CN110693594A - intramedullary nail sight - Google Patents

Abstract

The present invention relates to an intramedullary nail sight, which comprises a handle, a lateral support, a gear support and at least one locking nut. The lateral support can be connected to any one of the two sides of the gear support, so as to meet the surgical requirements for implantation of intramedullary nails on the left and right affected limbs. The intramedullary nail sight of the present invention improves the convenience of application and reduces the cost of hospital surgical instruments at the same time.

Description

intramedullary nail sight

technical field

The invention relates to the technical field of orthopedic medical instruments, in particular to an intramedullary nail sight.

Background technique

The use of intramedullary nails to treat fractures is a relatively common method of internal fixation, especially for femur, tibia, and humeral shaft fractures. Based on the structural characteristics of the intramedullary nail, it belongs to biological fixation (relatively stable), and the stress distribution is relatively uniform, which has little effect on the fracture end, and its elasticity is beneficial to fracture healing.

In clinical practice, intramedullary nail aiming and fixation are often assisted by intramedullary nail sights. In this process, the intramedullary nail, handle, proximal aiming device, gear bracket, distal aiming device, and lateral bracket are first assembled, and then supplemented by E-type clamps and positioning rods to perform the positioning platform at the distal end of the intramedullary nail. The positioning is pressed down, and finally the protective sleeve is clamped in the sleeve hole of the lateral support, and the locking nail is implanted into the distal locking nail hole of the intramedullary nail through the protective sleeve to complete the distal locking nail fixation.

Locking pins are usually implanted on the inside of the patient's affected limb. Therefore, when the side bracket is fixedly connected with the gear bracket, the positional relationship between the two is determined. That is, the intramedullary nail sight with one connection method is only suitable for the intramedullary nail implantation operation of one of the left and right affected limbs. Therefore, two types of intramedullary nail sights with different connection directions between the lateral bracket and the gear bracket are usually required to meet the surgical application requirements of the left and right affected limbs of the patient. This objectively directly increases the cost of medical equipment in the hospital and brings inconvenience to the operation to a certain extent.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an intramedullary nail sight to solve the above technical problems existing in the prior art.

The intramedullary nail sight of the present invention comprises a handle, a lateral support, a gear support and at least one locking nut. The lateral support has a connecting end and a free end. The gear bracket has a proximal end and a distal end. The proximal end has a gear segment. The gear segments have scales. The distal portion has a connecting section. The connecting segment has opposite sides. The connecting end can be fixed on either side of the two sides in a detachable manner. The intramedullary nail sight of the present invention can be applied to either side of the patient's left or right affected limb according to actual needs, without the need for two intramedullary nail sights with different connection directions of the lateral bracket and the gear bracket. , which objectively reduces the cost of equipment in the hospital and brings convenience to the smooth operation of the operation.

According to an aspect of the intramedullary nail sight of the present invention, the connecting section has two through holes, the axes of the two through holes are parallel to each other, and the two ends of the two through holes are located on the two sides respectively. . Such an arrangement enables the shift bracket to have a structure that can be easily and firmly connected to the shift bracket through either side of the two sides.

According to another aspect of the intramedullary nail sight of the present invention, the connecting end has a threaded joint and a protrusion. The threaded joint and the protrusion are respectively inserted into the two through holes from one of the two sides, and the threaded joint is fixed by one of the locking nuts on the other side of the two sides . Such an arrangement enables the lateral support to be fastened to either side of the two sides in a convenient and firm manner.

According to another aspect of the intramedullary nail sight of the present invention, the connecting end has two threaded joints. The two threaded joints are respectively inserted into the two through holes from one of the two sides, and the two threaded joints are respectively connected by two of the locking nuts on the other side of the two sides. fixed. Such an arrangement enables the lateral support to be fastened to either side of the two sides in a convenient and firm manner.

According to another aspect of the intramedullary nail sight of the present invention, the distal end portion has a sleeve hole, the axis of the sleeve hole is perpendicular to the plane where the axes of the two through holes are located, and the sleeve The axis of the hole is equidistant from the axis of the two through holes. Such arrangement enables the positioning rod to be inserted into the distal positioning rod hole of the intramedullary nail through the positioning rod sleeve, so that the distal end of the intramedullary nail is accurately and smoothly locked.

According to yet another aspect of the intramedullary nail sight of the present invention, the proximal portion has a distal aiming device. Such an arrangement facilitates the aiming operation of the distal end of the intramedullary nail and improves the aiming accuracy.

According to yet another aspect of the intramedullary nail sight of the present invention, the lateral support is made of an X-ray transparent material. Such an arrangement can prevent the lateral support from blocking the X-ray imaging.

According to yet another aspect of the intramedullary nail sight of the present invention, the free end has a screw. Such arrangement helps the protective sleeve to be better fixed in the sleeve hole and prolongs the service life of the side bracket to a certain extent.

According to another aspect of the intramedullary nail sight of the present invention, the free end has two sleeve holes, and the two sleeve holes are axisymmetric about the axis of the screw. Such an arrangement facilitates that the locking nail can pass through the through hole of the sleeve and be smoothly implanted into the locking nail hole at the distal end of the intramedullary nail.

Description of drawings

1 is a schematic structural diagram of an intramedullary nail sight according to an embodiment of the present invention;

2 is a schematic structural diagram of a lateral support according to an embodiment of the present invention;

3 is a schematic structural diagram of a gear bracket according to an embodiment of the present invention;

Reference numerals: 1, intramedullary nail sight; 2, lateral support; 21, connecting end; 211, threaded joint; 213, protrusion; 22, free end; 3, gear bracket; 31, proximal end; 311, gear segment; 32, distal end; 321, connecting segment; 3211, both sides (one); 3213, 3214, through hole; 4, handle; 5, positioning rod; 6, positioning rod sleeve; 7 , intramedullary nail; 8, lock nut.

Detailed ways

The technical solutions of the present invention will be described in detail below with reference to the accompanying drawings. The described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

FIG. 1 is a schematic structural diagram of an intramedullary nail sight according to an embodiment of the present invention. The intramedullary nail sight 1 includes a lateral support 2 , a gear support 3 , a handle 4 and at least one locking nut 8 . The lateral support 2 has a connecting end 21 and a free end 22 . The connecting end 21 of the side bracket 2 is connected with the distal end 32 of the gear bracket 3 through the connecting section 321 , and the connecting end 21 has a threaded joint 211 and a protrusion 213 . The gear bracket 3 includes a proximal end portion 31 and a distal end portion 32 . The proximal end has a gear segment 311 . The gear segment 311 has scales. The distal end has a connecting segment 321 . The connecting segment 321 has opposite sides. The connecting end 21 can be detachably fixed to either side of the two sides. This arrangement allows the intramedullary nail sight to be applied to either side of the patient's left or right affected limb according to actual needs, without the need for two intramedullary nail sightings with different connection directions between the lateral bracket and the gear bracket. The device can objectively reduce the cost of the hospital's equipment and bring convenience to the smooth operation of the operation.

In a further embodiment, the connecting section 321 has two through holes 3213 and 3214, the axes of the two through holes 3213 and 3214 are parallel to each other, and the two ends of the two through holes 3213 and 3214 are located on two sides respectively. Such an arrangement enables the shift bracket to have a structure that can be easily and securely connected to the shift bracket through either side of the two sides.

In a further embodiment, the connecting end 21 has a threaded joint 211 and a protrusion 213 . The threaded joint 211 and the protrusion 213 are respectively inserted into the two through holes 3213 , 3214 from one of the two sides, and the threaded joint 211 is fixed by a lock nut 8 on the other of the two sides. Such an arrangement allows the lateral support to be attached to either side of the two sides in a convenient and secure manner.

In another embodiment, the connection end 21 has two threaded connections. The two threaded joints are respectively inserted into the two through holes 3213, 3214 from one of the two sides, and the two threaded joints are respectively fixed by two locking nuts on the other of the two sides. Such an arrangement allows the lateral support to be attached to either side of the two sides in a convenient and secure manner.

In a further embodiment, the distal portion 32 has a sleeve hole. The axis of the sleeve hole is perpendicular to the plane where the axes of the two through holes 3213 and 3214 are located, and the distance between the axis of the sleeve hole and the axis of the two through holes 3213 and 3214 is equal. Such arrangement enables the positioning rod to be inserted into the distal positioning rod hole of the intramedullary nail through the positioning rod sleeve, so that the distal end of the intramedullary nail is accurately and smoothly locked.

In a further embodiment, the proximal portion 31 has a distal aiming device. Such an arrangement facilitates the aiming operation of the distal end of the intramedullary nail and improves the aiming accuracy.

In a further embodiment, the lateral support 2 is made of an X-ray transparent material. Such an arrangement can prevent the lateral support from blocking the X-ray imaging.

In a further embodiment, the free end 22 has a screw. Such arrangement helps the protective sleeve to be better fixed in the sleeve hole and prolongs the service life of the side bracket to a certain extent.

In a further embodiment, the free end 22 has two sleeve holes, and the two sleeve holes are axisymmetric about the axis of the screw. Such an arrangement facilitates that the locking nail can pass through the through hole of the sleeve and be smoothly implanted into the locking nail hole at the distal end of the intramedullary nail.

Follow these steps in sequence:

1. According to the needs of the operation, connect the connecting end of the lateral bracket to one of the two sides of the connecting section of the gear bracket, and insert the positioning rod through the positioning rod sleeve into the hole of the positioning rod sleeve at the distal end of the intramedullary nail. ;

2. Place the two protective sleeves in the two sleeve holes of the side bracket body respectively so that the two protective sleeves are squeezed and fixed in the two sleeve holes;

3. Use an orthopedic drill to pre-drill the mounting holes for the locking nails through the two protective sleeves respectively;

4. Insert the two locking nails through the two protective sleeves into the distal locking nail holes of the intramedullary nail respectively.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it is still The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features thereof may be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (9)

1. Intramedullary nail sight, is characterized in that, comprises: a handle (4); a lateral support (2), which has a connecting end (21) and a free end (22); A gear bracket (3) having a proximal end (31) and a distal end (32), the proximal end (31) having a gear segment (311), the gear segment (311) ) with graduations, said distal portion (32) having a connecting segment (321); and at least one lock nut (8); Wherein, the connecting section (321) has two opposite sides, and the connecting end (21) can be fixed on either side of the two sides in a detachable manner. 2. The intramedullary nail sight according to claim 1, wherein the connecting segment (321) has two through holes (3213, 3214), and the axes of the two through holes (3213, 3214) are parallel to each other, and two ends of the two through holes (3213, 3214) are respectively located on the two sides. 3. The intramedullary nail sight according to claim 2, wherein the connecting end (21) has a threaded joint (211) and a protrusion (213), the threaded joint (211) and the The protrusions (213) are respectively inserted into the two through holes (3213, 3214) from one of the two sides, and the threaded joint (211) is formed by a Secure with the lock nut (8). 4. The intramedullary nail sight according to claim 2, wherein the connecting end (21) has two threaded joints, and the two threaded joints are respectively inserted into the two threaded joints from one of the two sides. The two through holes (3213, 3214) are formed, and the other side of the two threaded joints is respectively fixed by the two locking nuts. 5. The intramedullary nail sight according to claim 2, wherein the distal end portion (32) has a sleeve hole, and the axis of the sleeve hole is connected to the two through holes (3213, The plane on which the axis of 3214) is located is vertical, and the distance between the axis of the sleeve hole and the axis of the two through holes (3213, 3214) is equal. 6. The intramedullary nail sight according to claim 1, wherein the proximal end portion (31) has a distal sighting device. 7. The intramedullary nail sight according to claim 1, characterized in that the lateral support (2) is made of an X-ray penetrable material. 8. The intramedullary nail sight according to claim 1, wherein the free end (22) has a screw. 9 . The intramedullary nail sight according to claim 8 , wherein the free end ( 22 ) has two sleeve holes, and the two sleeve holes are axisymmetric about the axis of the screw. 10 .

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