A cartilage partial defect transplantation component

Abstract

The invention discloses a cartilage partial defect transplantation component, comprising: a fixing nail, a sliding hammer, a guide tube, and a guide needle; the fixing nail is composed of a nail body and a nail cap, wherein the nail body is in a triangular pyramid shape; the sliding hammer is composed of a hammer rod, a hammer body, a limiting part, and a head end, wherein the lower part of the hammer rod is connected to the head end, and the hammer rod is provided with limiting parts at positions close to the upper and lower ends, and the hammer body is slidably installed on the hammer rod between the two limiting parts; the upper and lower ends of the guide tube are open, and the interior is hollow, and the guide needle can pass through the guide tube; the fixing nail structure of the invention can reduce resistance and wear on bone during implantation, and can be implanted in a vertical force direction without the need for rotational implantation like a threaded nail, thereby reducing damage to bone caused by frictional heat; the guiding effect of the guide needle can avoid directional deviation during implantation; the sliding hammer applies force to implant the fixing nail; the detachable connection structure of the sliding hammer and the nail cap can not only implant the fixing nail, but also apply force in the opposite direction to remove the fixing nail.

Description

Technical Field

[0001] The invention belongs to the technical field of orthopedic medical devices, and in particular relates to a cartilage partial defect transplantation component. Background Art

[0002] In daily life, many people often suffer from articular cartilage damage due to unscientific exercise methods; if the cartilage damage is not treated and repaired in time, it will cause certain harm to the body; usually, the repair method should be selected according to the degree of cartilage damage; when the cartilage damage defect is serious, surgical treatment is required; artificial transplantation, by making an incision at the damaged part, and then combining the body's own bone tissue with artificial bone, can effectively achieve the effect of promoting generation, which will improve the growth rate of bones and achieve the effect of repair;

[0003] Cartilage defect repair requires the use of fixation nails, but the nail body structure of the current fixation nails is a threaded structure, which will cause great wear on the bone when implanted into the bone or removed, and the threaded structure makes the implantation friction greater; basically, rotational implantation is required, and the friction with the bone during rotation generates a lot of heat, which will cause damage to the bone. Summary of the invention

[0004] In order to solve the above technical problems, the present invention designs a cartilage partial defect transplantation component, wherein the nail body structure of the fixing nail adopts a triangular pyramid structure, and the surface has no threads, so that the nail body can be implanted into the bone after applying force in the vertical direction, thereby reducing resistance and heat generation during the implantation process, and applying force in the opposite direction when removing; whether in the implantation or removal process, the wear on the bone can be reduced;

[0005] In order to achieve the above technical effects, the present invention is implemented through the following technical solutions: a cartilage partial defect transplantation component, comprising: a fixing nail, a sliding hammer, a guide tube, and a guide needle; the fixing nail is composed of a nail body and a nail cap, wherein the nail body is in a triangular pyramid shape; the sliding hammer is composed of a hammer rod, a hammer body, a limiting part, and a head end, wherein the lower part of the hammer rod is connected to the head end, and the hammer rod is provided with limiting parts at positions near the upper and lower ends, and the hammer body is slidably installed on the hammer rod between the two limiting parts; the upper and lower ends of the guide tube are open, and the interior is hollow, and the guide needle can pass through the guide tube;

[0006] Preferably, a guide needle channel is provided inside the nail body, and a guide needle channel outlet is provided at the tip of the nail body;

[0007] Preferably, a head end placement inlet is opened in the middle of the nail cap, and the head end placement inlet is communicated with the guide needle channel of the nail body;

[0008] Preferably, the side walls of the head end insertion port are symmetrically provided with card slots;

[0009] Preferably, a clamping pin matched with the clamping slot is arranged on both sides of the head end of the slide hammer, the clamping pin is connected with the pressing buckle through the transmission rod, and the pressing buckle is movably connected to the upper side of the connection between the hammer rod and the head end; the clamping pin and the pressing buckle are connected to the inside of the hammer rod through a spring;

[0010] Preferably, the hammer rod is open at both ends, and is hollow inside, forming a guide needle channel; the guide needle can pass through the guide needle channel inside the hammer rod;

[0011] Preferably, the upper and lower bottom surface structural shapes of the nail cap are formed by 3D printing according to the bone defect site of the patient, and are personalized and restore the patient's physiological anatomical structure;

[0012] Preferably, a detachable sealing plug is installed in the head end inlet, the sealing plug is supported by medical silica gel, and a groove is provided on the top surface; the sealing plug is taken out by a plug removal hook;

[0013] Preferably, the inner wall of the head end insertion port is coated with an anti-coagulation coating film;

[0014] Preferably, the lower end surface of the guide tube is designed to be an arc-shaped structure that can fit the bone surface.

[0015] Another object of the present invention is to provide a method for using a cartilage partial defect transplant assembly:

[0016] S1: Place the guide tube at the fixed implantation point, then pass the guide needle through the guide tube, and implant the guide needle into the bone from the above point under the guidance of the guide tube;

[0017] S2: After the guide pin is implanted, the guide tube is removed and the guide pin is inserted through the guide pin channel of the fixed pin. At this time, the tip of the pin can be exactly opposite to the implantation point;

[0018] S3: Pass the slide hammer through the guide pin through the guide pin channel in the slide hammer, and place the head end of the slide hammer into the head end placement inlet of the nail cap, so that the nail can be automatically inserted into the card slot, thereby connecting the slide hammer and the nail cap of the fixed nail;

[0019] S4: The pituitary gland on the sliding hammer is hit from top to bottom against the limit part below. At this time, the force can be transmitted to the fixing nail through the sliding hammer, and the fixing nail is gradually implanted into the bone. After the operation is completed, the buckle is pressed inward, and the nail is retracted, and the head end of the sliding hammer is withdrawn from the nail cap.

[0020] S5: When the fixing nail needs to be removed, just connect the head of the sliding hammer with the nail cap, and hit the upper limit part with force from bottom to top. At this time, the opposite force direction will bring the fixing nail out of the bone.

[0021] The beneficial effects of the present invention are:

[0022] The fixing nail structure in the cartilage loss transplant component of the present invention can reduce resistance and bone wear during the implantation process. It can be implanted in the vertical force direction without the need for rotational implantation like a threaded nail, thereby reducing the damage to the bone caused by frictional heat; the direction deviation during the implantation process can be avoided by the guiding effect of the guide needle; the fixing nail is implanted by applying force with a sliding hammer; the detachable connection structure between the sliding hammer and the nail cap can not only implant the fixing nail, but also apply force in the opposite direction to remove the fixing nail; the sealing plug can prevent blood stains from clogging the head end insertion port during the retention of the fixing nail in the body, which affects the later installation of the head end of the sliding hammer in the head end insertion port to remove the fixing nail; the personalized 3D printing preparation can make the nail cap part of the fixing nail fit closely with the bone defect part to the greatest extent, thereby improving stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0024] Figure 1A 1 is a schematic diagram of the overall structure of the fixing nail of the present invention;

[0025] Figure 1B The overall structure of the fixing nail of the present invention is shown in FIG. Figure 2 ;

[0026] Figure 2 is a bottom view of the fixing nail of the present invention;

[0027] Figure 3 is a cross-sectional view of a nail cap of the present invention;

[0028] Figure 4 is a partial cutaway view of the end portion of the slide hammer head of the present invention;

[0029] Figure 5 It is a schematic diagram of the overall structure of the slide hammer of the present invention;

[0030] Figure 6 It is a schematic diagram of the overall structure of the guide tube and the guide needle of the present invention;

[0031] Figure 7 It is a schematic diagram of the plug removal hook structure of the present invention.

[0032] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0033] 1-fixing nail, 101-nail body, 102-nail cap, 1021-head end entrance, 1022-slot, 1023-sealing plug, 2-sliding hammer, 201-hammer rod, 2011-guide needle channel, 202-hammer body, 203-limiting part, 204-head end, 2041-nail, 2042-press buckle, 2043-transmission rod, 2044-spring, 3-guide cylinder, 4-guide needle, 5-plug removal hook. DETAILED DESCRIPTION

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

[0035] Example 1

[0036] See also Figures 1A to 6 As shown, a cartilage partial defect transplantation assembly comprises: a fixing nail 1, a sliding hammer 2, a guide tube 3, and a guide needle 4; the fixing nail 1 is composed of a nail body 101 and a nail cap 102, wherein the nail body 101 is in a triangular pyramid shape; the sliding hammer 2 is composed of a hammer rod 201, a hammer body 202, a limiting portion 203, and a head end 204, wherein the lower part of the hammer rod 201 is connected to the head end 204, and the hammer rod 201 is provided with limiting portions 203 near the upper and lower ends, and the hammer body 202 is slidably mounted on the hammer rod 201 between the two limiting portions 203; the upper and lower ends of the guide tube 3 are opened, and the interior is hollow, and the guide needle 4 can pass through the guide tube 3;

[0037] Preferably, a guide needle channel is provided inside the nail body 101, and a guide needle channel outlet is provided at the tip of the nail body 101; the fixing nail 1 can pass through the guide needle 4;

[0038] Preferably, a head end insertion port 1021 is provided in the middle of the nail cap 102, and the head end insertion port 1021 is communicated with the guide needle channel of the nail body 101;

[0039] Preferably, the side walls of the head end insertion port 1021 are symmetrically provided with slots 1022;

[0040] Preferably, a staple 2041 cooperating with the slot 1022 is symmetrically arranged on both sides of the head end 204 of the slide hammer 2, the staple 2041 is connected to the press buckle 2042 through the transmission rod 2043, and the press buckle 2042 is movably connected to the upper side of the connection between the hammer rod 201 and the head end 204; the staple 2041 and the press buckle 2042 are connected to the inside of the hammer rod 201 through a spring 2044; the head end 204 of the slide hammer 2 can be detachably connected to the nail cap 102 through the staple 2041 and the slot 1022;

[0041] Preferably, the hammer rod 201 is open at both ends, and is hollow inside, forming a guide needle channel 2011; the guide needle 4 can pass through the guide needle channel 2011 inside the hammer rod 201;

[0042] Preferably, the upper and lower bottom surface structures of the nail cap 102 are formed by 3D printing according to the bone defect site of the patient, and are personalized and restore the patient's physiological anatomical structure; personalized 3D printing preparation can make the nail cap 102 part of the fixing nail 1 fit closely with the bone defect part to the greatest extent, thereby improving stability;

[0043] Preferably, a sealing plug 1023 is detachably installed in the head end insertion port 1021, and the sealing plug 1023 is supported by medical silicone and has a groove on the top surface; the sealing plug 1023 is taken out by the plug removal hook 5; the sealing plug 1023 can prevent blood stains from clogging in the head end insertion port 1021 during the retention of the fixing nail 1 in the body, which affects the removal of the fixing nail 1 by installing the head end 204 of the sliding hammer 2 in the head end insertion port 1021 at a later time;

[0044] Preferably, the inner wall of the head end insertion port 1021 is coated with an anticoagulant coating film to prevent blood coagulation from occurring in the head end insertion port 1021;

[0045] Preferably, the lower end surface of the guide tube 3 is designed to be an arc-shaped structure that can fit the bone surface.

[0046] In summary, the fixed nail structure in the cartilage loss transplant component of the present invention can reduce resistance and bone wear during the implantation process, and can be implanted in the vertical force direction without rotating it like a threaded nail, thereby reducing the damage to the bone caused by frictional heat; the guiding effect of the guide needle can avoid directional deviation during the implantation process; the sliding hammer applies force to implant the fixed nail; the detachable connection structure between the sliding hammer and the nail cap can not only implant the fixed nail, but also apply force in the opposite direction to remove the fixed nail; the sealing plug can prevent blood stains from clogging the head end insertion port during the retention of the fixed nail in the body, affecting the later installation of the head end of the sliding hammer in the head end insertion port to remove the fixed nail; the personalized 3D printing preparation can make the nail cap part of the fixed nail fit closely with the bone defect part to the greatest extent, thereby improving stability.

[0047] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0048] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A cartilage partial defect transplantation component, characterized in that: include: A fixing nail, a sliding hammer, a guide tube, and a guide needle; the fixing nail is composed of a nail body and a nail cap, wherein the nail body is in a triangular pyramid shape; the sliding hammer is composed of a hammer rod, a hammer body, a limiting part, and a head end, wherein the lower part of the hammer rod is connected to the head end, and the hammer rod is provided with limiting parts near the upper and lower ends, and the hammer body is slidably mounted on the hammer rod between the two limiting parts; the upper and lower ends of the guide tube are open, and the interior is hollow, and the guide needle can pass through the guide tube; the lower end surface of the guide tube is designed to be an arc-shaped structure that fits the bone surface; A guide needle channel is provided inside the nail body, and a guide needle channel outlet is provided at the tip of the nail body; A head end placement entrance is provided in the middle of the nail cap, and the head end placement entrance is communicated with the guide needle channel of the nail body; The side walls of the head end inlet are symmetrically provided with card slots; A clamping pin matched with the clamping slot is symmetrically arranged on both sides of the head end of the sliding hammer, the clamping pin is connected with the pressing buckle through the transmission rod, and the pressing buckle is movably connected to the upper side of the connection between the hammer rod and the head end; the clamping pin and the pressing buckle are connected to the inside of the hammer rod through a spring; The hammer rod has openings at the upper and lower ends and is hollow inside to form a guide needle channel; The guide pin can pass through the guide pin channel inside the hammer rod; The upper and lower bottom surface structures of the nail cap are formed by 3D printing according to the bone defect site of the patient, and are personalized and restore the patient's physiological anatomical structure; A detachable sealing plug is installed in the head end inlet, the sealing plug is made of medical silicone and has a groove on the top surface; the sealing plug is taken out by a plug removal hook; the inner side wall of the head end inlet is coated with an anticoagulant coating.

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