CN219021468U

CN219021468U - Knee joint anterior and posterior cruciate ligament femur side tunnel positioner

Info

Publication number: CN219021468U
Application number: CN202223032504.0U
Authority: CN
Inventors: 冯志伟; 刘殿奎; 刘娟; 杨辉; 王超; 梁振星; 常德勇; 李治国
Original assignee: Fengfeng General Hospital Of North China Medical And Health Group
Current assignee: Fengfeng General Hospital Of North China Medical And Health Group
Priority date: 2022-11-15
Filing date: 2022-11-15
Publication date: 2023-05-16
Anticipated expiration: 2032-11-15

Abstract

The utility model relates to the technical field of medical appliances, in particular to a knee joint anterior and posterior cruciate ligament femur side tunnel positioner which comprises a fixed block, wherein a through hole is formed in the inner side of the fixed block, a sleeve is fixedly connected to the inner wall of the through hole, a guide tube is fixedly connected to one end of the sleeve, a guide tube is fixedly connected to one end of the guide tube, which is far away from the sleeve, a guide needle is arranged in the sleeve, and a limiting component is arranged at one end of the guide tube, which is far away from the guide tube; the limiting component comprises a limiting block which is rotationally connected with the outer side of the fixed cylinder. The guide pin is pushed forward continuously until the guide pin abuts against the inner bone surface of the femur, the limiting block is loosened manually, the limiting block is restored to the original position under the action of the torsion spring and is clamped with the corresponding limiting groove, the guide pin is limited, the guide pin is kept stable, medical staff is not required to hold the guide pin all the time, and the operation difficulty of the medical staff is reduced.

Description

Knee joint anterior and posterior cruciate ligament femur side tunnel positioner

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a knee joint anterior and posterior cruciate ligament femur side tunnel positioner.

Background

Anterior cruciate ligament injury is one of the most frequently occurring knee joint motion injuries, and repair and reconstruction of anterior cruciate ligament injury has been an important research topic in the fields of orthopedics and sports trauma, and recently, anterior cruciate ligament anatomy reconstruction surgery has received more attention. The basic process of anterior cruciate ligament anatomy reconstruction surgery is: surgical access (anterolateral access, medial access, lateral access), tunnel positioning (tibial side, femoral side), drilling (tibial side, femoral side), implantation of implants, suturing. In the process, the emphasis is on tunnel positioning, and the higher the accuracy of tunnel positioning is, the shorter the operation time is, and the higher the possibility of success of the operation is.

The utility model provides a knee joint anterior and posterior cruciate ligament femur side tunnel positioner of current patented patent number CN101919720B, includes the crotch body, the gib head of crotch body stretches into knee joint chamber and points forward, posterior cruciate ligament femur side dead center, the long handle of gib head up and be located knee joint femur front side top, the long handle is connected with a transversely set up arc spout, the arc spout is inlayed and is equipped with the arc pole that can slide relative arc spout, the drilling rod guide pin bushing of a straight ligament gib head tip is installed to the arc pole expansion end.

In view of the above related art, the inventor considers that when the existing positioner is in use, the guide needle needs to be manually held to keep the guide needle stable when the guide needle is pushed until the guide needle abuts against the inner bone surface of femur, and the operation difficulty of medical staff is increased, so that the utility model provides the anterior and posterior cruciate ligament femur side tunnel positioner for knee joints.

Disclosure of Invention

The utility model provides a knee joint anterior and posterior cruciate ligament femur side tunnel positioner to solve the current positioner that proposes among the above-mentioned prior art in use, when advancing the guide pin until support when leaning on the femur inner bone face, need the manual work to hold the guide pin and keep the stability of guide pin, increased medical staff's the problem of the operation degree of difficulty.

In order to achieve the above purpose, the present application provides the following technical solutions: the knee joint anterior and posterior cruciate ligament femur side tunnel positioner comprises a fixed block, wherein a through hole is formed in the inner side of the fixed block, a sleeve is fixedly connected to the inner wall of the through hole, a guide pipe is fixedly connected to one end of the sleeve, a fixed barrel is fixedly connected to one end of the guide pipe away from the sleeve, a guide pin is arranged in the sleeve, and a limiting component is arranged at one end of the fixed barrel away from the guide pipe; the limiting assembly comprises a limiting block which is rotationally connected with the outer side of the fixed cylinder, one end of the limiting block is in an arc-shaped arrangement, the limiting block is connected with the fixed cylinder through a torsion spring, and a plurality of limiting grooves which are matched with the limiting block are formed in the outer side of the guide pin.

Preferably, the side fixedly connected with of fixed block is a pair of arc, a pair of the arc is the symmetry setting, and a pair of sliding connection has the sliding block between the arc, a pair of the arc adjacent one side all seted up with the sliding tray of sliding block looks adaptation.

Preferably, both sides of the sliding block are fixedly connected with fixing rods, and the inner sides of a pair of arc plates are provided with sliding grooves matched with the fixing rods.

Preferably, one end of the pair of fixing rods, which is far away from the sliding block, is fixedly connected with a threaded rod, and the outer side of the threaded rod is in threaded connection with a nut.

Preferably, one end of the sliding block is fixedly connected with a hook body, and one end of the hook body is fixedly connected with a hook head.

Preferably, a plurality of grooves are formed in the outer sides of the pair of arc-shaped plates, and the grooves are uniformly distributed.

In summary, the utility model has the technical effects and advantages that:

the guide pin is pushed forward continuously until the guide pin abuts against the inner bone surface of the femur, the limiting block is loosened manually, the limiting block is restored to the original position under the action of the torsion spring and is clamped with the corresponding limiting groove, the guide pin is limited, the guide pin is kept stable, medical staff is not required to hold the guide pin all the time, and the operation difficulty of the medical staff is reduced.

According to the utility model, the hook body is dragged to drive the sliding block to slide along the sliding groove and move to a proper position, the nut is manually connected with the threaded rod until the sliding block is propped against the arc-shaped plate, the angle between the sliding block and the hook body is kept, the hook head is propped against the tibia inner bone surface, and the angle between the hook body and the hook head is conveniently adjusted by adjusting the tightness of the nut.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the prior description will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a first view angle axis measurement structure of the present utility model;

FIG. 2 is a schematic view of a second view angle axis measurement structure according to the present utility model;

FIG. 3 is a schematic view of the structure of the fixing barrel of the present utility model;

fig. 4 is a schematic diagram of the structure of fig. 1 at a.

In the figure: 1. a fixed block; 2. a sleeve; 3. a guide tube; 4. a guide pin; 5. an arc-shaped plate; 6. a chute; 7. a nut; 8. a threaded rod; 9. a groove; 10. a sliding block; 11. a hook body; 12. a hook head; 13. a fixed rod; 14. a limiting block; 15. a limit groove; 16. and fixing the cylinder.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples: referring to figures 1-4, the knee joint anterior and posterior cruciate ligament femur side tunnel positioner comprises a fixed block 1, wherein a through hole is formed in the inner side of the fixed block 1, a sleeve 2 is fixedly connected to the inner wall of the through hole, a guide tube 3 is fixedly connected to one end of the sleeve 2, a fixed barrel 16 is fixedly connected to one end of the guide tube 3 away from the sleeve 2, a guide pin 4 is arranged in the sleeve 2, and a limiting component is arranged at one end of the fixed barrel 16 away from the guide tube 3; the limiting component comprises a limiting block 14 rotationally connected with the outer side of a fixed cylinder 16, one end of the limiting block 14 is in an arc shape, the limiting block 14 is connected with the fixed cylinder 16 through a torsion spring, a plurality of limiting grooves 15 matched with the limiting block 14 are formed in the outer side of a guide pin 4, the guide pin 4 is pushed out along the direction of a sleeve 2, the guide pin 4 is drilled into a joint cavity along a tibia, then femur side tunnel positioning is carried out, the angle of a knee joint of a patient is adjusted under an arthroscope according to the damage condition of the patient, the limiting block 14 is pulled open manually, then the guide pin 4 is pushed forward until the guide pin is abutted against the femur inner bone surface, the limiting block 14 is loosened manually, the limiting block 14 is restored to the original position under the action of the torsion spring, the guide pin 4 is clamped with the corresponding limiting grooves 15, and the contact point of the guide pin 4 and the femur inner bone surface is the positioning point of the femur tunnel.

Referring to fig. 1-4, a pair of arc plates 5 are fixedly connected to the side of a fixed block 1, the pair of arc plates 5 are symmetrically arranged, a sliding block 10 is slidably connected between the pair of arc plates 5, sliding grooves matched with the sliding block 10 are formed in one sides of the pair of arc plates 5, fixing rods 13 are fixedly connected to two sides of the sliding block 10, sliding grooves 6 matched with the fixing rods 13 are formed in the inner sides of the pair of arc plates 5, threaded rods 8 are fixedly connected to the outer sides of the pair of fixing rods 13 at the ends, far away from the sliding block 10, of the threaded rods 8, nuts 7 are connected to positions of the hook bodies 11 in a threaded mode, the hook bodies 11 are dragged to drive the sliding block 10 to slide along the sliding grooves, the nuts 7 are manually connected with the threaded rods 8 until the sliding blocks abut against the arc plates 5, angles of the sliding block 10 and the hook bodies 11 are maintained, a plurality of grooves 9 are formed in the outer sides of the pair of the arc plates 5, the grooves 9 are uniformly distributed, and the arc plates 9 are conveniently held by the plurality of grooves 9.

The working principle of the utility model is as follows: placing the guide pin 4 in the sleeve 2; the method comprises the steps of determining the opening position of skin, cutting skin, performing passive separation until the outer bone surface of tibia, placing a hook head 12 in a joint cavity of a patient through an operation entrance way, observing and adjusting the angle of the hook head 12 under an arthroscope, adjusting the position of a hook body 11, dragging the hook body 11 to drive a sliding block 10 to slide along a sliding groove, moving to a proper position, manually connecting a nut 7 with a threaded rod 8 until the sliding block is abutted against an arc-shaped plate 5, keeping the angles of the sliding block 10 and the hook body 11, enabling the hook head 12 to abut against the inner bone surface of tibia, pushing out a guide needle 4 along the sleeve 2, drilling into the joint cavity along tibia, then performing femur side tunnel positioning, adjusting the angle of a knee joint of the patient under the arthroscope according to the damage condition of the patient, manually pulling out a limiting block 14, continuing to advance the guide needle 4 until the guide needle abuts against the inner bone surface of femur, manually loosening the limiting block 14, restoring the limiting block 14 to the original position under the action of a torsion spring, clamping a corresponding limiting groove 15, limiting the guide needle 4, at the moment, enabling the contact point of the guide needle 4 with the inner bone surface of femur, then taking the guide needle 4 out of a drilling hole, and placing a proper tunnel 4 into a drill bit.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. A knee joint anterior and posterior cruciate ligament femoral tunnel positioner, characterized in that: the novel guide pin structure comprises a fixed block (1), wherein a through hole is formed in the inner side of the fixed block (1), a sleeve (2) is fixedly connected to the inner wall of the through hole, a guide pipe (3) is fixedly connected to one end of the sleeve (2), a fixed cylinder (16) is fixedly connected to one end, away from the sleeve (2), of the guide pipe (3), a guide pin (4) is arranged in the sleeve (2), and a limiting component is arranged at one end, away from the guide pipe (3), of the fixed cylinder (16);

the limiting assembly comprises a limiting block (14) which is rotationally connected with the outer side of the fixed cylinder (16), one end of the limiting block (14) is in an arc-shaped arrangement, the limiting block (14) is connected with the fixed cylinder (16) through a torsion spring, and a plurality of limiting grooves (15) which are matched with the limiting block (14) are formed in the outer side of the guide pin (4).

2. A knee anterior and posterior cruciate ligament femoral tunnel positioner according to claim 1, wherein: the side fixedly connected with of fixed block (1) is a pair of arc (5), a pair of arc (5) are the symmetry setting, and a pair of sliding connection has sliding block (10) between arc (5), a pair of the sliding groove with sliding block (10) looks adaptation has all been seted up to one side that arc (5) are adjacent.

3. A knee anterior and posterior cruciate ligament femoral tunnel positioner according to claim 2, wherein: both sides of the sliding block (10) are fixedly connected with fixing rods (13), and the inner sides of a pair of arc plates (5) are provided with sliding grooves (6) matched with the fixing rods (13).

4. A knee anterior and posterior cruciate ligament femoral tunnel positioner according to claim 3, wherein: one end, far away from the sliding block (10), of the pair of fixing rods (13) is fixedly connected with a threaded rod (8), and the outer side of the threaded rod (8) is in threaded connection with a nut (7).

5. A knee anterior and posterior cruciate ligament femoral tunnel positioner according to claim 4, wherein: one end of the sliding block (10) is fixedly connected with a hook body (11), and one end of the hook body (11) is fixedly connected with a hook head (12).

6. A knee anterior and posterior cruciate ligament femoral tunnel positioner according to claim 2, wherein: a plurality of grooves (9) are formed in the outer sides of the pair of arc plates (5), and the grooves (9) are uniformly distributed.