CN213552266U - Kirschner wire positioning guider - Google Patents

Abstract

The utility model belongs to the field of medical appliances, in particular to a kirschner wire positioning guider, which comprises a fixed arm, a movable arm and a locking mechanism; the movable arm is assembled on the transverse rod part at the upper part of the fixed arm through the guide channel and can move along the transverse rod part; a locking mechanism for locking the movable arm to move towards one side far away from the fixed arm is arranged corresponding to the movable arm; the lower part of the movable arm is provided with a guide sleeve, the aperture of a central hole of the guide sleeve is matched with the outer diameter of the Kirschner wire, and the tail end of the fixed arm is provided with a positioning groove which is just opposite to the central hole of the guide sleeve. The utility model discloses when being applied to bone traction, bone fracture during operation such as fixed, can ensure the needle insertion angle, make clear out the needle position, consequently can insert the needle according to the scheme of predetermineeing to can effectively prevent because of inserting the needle angle and go out the repeated needle insertion problem of many times that the needle position is unclear to cause, whole convenient operation, swift has reduced and has beaten the reliance of kirschner's needle operation to doctor clinical experience.

Description

Kirschner wire positioning guider

Technical Field

The utility model relates to a kirschner wire positioning guider belongs to the medical instrument field.

Background

The kirschner wire fixation has the advantages of small wound and sustainable fixing force, and is widely applied to bone traction, fracture fixation and other orthopedic operations. However, during the operation of driving the kirschner wire, only the needle insertion point can be determined, the doctor cannot accurately control the needle extraction point and the driving angle, and whether the kirschner wire is driven according to the preset scheme directly influences the healing effect and the postoperative recovery effect, so that the operation has higher requirements on the clinical experience of the doctor, if the clinical experience of the doctor is less, the repeated needle insertion operation is likely to be carried out for many times, the repeated operation can increase the wound on one hand, and the operation time is prolonged, thereby bringing pain to the patient.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the Kirschner wire positioning guider overcomes the defects in the prior art, defines the needle outlet position, ensures the accuracy of the needle inserting angle, and can reduce the dependence of the Kirschner wire operation on the clinical experience of doctors.

The Kirschner wire positioning guider comprises a fixed arm, a movable arm and a locking mechanism; the movable arm is assembled on the transverse rod part at the upper part of the fixed arm through the guide channel and can move along the transverse rod part; a locking mechanism for locking the movable arm to move towards one side far away from the fixed arm is arranged corresponding to the movable arm; the lower part of the movable arm is provided with a guide sleeve, the aperture of a central hole of the guide sleeve is matched with the outer diameter of the Kirschner wire, and the tail end of the fixed arm is provided with a positioning groove which is just opposite to the central hole of the guide sleeve.

The kirschner wire positioning guider can be used for femoral condyle traction, tibial tubercle traction, calcaneus traction, patella fracture fixation, calcaneus fracture fixation, femoral condyle fracture and tibial posterior condyle fracture hollow nail fixation preset needles and other operations. During operation, according to the size of an operation part, the size of an opening of the Kirschner wire positioning guide is adjusted (the movable arm is pulled to adjust the size of the opening between the fixed arm and the movable arm, the movable arm is locked through the locking mechanism after the adjustment is finished), then the Kirschner wire positioning guide is placed on the operation part, the fixed arm is placed at a needle outlet position of a preset scheme, the movable arm is adjusted to reach a preset needle inlet position, the angle of the movable arm is corrected according to the preset needle inlet angle, then the Kirschner wire is inserted into the operation part along the central hole of the guide sleeve, the Kirschner wire penetrates through the preset needle inlet position and penetrates out of the positioning groove at the tail end of the fixed arm to complete the needle inlet of the Kirschner wire, after the needle inlet operation is completed, the fixed arm is pulled out from the front end of the Kirschne.

According to the above, the kirschner wire location director uses very conveniently, swiftly, through ensureing the angle of inserting the needle, clearly establishes the position of going out the needle, can insert according to the scheme of predetermineeing to can effectively prevent because of inserting the needle angle and go out the not clear many times of repeated needle inserting problem that causes of position, reduce the reliance to doctor's experience.

Preferably, the lower part of the movable arm is provided with a transverse fixing hole; the guide sleeve is arranged in the transverse fixing hole and is positioned by a limiting screw. Through this structural design, be convenient for change guide sleeve, when in actual use, can be equipped with the different guide sleeve in a plurality of centre bore apertures according to the operation needs to the outer diameter size of ke shi needle changes centre bore aperture assorted guide sleeve in according to the operation. Further preferably, the periphery of the guide sleeve is provided with a limiting groove corresponding to the limiting screw, the movable arm corresponding to the limiting screw is provided with a threaded hole communicated with the transverse fixing hole, and the limiting screw is clamped into the limiting groove through the threaded hole to realize the positioning of the guide sleeve.

Preferably, the length of the guide sleeve is 20mm to 60mm, so that the needle inserting angle can be ensured to be stable when the Kirschner wire is driven.

Preferably, the locking mechanism comprises a locking piece, a reed and a plurality of teeth which are arranged on the cross rod part and correspond to the locking piece; the locking sheet is connected to the movable arm through a hinge shaft, and a notch communicated with the guide channel is formed in the movable arm corresponding to the locking sheet; one end of the reed is fixedly connected with the movable arm, and the other end of the reed is abutted against the locking piece; under the natural state, the locking plate front end passes breach, fall into on the tooth of horizontal pole part, and under the reed effect, the fixed arm is the locking state, and when external force acted on locking plate rear end, the tooth on locking plate front end and the horizontal pole part breaks away from, and the fixed arm is the adjustable state of activity. According to the structural description, the size of the opening between the fixed arm and the movable arm can be adjusted by pressing the rear end of the locking piece and pulling the movable arm, and the whole operation is simple, convenient and quick. In practical application, the size of the opening of the Kirschner wire positioning guide can be flexibly adjusted according to the size of the operation position.

Preferably, the positioning groove is a U-shaped groove with a downward opening, and is suitable for Kirschner wires with various diameters.

In addition, the Kirschner wire positioning guider can meet the requirement of operation precision by using high polymer materials such as carbon fiber, PPSU (polypropylene random phase) and PEEK (polyetheretherketone) besides medical stainless steel during material selection, and simultaneously can reduce the weight and reduce the precision error caused by the self weight of the stainless steel.

Compared with the prior art, the utility model beneficial effect who has is:

when kirschner wire location director is applied to bone traction, bone fracture fixation etc. bone surgery, can ensure the needle insertion angle, make clear out the needle position, consequently can insert the needle according to the scheme of predetermineeing to can effectively prevent because of inserting the needle angle and go out the not clear many times of repeated needle insertion problem that causes of needle position, whole convenient operation, swift has reduced and has beaten the reliance of kirschner wire operation to doctor clinical experience.

Drawings

Fig. 1 is a perspective view of the present invention;

fig. 2 is a schematic structural diagram of the present invention;

fig. 3 is a partial view of fig. 2 from direction a.

In the figure: 1. a movable arm; 2. a fixed arm; 3. teeth; 4. positioning a groove; 5. a central bore; 6. a guide sleeve; 7. a threaded hole; 8. a locking piece; 9. a reed; 10. a limiting groove; 11. a limit screw; 12. fixing the bolt; 13. hinging a shaft; 14. and (4) a notch.

Detailed Description

Embodiments of the present invention are further described below with reference to the accompanying drawings:

example (b):

as shown in fig. 1 to 3, the kirschner wire positioning guider comprises a fixed arm 2, a movable arm 1 and a locking mechanism; a guide channel (the section of the guide channel is square in the embodiment) is arranged at the upper part of the movable arm 1 corresponding to the fixed arm 2, and the movable arm 1 is assembled at the cross bar part at the upper part of the fixed arm 2 through the guide channel and can move along the cross bar part; a locking mechanism for locking the movable arm 1 to move towards one side far away from the fixed arm 2 is arranged corresponding to the movable arm; the lower part of the movable arm 1 is provided with a guide sleeve 6, the aperture of a central hole 5 of the guide sleeve 6 is matched with the outer diameter of the Kirschner wire, the tail end of the fixed arm 2 is provided with a positioning groove 4, the positioning groove 4 is just opposite to the central hole 5 of the guide sleeve 6, and the positioning groove 4 in the embodiment is a U-shaped groove with a downward opening.

The lower part of the movable arm 1 is provided with a transverse fixing hole; the guide sleeve 6 is arranged in the transverse fixing hole; the periphery of guide sleeve 6 is equipped with the spacing groove 10 corresponding with stop screw 11, corresponds stop screw 11 and sets up the communicating screw hole 7 with horizontal fixed orifices on digging arm 1, and stop screw 11 blocks in spacing groove 10 through screw hole 7, realizes the location to guide sleeve 6 to fix a position through stop screw 11. Through this structural design, be convenient for change guide sleeve 6, when in actual use, can be equipped with the different guide sleeve 6 in 5 apertures of a plurality of centre bores according to the operation needs to change 5 aperture assorted guide sleeve 6 in the centre bore according to the external diameter size of ke shi needle in the operation.

In order to ensure stable needle insertion angle during driving of the kirschner wire, the length of the guide sleeve 6 selected in the embodiment is 47 mm.

The locking mechanism comprises a locking piece 8, a reed 9 and a plurality of teeth 3 which are arranged on the cross rod part and correspond to the locking piece 8; the locking piece 8 is connected to the movable arm 1 through a hinge shaft 13 (in this embodiment, a pin shaft is used), and a notch 14 communicated with the guide channel is formed in the movable arm 1 corresponding to the locking piece 8; one end of the reed 9 is fixedly connected with the movable arm 1 through a fixed bolt 12, and the other end of the reed is propped against the locking sheet 8; under the natural state, 8 front ends of locking plate pass breach 14, fall into on the tooth 3 of horizontal pole part, and under the reed 9 effect, fixed arm 2 is the locking state, and when external force acted on 8 rear ends of locking plate, 8 front ends of locking plate broke away from with tooth 3 on the horizontal pole part, and fixed arm 2 is the adjustable state of activity. The opening size between the fixed arm 2 and the movable arm 1 can be adjusted by pressing the rear end of the locking piece 8 and pulling the movable arm 1, and the whole operation is simple, convenient and quick. In practical application, the size of the opening of the Kirschner wire positioning guide can be flexibly adjusted according to the size of the operation position.

The embodiment can be used for operations such as femoral condyle traction, tibial tubercle traction, calcaneal traction, patellar fracture fixation, calcaneal fracture fixation, femoral condyle fracture, tibial posterior condyle fracture hollow nail fixation preset needle and the like. In the fracture fixation or bone traction operation, the operation of the kirschner wire positioning guider is as follows:

1. selecting a guide sleeve 6 with a proper hole diameter of a central hole 5 according to the diameter of the kirschner wire for operation, installing the guide sleeve 6 in a fixed hole of the movable arm 1, and positioning the guide sleeve by a limiting screw 11;

2. according to the size of the operation part, the size of the opening of the Kirschner wire positioning guide is adjusted (the locking piece 8 is pressed down to pull the movable arm 1 to adjust the size of the opening between the fixed arm 2 and the movable arm 1);

3. placing the kirschner wire positioning guider at the operation position;

4. the fixed arm 2 is placed at a needle outlet position of a preset scheme, and then the movable arm 1 is pushed inwards (namely towards one side of the fixed arm 2) to reach a preset needle inlet position;

5. correcting the angle of the movable arm 1 according to a preset needle inserting angle;

6. the Kirschner wire is inserted into a central hole 5 of a guide sleeve 6, continuously driven into an operation position through a preset needle inserting position, and then penetrates out of a U-shaped groove at the tail end of a fixed arm 2 to finish the Kirschner wire needle inserting;

7. after the needle inserting operation is finished, the locking piece 8 is pressed down, the fixed arm 2 is drawn out from the front end of the Kirschner wire, the movable arm 1 is drawn out from the tail end of the Kirschner wire, and the whole operation is finished.

This embodiment the ke shi needle location director except that available medical stainless steel when the selection material, polymer materials such as carbon fiber, PPSU, PEEK also can satisfy the requirement of operation precision, can lighten weight simultaneously, reduces the precision error that the stainless steel dead weight brought.

Claims (6)

1. The utility model provides a kirschner wire positioning guide which characterized in that: comprises a fixed arm (2), a movable arm (1) and a locking mechanism;

a guide channel is arranged at the upper part of the movable arm (1) corresponding to the fixed arm (2), and the movable arm (1) is assembled at the cross bar part at the upper part of the fixed arm (2) through the guide channel and can move along the cross bar part; a locking mechanism for locking the movable arm (1) to move towards one side far away from the fixed arm (2) is arranged corresponding to the movable arm;

a guide sleeve (6) is installed on the lower portion of the movable arm (1), the aperture of a center hole (5) of the guide sleeve (6) is matched with the outer diameter of the Kirschner wire, a positioning groove (4) is formed in the tail end of the fixed arm (2), and the positioning groove (4) is right opposite to the center hole (5) of the guide sleeve (6).

2. The k-wire positioning guide of claim 1, wherein: the lower part of the movable arm (1) is provided with a transverse fixing hole; the guide sleeve (6) is arranged in the transverse fixing hole and is positioned by a limiting screw (11).

3. The k-wire positioning guide of claim 2, wherein: the periphery of the guide sleeve (6) is provided with a limiting groove (10) corresponding to the limiting screw (11), a threaded hole (7) communicated with the transverse fixing hole is formed in the movable arm (1) corresponding to the limiting screw (11), and the limiting screw (11) is clamped into the limiting groove (10) through the threaded hole (7) to achieve positioning of the guide sleeve (6).

4. The K-wire positioning guide of any one of claims 1 to 3, wherein: the length of the guide sleeve (6) is 20 mm-60 mm.

5. The K-wire positioning guide of any one of claims 1 to 3, wherein: the locking mechanism comprises a locking piece (8), a reed (9) and a plurality of teeth (3) which are arranged on the cross rod part and correspond to the locking piece (8); the locking sheet (8) is connected to the movable arm (1) through a hinge shaft (13), and a notch (14) communicated with the guide channel is formed in the movable arm (1) corresponding to the locking sheet (8); one end of the reed (9) is fixedly connected with the movable arm (1), and the other end of the reed is propped against the locking sheet (8); under the natural state, lock plate (8) front end passes breach (14), fall into horizontal pole partial tooth (3) on, fixed arm (2) are the locking state, and when external force acted on lock plate (8) rear end, lock plate (8) front end broke away from with horizontal pole partial tooth (3), and fixed arm (2) are the adjustable state of activity.

6. The K-wire positioning guide of any one of claims 1 to 3, wherein: the positioning groove (4) is a U-shaped groove with a downward opening.

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