CN211066985U - Kirschner wire positioning device for patella reduction operation - Google Patents
Kirschner wire positioning device for patella reduction operation Download PDFInfo
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- CN211066985U CN211066985U CN201922040131.3U CN201922040131U CN211066985U CN 211066985 U CN211066985 U CN 211066985U CN 201922040131 U CN201922040131 U CN 201922040131U CN 211066985 U CN211066985 U CN 211066985U
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Abstract
The utility model belongs to the technical field of medical instrument, specifically be a ke shi needle positioner for patella operation. Comprises a main positioning rod, an auxiliary positioning rod and a fixed claw; the main positioning rod is transversely arranged on the patella; the auxiliary positioning rods are arranged on the main positioning rod and can slide back and forth along the main positioning rod and position, and the two auxiliary positioning rods are positioned on the two sides of the patella; the fixed claw is arranged on the auxiliary positioning rod, the claw body is vertically arranged, the top end of the claw body is connected with the auxiliary positioning rod in a sliding mode, and the claw body can slide back and forth along the length direction of the auxiliary positioning rod; the fixing claw can clamp the patella by adjusting the distance between the two auxiliary positioning rods and the position of the fixing claw on the auxiliary positioning rods; the fixed claw is provided with a plurality of positioning holes for the kirschner wire to pass through. The utility model discloses simple structure can accurate effectual fixed patella, guarantees the operation effect.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, concretely relates to ke shi needle positioner for patella operation that resets.
Background
At present, the patella fracture surgery methods are various, but the clinical application is most classical and most extensive, namely the fixation of a kirschner wire/hollow nail + a tension band. When the reduction is performed during the operation, two tissue clamps are generally used for temporary fixation, then the kirschner wire is driven into the tissue clamp according to the experience of an operator, and the hollow screw with the corresponding length is screwed along the kirschner wire after the position is confirmed to be satisfactory through fluoroscopy, so that the steel wire, the titanium cable and the like are further fixed. The disadvantages are that:
1. the tissue clamp is a non-special instrument, the tip end of the tissue clamp is thin, and the tissue clamp is easy to bend or even break when in pressure resetting;
2. the force is difficult to control when the pressure is applied, and fracture and displacement of fracture blocks can occur when the pressure is too tight;
3. when the Kirschner wire is driven in, direction deviation (unparallel to a patella joint surface, too deep or too shallow distance from the joint surface and too close distance from a patella edge) easily occurs, and the direction needs to be adjusted under the repeated perspective of a C-arm machine to reach an ideal position; excessive fluoroscopy prolongs the operation time, increases the operation risk, and also causes radiation injury to the patient and the doctor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a simple structure, effectual ke shi needle positioner that is used for patella operation that resets of location.
The Kirschner wire positioning device for patella reduction surgery provided by the utility model comprises a main positioning rod, an auxiliary positioning rod and a fixed claw;
the main positioning rod is arranged on the knee (patella);
the two auxiliary positioning rods are arranged on the main positioning rod, at least one slidable auxiliary positioning rod can slide back and forth along the length direction of the main positioning rod and can be positioned, namely, the distance between the two auxiliary positioning rods is adjustable, and the two auxiliary positioning rods are positioned on two sides of the fractured patella;
the fixed claw is arranged on the auxiliary positioning rod, the claw body is vertically arranged, the top end of the claw body is connected with the auxiliary positioning rod in a sliding mode, and the claw body can slide back and forth along the length direction of the auxiliary positioning rod; wherein, a plurality of positioning holes for the penetration of the Kirschner wire are arranged on the fixing claw on at least one auxiliary positioning rod;
the fixing claw can be clamped and fixed on the fractured patella by adjusting the distance between the two auxiliary positioning rods and the position of the fixing claw on the auxiliary positioning rods, and the position of the Kirschner wire penetrating into the patella through the positioning hole can be limited.
In the utility model, the main positioning rod is a cylinder, and the surface of the rod body is provided with an external thread; the slidable auxiliary positioning rod is provided with a hanging ring which is sleeved on the rod body of the main positioning rod and can slide on the main positioning rod;
a positioning ring is arranged at the end part of the main positioning rod and outside the hanging ring and is used as a positioning device of the slidable auxiliary positioning rod, the positioning ring is provided with an internal thread matched with the external thread of the main positioning rod, and the positioning ring can be propped against the outer side surface of the slidable auxiliary positioning rod; namely, after the slidable auxiliary positioning rod is hung from one end of the main positioning rod, the positioning ring is screwed on the end of the main positioning rod, so that the slidable auxiliary positioning rod cannot fall off from the end part of the main positioning rod; along with the positioning ring is screwed into the middle of the main positioning rod, the distance between the two auxiliary positioning rods is continuously reduced.
In the utility model, the fixed claw is provided with a positioning tube which passes through the positioning hole, and the kirschner wire passes through the positioning tube; this further enhances the stability of the insertion of the k-wire.
In the utility model, two auxiliary positioning rods are provided, two groups of corresponding fixing claws are provided, when one group of fixing claws is provided with positioning holes, the other group of fixing claws is provided with a through hollow area opposite to the positioning holes, and the hollow area can prevent the kirschner wire which is penetrated from the positioning holes through the patella from touching the fixing claws; therefore, the fixing claws do not need to be avoided in an accurate corresponding mode, and the convenience of operation is improved.
In the utility model, the fixing claws are arc-shaped rods which are matched with the arc shape of the side surface of the patella, so that the ends of the claws can clamp the patella conveniently; the top end of the auxiliary positioning rod is provided with a second hanging ring which is hung on the auxiliary positioning rod through the second hanging ring and can slide.
The utility model discloses in, every the stationary dog on the vice locating lever has two.
The utility model discloses in, the cylinder both sides of main locating lever are equipped with the tangent plane, and the scale has been marked on the tangent plane.
The utility model discloses in, the auxiliary positioning pole superscript has the scale.
When the utility model is used, the knee joint on the affected side is slightly bent, the skin and the subcutaneous tissue in front of the knee joint of the affected limb are incised in an operation, the broken end of the patella is exposed, the broken end is cleaned and reset, and then the main positioning rod is horizontally and longitudinally arranged on the upper pole and the lower pole of the patella, namely along the longitudinal axis direction of the lower limb; rotating the positioning ring to enable the positioning ring to be tightly attached to the hanging ring of the auxiliary positioning rod, pushing the auxiliary positioning rod inwards (towards the patella), adjusting the position of the fixing claw on the auxiliary positioning rod, enabling the fixing claw to be tightly clamped around the reset patella, enabling the whole positioning device and the patella to be relatively fixed in position, and then selecting a proper positioning tube position to drill into the Kirschner wire at an ideal position; therefore, when the Kirschner wire is drilled into the fractured patella through the positioning tube to be temporarily fixed, the Kirschner wire can be accurately drilled into the set position without deviation.
The utility model discloses simple structure can accurate effectual fixed patella, has strengthened operation convenience and efficiency, guarantees the operation effect.
Drawings
Fig. 1 is a structural diagram of the front view of the utility model, and the observation position is located on the side of the leg of the person.
Fig. 2 is a side view structural diagram of the present invention, wherein the observation position is located at the position of the shank of the human leg facing the direction of the thigh.
Fig. 3 is a perspective view structural illustration of the present invention.
Reference numbers in the figures: the device comprises a main positioning rod 1, an auxiliary positioning rod 2, a fixing claw 3, a positioning hole 4, a circular ring-shaped hanging ring 5, a positioning ring 6, a second hanging ring 7 and a hollow area 8.
Detailed Description
The utility model comprises a main locating rod 1, an auxiliary locating rod 2 and a fixed claw 3, which are made of medical stainless steel or aluminum alloy.
The main positioning rod 1 is a cylinder with a tangent plane arranged on the front side surface and the rear side surface, the tangent plane is rectangular, and the tangent plane is marked with scale scales; and external threads are arranged on the reserved upper and lower arc cylindrical surfaces.
Two auxiliary positioning rods 2 are rectangular and provided with scale marks; one as a fixed secondary positioning rod 2 and one as a movable secondary positioning rod 2;
an integrally formed hanging ring is arranged above the middle of the auxiliary positioning rod 2, the inner diameter of the hanging ring is matched with the outer diameter of the main positioning rod 1, the hanging ring is arranged on the main positioning rod 1, and the two auxiliary positioning rods 2 are arranged in parallel and horizontally; the movable auxiliary positioning rod 2 can slide back and forth on the thread along the length direction of the main positioning rod 1 through a hanging ring and is positioned; the hanging ring of the fixed auxiliary positioning rod 2 is fixedly welded at one end part of the main positioning rod 1. As shown in fig. 3.
At the other end of the main positioning rod 1, a movable hanging ring of an auxiliary positioning rod 2 is a circular hanging ring 5, a positioning ring 6 is arranged on the outer side of the circular hanging ring 5, the positioning ring 6 is made of aluminum alloy and serves as a positioning device of the movable auxiliary positioning rod 2, the positioning ring 6 is cylindrical, an internal thread matched with the external thread of the main positioning rod 1 is arranged in the positioning ring 6, and the positioning ring 6 is screwed in from the other end of the main positioning rod 1 and can be abutted against the outer side face of the circular hanging ring 5 of the first auxiliary positioning rod; namely, after the movable auxiliary positioning rod 2 is hung on the main positioning rod 1, the positioning ring 6 is screwed on the other end of the main positioning rod 1, so that the movable auxiliary positioning rod 2 cannot fall off from the main positioning rod 1; the positioning ring 6 is provided with concave-convex linear stripes on the surface, the concave-convex linear stripes are parallel to the direction of the central axis of the positioning ring 6, and the friction of twisting fingers is increased. As shown in fig. 3.
The fixed claws 3 are cast by aluminum alloy, and are 4, two of the fixed claws are in a group and are respectively arranged on the two auxiliary positioning rods 2; the fixed claw 3 is an arc-shaped rod; the claw body is vertically arranged, and one side of the arc-shaped concave is towards the central direction (i.e. the patella direction) of the main positioning rod 1; the top end of the auxiliary positioning rod 2 is provided with an integrally formed second hanging ring 7, and the second hanging ring 7 is hung on the auxiliary positioning rod 2 and can slide back and forth along the length direction of the auxiliary positioning rod 2; the second hanging ring 7 and the auxiliary positioning rod 2 can be arranged tightly, have certain friction force and can slide but not loosen; the lower claw end of the fixed claw 3 is used for being supported on the periphery of the patella;
the fixing claw 3 is provided with a plurality of positioning holes 4 for the Kirschner wires to pass through, the positioning holes 4 are provided with integrally formed positioning tubes, the Kirschner wires pass through the positioning tubes, the length of the contact of the Kirschner wires is increased by the positioning tubes, and the Kirschner wires can be inserted into the patella more stably.
In addition, a group of fixed claws on the movable auxiliary positioning rod 2 is provided with a plurality of positioning holes 4 which are arranged from top to bottom along the length direction of the claws, and the holes axially face the patella; a group of fixed claws on the fixed auxiliary positioning rod 2 are provided with penetrating hollow areas 8 corresponding to the positioning holes 4, and when the two groups of fixed claws 3 have larger overlap ratio in the leg length direction, the hollow areas 8 can prevent the kirschner wires penetrating from the positioning holes 4 through the patella from touching the fixed claws 3; therefore, the fixing claw 3 does not need to be avoided correspondingly and accurately, and the convenience of operation is improved. As shown in fig. 1 and 3.
Furthermore, the top end of the fixed claw 3 and the second hanging ring can also be rotatably connected through a rotating shaft, so that the fixed claw 3 can horizontally rotate. Therefore, the fixation adjustability of the fixing claw 3 can be further enhanced, and the fixing claw is suitable for more patellas with different sizes and shapes.
When the utility model is used, the knee joint on the affected side is slightly bent, the skin and the subcutaneous tissue in front of the knee joint of the affected limb are incised in an operation, the broken end of the patella is exposed, the broken end is cleaned and reset, and then the main positioning rod is horizontally and longitudinally arranged on the upper pole and the lower pole of the patella, namely along the longitudinal axis direction of the lower limb; rotating the positioning ring to enable the positioning ring to be tightly attached to the hanging ring of the auxiliary positioning rod, pushing the auxiliary positioning rod inwards (towards the patella), adjusting the position of the fixing claw on the auxiliary positioning rod, enabling the fixing claw to be tightly clamped around the reset patella, enabling the whole positioning device and the patella to be relatively fixed in position, and then selecting a proper positioning tube position to drill into the Kirschner wire at an ideal position; therefore, when the Kirschner wire is drilled into the fractured patella through the positioning tube to be temporarily fixed, the Kirschner wire can be accurately drilled into the set position without deviation. The scale marks on the main positioning rod and the auxiliary positioning rod can be used as a reference for carrying out accurate fine adjustment on the positions of the positioning claws.
The utility model has the advantages that:
1. the fracture reduction and fixation, the kirschner wire guiding and the screw length measuring are integrated, so that the operation time is greatly shortened, and the X-ray radiation in the operation is reduced;
2. after the fracture is reset, the fracture is pressed and fixed through a rotating nut (positioning ring), the pressing progress is in a submillimeter level, the pressing degree is controlled accurately, and fracture and displacement of the fracture caused by over-pressing are avoided;
3. the sleeve (positioning tube) on the positioning hole effectively ensures that the direction of the Kirschner wire is parallel to the patella joint surface; the fixing claw is provided with a plurality of positioning holes, and the proper depth (distance from the patella articular surface) is selected according to side perspective; the horizontal angle (and the patella edge distance) of the second hanging ring is adjusted according to the orthoscopic perspective, so that the kirschner wire is ensured to be positioned at the ideal position in the three-dimensional direction (the parallel degree with the patella joint surface, the distance with the patella joint surface and the patella edge distance) after the needle is inserted, and the fixing effect of the operation is better ensured. Repeated fluoroscopy (increasing X-ray radiation injury of patients and doctors) and repeated adjustment (fracture and displacement of fracture blocks) caused by operation of an operator only by experience are avoided, the operation time is shortened, and the operation risk is reduced;
4. the tips of the fixed claws and the hanging rings on the main positioning rod are positioned at the same horizontal position, so that the distance between the fixed claws (namely the length of the patella) can be directly read through the scales on the main positioning rod, a hollow screw with proper length can be selected to be screwed in without measurement, and measurement errors (the upper and lower poles of the patella are attached by tough ligaments, and the measurement result deviation is caused by shielding frequently) are avoided;
5. all parts of the device can be detached, so that thorough cleaning and sterile disinfection in medical science are facilitated, and disease transmission caused by residual germs at dead angles of the integrated device is avoided.
While, for purposes of simplicity of explanation, the above-described methodologies are shown and described as a series of structures, it is to be understood and appreciated that the methodologies are not limited by detail, as some structures may, in accordance with one or more embodiments, occur in different orders and/or concurrently with other acts from that shown and described herein or not shown and described herein, but as may be understood by those of ordinary skill in the art.
The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the spirit or scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A Kirschner wire positioning device for patella reduction surgery is characterized by comprising a main positioning rod, an auxiliary positioning rod and a fixed claw;
the main positioning rod is arranged on the knee;
the two auxiliary positioning rods are arranged on the main positioning rod, at least one slidable auxiliary positioning rod can slide back and forth along the length direction of the main positioning rod and can be positioned, namely, the distance between the two auxiliary positioning rods is adjustable, and the two auxiliary positioning rods are positioned on two sides of the fractured patella;
the fixed claw is arranged on the auxiliary positioning rod, the claw body is vertically arranged, the top end of the claw body is connected with the auxiliary positioning rod in a sliding mode, and the claw body can slide back and forth along the length direction of the auxiliary positioning rod; wherein, a plurality of positioning holes for the penetration of the Kirschner wire are arranged on the fixing claw on at least one auxiliary positioning rod;
the fixing claw can be clamped and fixed on the fractured patella by adjusting the distance between the two auxiliary positioning rods and the position of the fixing claw on the auxiliary positioning rods, and the position of the Kirschner wire penetrating into the patella through the positioning hole can be limited.
2. The kirschner wire positioning device of claim 1, wherein the main positioning rod is a cylinder, and the surface of the rod body is provided with an external thread; the slidable auxiliary positioning rod is provided with a hanging ring which is sleeved on the rod body of the main positioning rod and can slide on the main positioning rod;
a positioning ring is arranged at the end part of the main positioning rod and outside the hanging ring and is used as a positioning device of the slidable auxiliary positioning rod, the positioning ring is provided with an internal thread matched with the external thread of the main positioning rod, and the positioning ring can be propped against the outer side surface of the slidable auxiliary positioning rod; namely, after the slidable auxiliary positioning rod is hung from one end of the main positioning rod, the positioning ring is screwed on the end of the main positioning rod; along with the positioning ring is screwed into the middle of the main positioning rod, the distance between the two auxiliary positioning rods is continuously reduced.
3. The k-wire positioning device as claimed in claim 2, wherein there are two holding claws on each of the secondary positioning levers.
4. The kirschner wire positioning device according to claim 1, 2 or 3, wherein a positioning tube is arranged on the fixing claw, the positioning tube passes through the positioning hole, and the kirschner wire passes through the positioning tube; this enhances the stability of the insertion of the kirschner wire.
5. The k-wire positioning device of claim 4, wherein the fixed jaw is an arcuate rod; the top end of the auxiliary positioning rod is provided with a second hanging ring which is hung on the auxiliary positioning rod through the second hanging ring and can slide.
6. The Kirschner wire positioning device according to claim 5, wherein there are two secondary positioning rods, there are two sets of corresponding fixing claws, and when there are positioning holes on one set of fixing claws, there are pierced hollow areas opposite to the positioning holes on the other set of fixing claws, and the pierced hollow areas can prevent the Kirschner wire passing through the patella from the positioning holes from touching the fixing claws.
7. The Kirschner wire positioning device of claim 6, wherein the two sides of the cylinder of the main positioning rod are provided with tangent planes, and the tangent planes are marked with scale marks.
8. The k-wire positioning device of claim 7, wherein the secondary positioning rod is marked with scale marks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922040131.3U CN211066985U (en) | 2019-11-23 | 2019-11-23 | Kirschner wire positioning device for patella reduction operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922040131.3U CN211066985U (en) | 2019-11-23 | 2019-11-23 | Kirschner wire positioning device for patella reduction operation |
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| Publication Number | Publication Date |
|---|---|
| CN211066985U true CN211066985U (en) | 2020-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922040131.3U Active CN211066985U (en) | 2019-11-23 | 2019-11-23 | Kirschner wire positioning device for patella reduction operation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112842495A (en) * | 2021-01-13 | 2021-05-28 | 东莞市松山湖中心医院(东莞市石龙人民医院、东莞市第三人民医院、东莞市心血管病研究所) | Percutaneous closed reduction patellar fracture internal fixation device |
-
2019
- 2019-11-23 CN CN201922040131.3U patent/CN211066985U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112842495A (en) * | 2021-01-13 | 2021-05-28 | 东莞市松山湖中心医院(东莞市石龙人民医院、东莞市第三人民医院、东莞市心血管病研究所) | Percutaneous closed reduction patellar fracture internal fixation device |
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