CN218165356U

CN218165356U - Auxiliary needle-placing temporary fixing device for intertrochanteric fracture

Info

Publication number: CN218165356U
Application number: CN202220836897.1U
Authority: CN
Inventors: 陈昱; 张煌
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-04-13
Filing date: 2022-04-13
Publication date: 2022-12-30
Anticipated expiration: 2032-04-13

Abstract

The utility model discloses a temporary fixing device for auxiliary needle placement for intertrochanteric fracture of femur, which comprises a Kirschner wire, wherein the length of the Kirschner wire is 20 cm; the device comprises a hanging arm and a graduated scale, wherein the hanging arm is of a quarter circle structure with the radius of 20 cm, one end of the hanging arm is provided with a sleeve, the sleeve can be sleeved on the Kirschner wire, the graduated scale is of a cylindrical structure connected to the other end of the hanging arm, and scales and 130-degree graduated lines are arranged on the graduated scale; the auxiliary needle placing piece can slide on the graduated scale, the auxiliary needle placing piece is divided into a sliding piece and an auxiliary needle placing sleeve, a reference line is arranged on the sliding piece, and the auxiliary needle placing sleeve is fixed on the sliding piece.

Description

Auxiliary needle-placing temporary fixing device for intertrochanteric fracture

Technical Field

The utility model relates to an auxiliary needle placing device used in the medical field, in particular to an auxiliary needle placing temporary fixing device for intertrochanteric fracture.

Background

The intertrochanteric fracture of femur mainly occurs in the elderly population, accounts for 3% -4% of the total fracture of the femur, the absolute number of the intertrochanteric fracture of femur increases year by year along with the progress of aging society, and the 1-year mortality rate of conservative treatment of intertrochanteric fracture of femur caused by trauma can reach 20%. In order to reduce the occurrence of complications and abnormal healing caused by long-term bed rest after fracture, surgical operation has become the first accepted treatment.

PFNA is a common surgical modality used clinically to treat femoral intertrochanteric fractures. As a minimally invasive surgery, the operator is required to reposition and maintain the fractured bone as much as possible. Femoral intertrochanteric fracture is unstable fracture, especially for B and C type fracture, often needs the supplementary incision in the place ahead to carry out supplementary reduction, and pulls out little tuberosity portion with vascular forceps through the supplementary incision in the place ahead after reducing, maintains and reduces. If the force is too large in the process of maintaining the reduction, the fracture end moves outwards, and if the force is not enough, the fracture end moves inwards when the spiral blade is knocked, so that the curative effect of the operation is influenced. Therefore, the kirschner wires are needed to perform multi-plane temporary fixation, wherein the channels for fixing the kirschner wires are arranged as far forward or backward as possible, so that the arrangement of the main nail is not influenced, and the fracture ends are prevented from being displaced. In addition, the neck angle is considered in the ideal channel, and slight shaking can cause deviation of the neck angle and lead the kirschner wire to penetrate out of the femoral neck. The existing kirschner wire placing mode can only be blindly done by the experience of an operator through bare hands, but has the following problems: 1. repeated fluoroscopy is needed, even the operator wears a lead garment to place the Kirschner wire under the fluoroscopy, so that the ray receiving frequency of the operator and the patient is increased, and the cancer risk is increased; 2. because the upper section of the femur is cylindrical, when the Kirschner wire is placed in the femur, the femur is easy to slide, the risk of blood vessel and soft tissue injury is increased, and 2-time injury is caused to patients; 3. the position of the inserted kirschner wire is not ideal, and when the direction is required to be changed, the change is very difficult due to the influence of the old bone path. Therefore, the operation is difficult, the operation time is prolonged, the learning curve is long, the secondary injury of a patient is increased, and great trouble is caused to a clinician, especially to a beginner. Therefore, theoretically, if a kirschner wire temporary fixing guide device is designed, the guide device can safely, quickly and effectively insert the kirschner wire temporarily fixed, not only can play a role of temporary fixing, but also can not hinder the insertion of the main nail and avoid the displacement of the fracture end when the spiral blade is inserted, and the technical problem which needs to be solved in the technical field is urgently needed.

Based on this, the utility model designs an interim fixing device of supplementary needle of putting of femoral intertrochanteric fracture to solve above-mentioned problem.

Disclosure of Invention

An object of the utility model is to provide a supplementary interim fixing device of needle of putting of fracture between thighbone tuberosity can accurately put into the capable interim fixing of ke shi needle to do not influence the passageway of putting into of main nail, have wide application prospect to fracture between thighbone tuberosity.

The utility model discloses a realize like this: a femoral intertrochanteric fracture auxiliary needle placement temporary fixing device comprises a Kirschner wire, wherein the length of the Kirschner wire is 20 cm;

the display arm is divided into a hanging arm and a graduated scale, the hanging arm is of a quarter-circle structure with the radius of 20 cm, one end of the hanging arm is provided with a sleeve, the sleeve can be sleeved on the Kirschner wire, the graduated scale is of a cylindrical structure connected to the other end of the hanging arm, and the graduated scale is provided with scales and 130-degree graduated lines;

the auxiliary needle placing piece can slide on the graduated scale, the auxiliary needle placing piece is divided into a sliding piece and an auxiliary needle placing sleeve, a reference line is arranged on the sliding piece, and the auxiliary needle placing sleeve is fixed on the sliding piece.

Further, the length of the Kirschner wire is consistent with the radius of the hanging arm.

Furthermore, 130-degree scale lines are arranged on the scale, a reference line is arranged on the slider, and when the reference line is coincident with the 130-degree scale lines, the auxiliary needle cannula placing angle is prompted to be 130 degrees.

Furthermore, the graduated scale is provided with scales, one small grid is 5 mm, and the other large grid is 10 mm.

The beneficial effects of the utility model are that: the utility model discloses an imbed the ke shi needle in thighbone tuberosity portion the place ahead, hang the exhibition arm on the ke shi needle, the angle is done to the rotatory slider, confirms thighbone neck to put the needle sleeve respectively through two assistance and put the front and back ke shi needle and carry out interim fixing, do not influence the main nail and put into.

Drawings

The present invention will be further described with reference to the following examples and drawings.

Fig. 1 is a schematic structural view of a preferred embodiment of an auxiliary needle-inserting temporary fixation device for intertrochanteric fracture provided by the present invention.

Fig. 2 is a schematic view of the arm.

Fig. 3 is a schematic front view of the scale.

Fig. 4 is a schematic view of the auxiliary needle placing part.

Fig. 5 is a side view of the auxiliary needle placing member.

Fig. 6 is a front view of the auxiliary needle placing member.

In the drawings, the components represented by the respective reference numerals are listed below:

1-kirschner wire; 3-hanging arms; 4-a graduated scale; 5-sleeving a pipe; 6-graduation; 7-130 degree scale mark; 8, auxiliary needle placing parts; 9-a slider; 10-auxiliary needle cannula; 11-base line; 12-small grid; 13-big lattice.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 6, the present invention provides a technical solution: the utility model provides a supplementary interim fixing device of needle of putting of fracture between femoral tuberosity which characterized in that includes: the Kirschner wire 1 is characterized in that the length of the Kirschner wire 1 is 20 cm;

the display arm 2 is divided into a hanging arm 3 and a graduated scale 4, the hanging arm 3 is of a quarter-circle structure with the radius of 20 cm, one end of the hanging arm is provided with a sleeve 5, the sleeve 5 can be sleeved on the Kirschner wire 1, the graduated scale 4 is of a cylindrical structure connected to the other end of the hanging arm 3, and the graduated scale 4 is provided with scales 6 and 130-degree graduated lines 7;

and the auxiliary needle placing piece 8 is capable of sliding on the graduated scale 4, the auxiliary needle placing piece is divided into a sliding piece 9 and an auxiliary needle placing sleeve 10, the sliding piece 9 is provided with a reference line 11, and the auxiliary needle placing sleeve 10 is fixed on the sliding piece 9.

The length of the Kirschner wire 1 is consistent with the radius of the hanging arm 3, so that the distance between the Kirschner wire at the temporary fixed fracture end and the anterior cortex of the femur is consistent with the depth of the Kirschner wire 1, and the distance between the Kirschner wire at the temporary fixed fracture end and the anterior cortex of the femur can be controlled by the depth of the Kirschner wire 1 at the moment, so that the influence on the insertion of the main nail is avoided.

130-degree scale lines 7 are arranged on the scale 4, a reference line 11 is arranged on the slider 9, when the reference line is coincident with the 130-degree scale lines, the auxiliary needle cannula 10 is prompted to have an angle of 130 degrees, and the temporarily fixed Kirschner wire is prevented from passing through the femoral neck due to too large or too small direction within the normal human body cervical shaft angle range.

The graduated scale 4 is provided with scales, a small grid 12 is 5 mm, a large grid 13 is 10 mm, the distance between two auxiliary needle-placing sleeves is adjusted by measuring the anteroposterior diameter of the femur before an operation, a second kirschner wire is placed under the condition that the placement of a main nail is prevented from being influenced, and the posterior wall of the femur is temporarily fixed.

The specific operation steps are as follows:

after satisfactory anesthesia is obtained, a patient lies on the back on a traction table, a diseased limb is fixed, mechanical traction closed reduction is carried out by utilizing a traction device, disinfection treatment is carried out after satisfactory fracture reduction is seen under the perspective of a front side C arm, sterile cloth is laid, a sterile adhesive film is attached, a Kirschner wire with a certain depth is placed in front of a femoral tuberosity part, a display arm is sleeved on the Kirschner wire, an auxiliary needle placing part is rotated, when a reference line on a sliding piece is superposed with a scale line of 130 degrees on a graduated scale, the angle of an auxiliary needle placing sleeve is prompted to be 130 degrees, and the Kirschner wires at the front and the back of the femur are respectively placed along 2 auxiliary needle placing sleeves. Make a skin incision (3 ~ 5cm long) at thighbone tuberosity summit near-end, blunt nature after the fascia lata cuts separates the gluteus medius, stops bleeding and is satisfied back at thighbone tuberosity summit outside and about 1cm department of cortex before, drills into the guide pin from thighbone marrow cavity direction, ensures that C arm machine sees under the perspective that the positive lateral position of guide pin is in the thighbone marrow cavity, and the guide pin lateral position is in on thighbone near-end axis. And (3) reaming the proximal end of the rear femur, selecting a proper intramedullary nail according to the size of a medullary cavity, hammering the intramedullary nail into the medullary cavity, driving a spiral blade and a distal locking nail into the medullary cavity, flushing the incision, and finally closing the incision layer by layer.

Claims

1. The utility model provides a supplementary interim fixing device of needle of putting of fracture between femoral tuberosity which characterized in that includes:

the Kirschner wire (1), wherein the length of the Kirschner wire (1) is 20 cm;

the novel multifunctional wire pulling device comprises a stretching arm (2), wherein the stretching arm (2) is divided into a hanging arm (3) and a graduated scale (4), the hanging arm (3) is of a quarter circle structure with the radius of 20 cm, one end of the hanging arm is provided with a sleeve (5), the sleeve (5) can be sleeved on a Kirschner wire (1), the graduated scale (4) is of a cylindrical structure connected to the other end of the hanging arm (3), and the graduated scale (4) is provided with scales (6) and 130-degree graduated lines (7);

the auxiliary needle placing piece (8) can slide on the graduated scale (4), the auxiliary needle placing piece (8) is divided into a sliding piece (9) and an auxiliary needle placing sleeve (10), a reference line (11) is arranged on the sliding piece (9), and the auxiliary needle placing sleeve (10) is fixed on the sliding piece (9).

2. The auxiliary needle-placing temporary fixing device for the intertrochanteric fracture of the femur of claim 1, wherein: the length of the Kirschner wire (1) is consistent with the radius of the hanging arm (3).

3. The auxiliary needle-placing temporary fixing device for the intertrochanteric fracture of the femur of claim 1, wherein: 130-degree scale marks (7) are arranged on the scale (4), a reference line (11) is arranged on the sliding piece (9), and when the reference line (11) is coincident with the 130-degree scale marks (7), the auxiliary needle cannula (10) is prompted to have an angle of 130 degrees.

4. The auxiliary needle-placing temporary fixing device for the intertrochanteric fracture of the femur of claim 1, wherein: the graduated scale (4) is provided with scales, a small grid (12) is 5 mm, and a large grid (13) is 10 mm.