damage and wrinkling of the cartilage repair material during the pushing process. A groove is provided on the push rod head 13, and a sealing ring 12 is fitted in the groove. The push rod head 13 forms an interference fit with the push rod sleeve 21 through the sealing ring 12. Under the action of friction, the push rod 1 will not slide freely, making it less likely to cause accidental contact and preventing damage and wrinkling of the cartilage repair material, which would affect the surgical operation. The handle 3 has an ergonomically designed grip 31. The angle between the handle 3 and the outer sleeve 2 is an obtuse angle to prevent obstruction of the doctor's vision during the operation.

[0021] The method of using this utility model is as follows:

[0022] 1. When performing arthroscopic articular cartilage repair surgery, cartilage repair material is laid flat on the front end of the push rod 13 beforehand, and then the push rod 1 is inserted into the outer tube 2 from the tail end;

[0023] 2. The inclined groove 211 of the pusher containing the repair material is placed at the cartilage injury site through the arthroscopic approach, and the pusher seat 11 is pushed to slowly push the cartilage repair material into the cartilage gap;

[0024] 3. Because the articular cartilage repair material is relatively soft, it is inevitable that the material will deform during the process of the pusher head 13 pushing the articular cartilage repair material to the cartilage notch. After the articular cartilage repair material is pushed to the cartilage notch, other auxiliary instruments such as probes can be guided to the cartilage notch through the semi-groove tube 23, and the deformed cartilage repair material can be flattened by using probes and other auxiliary instruments.

[0025] Of course, the above description is only a preferred embodiment of this utility model and should not be considered as limiting the scope of the embodiments of this utility model. This utility model is not limited to the above examples, and all equivalent changes and improvements made by those skilled in the art within the scope of this utility model should be included in the patent coverage of this utility model.

Claims

1. A pusher for arthroscopic cartilage lesion repair surgery, characterized in that, It includes a push rod (1) and an outer tube (2). The push rod (1) is movably installed in the outer tube (2). The push rod (1) and the outer tube (2) are interference-fitted. The tail end of the outer tube (2) is connected to a handle (3) for easy gripping. The head end of the outer tube (2) is provided with a slanted groove (211). The outer tube (2) includes a semi-groove tube (23) for guiding other auxiliary instruments.

2. The pusher for arthroscopic cartilage repair surgery according to claim 1, characterized in that, The outer sleeve (2) further includes a push rod sleeve (21) and a sleeve connecting block (22), and the push rod sleeve (21) is connected to the half-groove tube (23) through the sleeve connecting block (22).

3. The pusher for arthroscopic cartilage repair surgery according to claim 2, characterized in that, The push rod (1) includes a push rod head (13) and a push rod seat (11). The push rod head (13) and the push rod sleeve (21) are clearance fit. The diameter of the push rod seat (11) is larger than the outer diameter of the push rod sleeve (21).

4. The pusher for arthroscopic cartilage repair surgery according to claim 3, characterized in that, The push rod head (13) has a rounded corner design at the front end. A groove is provided on the push rod head (13), and a sealing ring (12) is fitted in the groove. The push rod head (13) forms an interference fit with the push rod sleeve (21) through the sealing ring (12).

5. The pusher for arthroscopic cartilage repair surgery according to claim 1, characterized in that, The handle (3) is provided with a gripping handle (31); the angle between the handle (3) and the outer tube (2) is an obtuse angle.

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