CN219207170U

CN219207170U - Single-side toothed fracture reduction forceps capable of combining nail-placing sleeve

Info

Publication number: CN219207170U
Application number: CN202223202774.1U
Authority: CN
Inventors: 郭振国; 陈奇鸣; 李澜萱; 景凯
Original assignee: Huizhou Central People's Hospital
Current assignee: Huizhou Central People's Hospital
Priority date: 2022-12-01
Filing date: 2022-12-01
Publication date: 2023-06-20
Anticipated expiration: 2032-12-01

Abstract

The utility model discloses a single-sided toothed fracture reduction forceps with a combinable nail-placing sleeve, relates to the technical field of orthopedic medical instruments, and particularly relates to a single-sided toothed fracture reduction forceps with a combinable nail-placing sleeve, which comprises a first rotating arm and a second rotating arm. In the metacarpal fracture operation process, a doctor holds a first rotating arm and a second rotating arm which are in cross hinge, inserts the circular arc at the end part of the second rotating arm below the shifted bone block, and cooperates with a sleeve in threaded connection with the first rotating arm to clamp the shifted bone block and the bone block at the normal position together, so that the shifted bone block is reset. After the reduction, the Kirschner wire is guided to be placed in the needle direction through the sleeve, so that the Kirschner wire can be simultaneously inserted into the shifted bone block and the bone block at the normal position from the accurate position and the angle, and the effects of facilitating bone block reduction and guiding the Kirschner wire to be placed in the needle are achieved. The technical scheme is mainly used for the upper and lower displacement reduction and fixation operation of the metacarpal fracture, and solves the problem of inaccurate needle placement position when the Kirschner wire is placed into a fracture block.

Description

Single-side toothed fracture reduction forceps capable of combining nail-placing sleeve

Technical Field

The utility model relates to the technical field of orthopedic medical instruments, in particular to a single-side toothed fracture reduction forceps capable of combining a nail-placing sleeve.

Background

Clinically when carrying out the operation to patient that metacarpal fracture shifted, often will be with patient's dorsum up, cut patient's skin downwards from the dorsum, separate soft tissue, expose fracture department, when patient's bone shift direction is the left and right sides of palm, paste miniature metacarpal steel sheet on the bone piece that is in normal position, use large-scale straight hemostatic forceps to clip the bone piece that shifts with miniature metacarpal steel sheet simultaneously, the gradual application of force presss from both sides tightly to restore to the throne the bone piece that shifts. The micro-power electric drill is used for driving the Kirschner wire to pass through the screw hole on the micro metacarpal steel plate, so that the displaced bone block and the bone block at the normal position are inserted at the same time, and the displaced bone block is fixed. The Kirschner wire is a common internal fixing material for orthopaedics, is used for fixing short and small fracture or avulsion fracture and other fracture fixation with low stress, and is also used for fixing temporary fracture blocks in orthopaedics operation. At present, when the Kirschner wire is used clinically to be placed into a human body, a series of problems such as inaccurate needle placement position, offset needle placement position, unsatisfactory fixing effect and the like occur. And the bone pieces at the fracture of part of the patients are shifted to the upper side and the lower side of the palm, and because the space between the adjacent metacarpals is smaller, the operation space is limited, and the hemostatic forceps are inconvenient to clamp the bone pieces at the upper side and the lower side for resetting, so that great trouble is brought to doctors and patients.

Disclosure of Invention

The utility model aims to provide a single-side toothed fracture reduction forceps capable of combining a nail-placing sleeve, which solves the problem of inaccurate needle placement position when a Kirschner wire is placed into a fracture block.

The technical aim of the utility model is realized by the following technical scheme: the utility model provides a but combination is put nail sleeve unilateral dentiform fracture reduction forceps, includes first rotating arm, second rotating arm, first rotating arm is X type cross hinge with the second rotating arm, the one end integrated into one piece of first rotating arm has the lantern ring, the inner screw thread connection of lantern ring has the sleeve, the other end fixedly connected with first ring of first rotating arm, the one end integrated into one piece of second rotating arm has the circular arc, the tip of circular arc is sharpened and is handled, the other end fixedly connected with second ring of second rotating arm, the axis of lantern ring is perpendicular with the tangent line of circular arc center department when the sleeve presss from both sides the metacarpal bone jointly with the circular arc.

The principle and effect of the technical scheme are as follows: the miniature metacarpal steel plate is attached to the upper side of a metacarpal bone at a normal position, and a doctor holds the first finger ring and the second finger ring to pierce the metacarpal bone of a patient with metacarpal bone fracture tightly at the tip of an arc, so that the arc hooks the shifted bone pieces from the lower side of the metacarpal bone. The doctor drives the first finger ring to approach the second finger ring, thereby driving the circular arc to approach the sleeve. The sleeve is opposite to the screw hole on the miniature metacarpal steel plate, the sleeve is abutted against the miniature metacarpal steel plate, and the circular arc drives the shifted bone block to be close to the bone block at the normal position, so that the reset of the shifted bone block is completed. After the replacement of the bone block is completed, the Kirschner wire is inserted into the sleeve, the Kirschner wire can be accurately inserted into the screw hole of the miniature metacarpal steel plate from a proper angle and position through the guide of the sleeve, and the micro-power electric drill is used for driving the Kirschner wire to pass through the bone fracture lines of the replacement bone block and the bone block at the normal position, so that the two bone blocks are fixed together. The clamping points of the sleeve and the bone blocks can be adjusted through threaded fit of the sleeve and the lantern ring, so that the insertion position and angle of the Kirschner wire can be adjusted, and the effects of resetting the bone blocks which are shifted up and down and guiding the Kirschner wire to be accurately placed into the fracture blocks can be achieved.

The utility model is further characterized in that one end of the second rotating arm, which is close to the second finger ring, is provided with a rectangular groove, the rectangular groove is rotationally connected with an arc-shaped rack, one end of the first rotating arm, which is close to the first finger ring, is provided with an arc-shaped through hole for sliding the arc-shaped rack, the first rotating arm and the second rotating arm are jointly provided with a limiting piece, and the limiting piece is used for mutually fixing the arc-shaped rack and the first rotating arm.

Through adopting above-mentioned technical scheme, when circular arc and sleeve are with the bone piece of shifting and the bone piece mutual butt of normal position when tight together, fix arc rack and first rotation arm each other through the locating part. Thereby fixing the first rotating arm and the second rotating arm to each other, so that the circular arc and the sleeve are mutually fixed, and further the shifted bone block and the bone block at the normal position are temporarily fixed together. The effect that the first finger ring and the second finger ring can be fixed temporarily and the bone blocks can be shifted without continuously holding the first finger ring and the second finger ring by a doctor is achieved, and the doctor can perform subsequent operation conveniently.

The utility model is further characterized in that the limiting piece is a torsion spring, the center of the torsion spring coincides with the rotation point of the arc-shaped rack, two ends of the torsion spring are fixedly connected with the rectangular groove and the arc-shaped rack respectively, limiting teeth are fixedly connected in the arc-shaped through hole, and the limiting teeth are inserted into tooth grooves of the arc-shaped rack.

By adopting the technical scheme, in the initial state, the thumb of the doctor is inserted into the second finger ring, and the middle finger is inserted into the first finger ring. In the process that the first finger ring and the second finger ring are close to each other, the arc-shaped rack positively moves to pass through the arc-shaped through hole. Under the combined action of the torsion spring and the rectangular groove, the limiting teeth are always inserted into tooth grooves of the arc-shaped racks, so that the arc-shaped racks are prevented from moving reversely, the first finger ring is prevented from being far away from the second finger ring, and the effect of temporarily fixing and shifting bone blocks is achieved. When the clamping of the shifting bone block is required to be canceled, the index finger of the doctor drives the arc-shaped rack to move to one side of the first finger ring, so that the arc-shaped rack is driven to be separated from the limiting teeth, and the first finger ring and the second finger ring can be mutually far away or close to each other, so that the effect of conveniently canceling the temporary fixation of the shifting bone block is achieved.

The utility model further provides that one end of the first rotating arm close to the first finger ring and one end of the second rotating arm close to the second finger ring are fixedly connected with a spring together.

Through adopting above-mentioned technical scheme, when first ring is close to the second ring, the spring is compressed, and when the withdrawal is fixed between arc rack and the first rotation arm, the spring drives first ring and keeps away from the second ring, need not the doctor and manually drives first ring and keep away from the second ring, thereby reaches and drives first ring automatically and keep away from the second ring and drive the circular arc and keep away from telescopic effect.

The utility model further provides that one end of the first rotating arm, which is close to the first finger ring, is provided with a concave part.

By adopting the technical scheme, the middle finger is lapped in the concave part in the operation process of the doctor, so that the doctor can hold the whole device more stably.

In summary, the utility model has the following beneficial effects: the effect of not only resetting the bone block which moves up and down, but also guiding the Kirschner wire to be accurately placed into the fracture block is achieved. And the operation can be performed by only one hand, and the method is simple and convenient.

Drawings

FIG. 1 is a front view of an embodiment;

FIG. 2 is a cross-sectional view of an embodiment;

fig. 3 is an enlarged view at a in fig. 2.

In the figure: the device comprises a first rotating arm 1, a second rotating arm 2, a lantern ring 3, a sleeve 4, a first finger ring 5, an arc 6, a second finger ring 7, a rectangular groove 8, an arc-shaped rack 9, an arc-shaped through hole 10, a torsion spring 11, a limiting tooth 12, a spring 13, a concave part 14, an anti-slip tooth 15 and a fixed shaft 16.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

The utility model provides a can make up nail sleeve unilateral dentiform fracture reduction forceps, as shown in fig. 1-3, including first rotating arm 1, second rotating arm 2, first rotating arm 1 is X alternately articulated with second rotating arm 2, and the upper end integrated into one piece of first rotating arm 1 has lantern ring 3, is equipped with the internal thread in the lantern ring 3, and lantern ring 3 internal thread is connected with sleeve 4. The lower end of the first rotating arm 1 is fixedly connected with a first finger ring 5. The upper end integrated into one piece of second rotating arm 2 has circular arc 6, and the upper end of circular arc 6 is sharpened and is handled, and the right side of circular arc 6 is equipped with anti-skidding tooth 15 along the arc length direction. The lower end of the second rotating arm 2 is fixedly connected with a second finger ring 7, and the axis of the lantern ring 3 is perpendicular to a tangent line at the center of the circular arc 6 when the sleeve 4 and the circular arc 6 clamp the metacarpal together. The lower end of the second rotating arm 2 is provided with a rectangular groove 8, and the opening of the rectangular groove 8 is leftwards. The rectangular groove 8 is internally and fixedly connected with a fixed shaft 16, the fixed shaft 16 is rotationally connected with an arc-shaped rack 9, and the arc-shaped center position of the arc-shaped rack 9 coincides with a hinge point between the first rotating arm 1 and the second rotating arm 2. The lower extreme of first rotating arm 1 has offered the gliding arc through-hole 10 of confession arc rack 9, and first rotating arm 1 is equipped with the locating part jointly with second rotating arm 2, and the locating part is used for fixing each other between arc rack 9 and the first rotating arm 1. The limiting piece is a torsion spring 11, the torsion spring 11 is sleeved on the fixed shaft 16, and two ends of the torsion spring 11 are fixedly connected with the rectangular groove 8 and the arc-shaped rack 9 respectively. Limiting teeth 12 are fixedly connected in the arc-shaped through holes 10, and the limiting teeth 12 are inserted into tooth grooves of the arc-shaped racks 9. The lower end of the first rotating arm 1 and the lower end of the second rotating arm 2 are fixedly connected with a spring 13. The lower extreme of first swing arm 1 is equipped with depressed part 14, and depressed part 14 is located the upside of arc rack 9, and the depressed part 14 inwards is the arc.

Working principle: when a doctor performs an operation on a patient with metacarpal fracture, a miniature metacarpal steel plate is attached to the upper side of metacarpal at a normal position, a thumb is inserted into the second finger ring 7, a middle finger is inserted into the first finger ring 5, and an index finger is put into the concave part 14. The tip of the arc 6 is stuck to the metacarpal bone of a patient suffering from metacarpal bone fracture to be penetrated, and the arc 6 hooks the displaced bone pieces from the lower side of the metacarpal bone. The doctor drives the first finger ring 5 to approach the second finger ring 7, thereby driving the arc 6 to approach the sleeve 4. The sleeve 4 is opposite to the screw hole on the miniature metacarpal steel plate, thereby abutting against the bone block at the normal position of the fracture of the patient. The circular arc 6 drives the shifted bone block to approach the bone block at the normal position, thereby completing the reduction of the shifted bone block. After the replacement of the bone block is completed, the Kirschner wire is inserted into the sleeve 4, the Kirschner wire can be accurately inserted into the screw hole of the miniature metacarpal steel plate from a proper angle and position through the guide of the sleeve 4, and the micro-power electric drill is used for driving the Kirschner wire to pass through the bone fracture lines of the shifted bone block and the bone block at the normal position, so that the two bone blocks are fixed together. The clamping point of the sleeve 4 and the bone block can be adjusted through the threaded fit of the sleeve 4 and the lantern ring 3, so that the insertion position and angle of the Kirschner wire can be adjusted. When the arc 6 and the sleeve 4 together tightly support the shifted bone block and the bone block at the normal position, the arc-shaped rack 9 positively moves through the arc-shaped through hole 10 when the first finger ring 5 and the second finger ring 7 are close to each other. Under the combined action of the torsion spring 11 and the rectangular groove 8, the limiting teeth 12 are always inserted into tooth grooves of the arc-shaped racks 9, so that the arc-shaped racks 9 are prevented from moving reversely, the first finger ring 5 is prevented from being far away from the second finger ring 7, and the shifted bone blocks and the bone blocks at the normal positions are temporarily fixed together. When the clamping of the shifting bone block is required to be canceled, the index finger of the doctor downwards dials the arc-shaped rack 9, so that the arc-shaped rack 9 is driven to be separated from the limiting teeth 12, and the first finger ring 5 and the second finger ring 7 can be mutually far away or close to each other. When the first finger 5 approaches the second finger 7, the spring 13 is compressed. After the arc-shaped rack 9 is fixed with the first rotating arm 1, the spring 13 drives the first finger ring 5 to be far away from the second finger ring 7, a doctor does not need to manually drive the first finger ring 5 to be far away from the second finger ring 7, and the operation of the doctor is facilitated.

The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and modifications to the present embodiment, which may not creatively contribute to the present utility model as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present utility model.

Claims

1. The utility model provides a can make up put nail sleeve unilateral dentiform fracture reduction forceps, includes first swing arm (1), second swing arm (2), its characterized in that: the palm bone clamping device is characterized in that the first rotating arm (1) is in X-shaped cross hinge with the second rotating arm (2), a lantern ring (3) is integrally formed at one end of the first rotating arm (1), a sleeve (4) is connected with the lantern ring (3) in an internal thread manner, a first finger ring (5) is fixedly connected to the other end of the first rotating arm (1), an arc (6) is integrally formed at one end of the second rotating arm (2), the end of the arc (6) is subjected to sharpening treatment, a second finger ring (7) is fixedly connected to the other end of the second rotating arm (2), and the axis of the lantern ring (3) is perpendicular to a tangent line at the center of the arc (6) when the palm bone is clamped by the sleeve (4) and the arc (6) together;

rectangular grooves (8) are formed in one end, close to the second finger ring (7), of the second rotating arm (2), arc racks (9) are connected in the rectangular grooves (8) in a rotating mode, arc through holes (10) for enabling the arc racks (9) to slide are formed in one end, close to the first finger ring (5), of the first rotating arm (1), limiting pieces are arranged on the first rotating arm (1) and the second rotating arm (2) together, and the limiting pieces are used for fixing the arc racks (9) and the first rotating arm (1) to each other.

2. A single-sided toothed fracture reduction forceps of a combinable nail-setting sleeve as claimed in claim 1, wherein: the limiting piece is a torsion spring (11), the center of the torsion spring (11) coincides with the rotation point of the arc-shaped rack (9), two ends of the torsion spring (11) are fixedly connected with the rectangular groove (8) and the arc-shaped rack (9) respectively, limiting teeth (12) are fixedly connected in the arc-shaped through hole (10), and the limiting teeth (12) are inserted into tooth grooves of the arc-shaped rack (9).

3. A single-sided toothed fracture reduction forceps of a combinable nail-setting sleeve as claimed in claim 1, wherein: and a spring (13) is fixedly connected with one end of the first rotating arm (1) close to the first finger ring (5) and one end of the second rotating arm (2) close to the second finger ring (7) together.

4. A single-sided toothed fracture reduction forceps of a combinable nail-setting sleeve as claimed in claim 1, wherein: one end of the first rotating arm (1) close to the first finger ring (5) is provided with a concave part (14).