Novel drag hook

Abstract

The utility model provides a novel draw hook which comprises a draw hook body, the draw hook body comprises a long-arm draw hook, a short-arm draw hook and a shoulder connecting body, and the long-arm draw hook and the short-arm draw hook are connected in an L shape through the shoulder connecting body; the shoulder connecting body is provided with at least one group of kirschner wire positioning holes, and the extending direction of the kirschner wire positioning holes is parallel to the length direction of the short-arm drag hook. Or / and the extending direction of the kirschner wire positioning holes is parallel to the length direction of the short-arm drag hook, and the extending direction of all the kirschner wire positioning holes is located on the outer side of the body; through the double-end design of the retractor body, the long-arm retractor or the short-arm retractor can be selected according to the quantity of soft tissues; the Kirschner wire positioning hole is formed in the shoulder connecting body of the drag hook body, and during an orthopedic operation, after the drag hook is dragged to a preset position, a Kirschner wire is driven into the Kirschner wire positioning hole to fix the drag hook body on a bone substance, so that an operation assistant can be liberated, meanwhile, the number of operation instruments is reduced, and the operation is conveniently carried out.

Description

TECHNICAL FIELD

[0001] The utility model relates to surgical equipment technical field, especially a novel drag hook. BACKGROUND

[0002] The drag hook is often used in the orthopedics operation, especially for the patient of fracture or hip, knee joint replacement, needs to draw the soft tissue around and expose it, facilitates the operation of bone operation, but the existing soft tissue drag hook needs the operation assistant to hold and continuously pull, aiming at the problem, the prior art has the automatic drag hook, through the handle self locking etc. Structure keeps the opening angle of the drag hook fixed, but in the operation, by the factors such as the elasticity of soft tissue itself, incision site and uneven stress, still need the assistant to adjust and keep pulling direction from time to time, cannot liberate the operation assistant. In addition, when fixing the fracture site, the electric drill is often used to drill into the drill bit or kirschner wire in the bone, in order to avoid the damage to the surrounding cartilage tissue when the drill bit or kirschner wire rotates at high speed, the drill bit guide or kirschner wire guide is needed, when using, as the drag hook is in traction, the operator or other assistants need to operate the steel needle guide, and also need to adjust the drag hook to ensure that the operation site is completely exposed, so that the operation can be completed under the cooperation of the main operator and the assistant, and the operation of multiple medical enterprises is inconvenient, which also increases the treatment cost of patients, so a medical device considering the drill bit, kirschner wire guide and soft tissue drag hook is urgently needed, which can reduce the use of surgical instruments and enable the main operator to complete the operation without an assistant, making some operations easier and more convenient. SUMMARY

[0003] In view of the above technical problems, the utility model designs a novel drag hook, through the double -end design of the drag hook body, can choose long -arm drag hook or short -arm drag hook according to the amount of soft tissue, the steel needle positioning hole is arranged on the shoulder connecting body of the drag hook body, when the orthopedics operation, after the drag hook is pulled to the predetermined position, the drag hook body is fixed on the bone by the kirschner wire positioning hole and the kirschner wire are hit, this can liberate the operation assistant, and the number of surgical instruments is reduced, and the operation is facilitated.

[0004] Specifically, the utility model provides a novel drag hook, including the drag hook body, the drag hook body includes long -arm drag hook, short -arm drag hook and shoulder connecting body, the long -arm drag hook with short -arm drag hook is connected through L type of shoulder connecting body, at least one group of steel needle positioning hole is arranged on the shoulder connecting body, the extension direction of steel needle positioning hole is parallel with the length direction of short -arm drag hook.Or / and the extension direction of steel needle positioning hole is parallel with the length direction of short -arm drag hook, and the extension direction of all steel needle positioning hole is located on the outside of the body.

[0005] The further optimization of the utility model technical scheme, four groups of steel needle positioning holes are arranged on the shoulder connecting body, all the steel needle positioning holes are arranged on the shoulder connecting body in staggered mode;The extension direction of the first group of steel needle positioning holes is parallel to the length direction of the short arm drag hook;The extension direction of the second group of steel needle positioning holes is parallel to the length direction of the long arm drag hook;The extension direction of the third group of steel needle positioning holes and the extension direction of the fourth group of steel needle positioning holes are all arranged in inclined mode.

[0006] The further optimization of the utility model technical scheme, the extension direction of the third group of steel needle positioning holes forms a 15-35 degree angle with the length direction of the short arm drag hook;The extension direction of the fourth group of steel needle positioning holes forms a 15-35 degree angle with the length direction of the long arm drag hook.

[0007] The further optimization of the utility model technical scheme, the number of the steel needle positioning holes in each group at least includes two, and the diameters of all the steel needle positioning holes in each group are different.

[0008] The further optimization of the utility model technical scheme, the short arm drag hook and the long arm drag hook are all provided with outward flanging on the left and right sides in the width direction, and the flanging is used to block the soft tissues on both sides of the drag hook.

[0009] The further optimization of the utility model technical scheme, the thickness of the short arm drag hook near one end of the shoulder connecting body is greater than the thickness of the free end thereof;The thickness of the long arm drag hook near one end of the shoulder connecting body is greater than the thickness of the free end thereof.

[0010] The further optimization of the utility model technical scheme, the free end of the short arm drag hook and the long arm drag hook are all provided with arc-shaped barbs, and the included angle of the arc-shaped barbs relative to the length extension direction of the corresponding drag hook is between 5-35 degrees.

[0011] The further optimization of the utility model technical scheme, the drag hook body is made of stainless steel material.

[0012] Compared with the prior art, the utility model technical scheme has the advantages of:

[0013] Through the design of the drag hook body, the drag hook body can be used as an ordinary traction drag hook, a drill or a kirschner wire guide, and the kirschner needle positioning hole can fix the drag hook body when the drag hook body is used as a traction drag hook, so that the surgical assistant can be liberated, one hook has multiple uses, manpower is saved, the number of instruments is reduced, and the development of surgery is facilitated.

[0014] By setting four groups of steel needle positioning holes, corresponding to two groups at the short arm hook and the long arm hook, so that in use, it can be fixed for different angles Steel needle, more firm, more selective; At the same time, set the kirschner wire positioning hole in each group to different diameters, so that it can adapt to different models of kirschner wire or drill bit.

[0015] By setting the outward flanging on the short arm hook and the long arm hook, the soft tissue pulled by the hook can be organized into the surgical area, and the arc-shaped barb is used to make the traction effect on the soft tissue better, and in addition, the thickness of the short arm hook and the long arm hook is designed, which can increase the strength of the hook, because a plurality of steel pin positioning holes are arranged near the shoulder connecting body, so the strength of the hook body is ensured by the thickness design of the hook, and deformation will not occur during use. BRIEF DESCRIPTION OF DRAWINGS

[0016] In the following, the present application will be described in more detail based on embodiments and with reference to the drawings.

[0017] Figure 1 is a side view of the hook body in the present application;

[0018] Figure 2 is a side view of the hook body in the present application in the direction of the short arm hook.

[0019] In the drawings, the same components are designated by the same reference numerals. The drawings are not drawn to scale.

[0020] Label explanation:

[0021] Short arm hook; 2-Long arm hook; 3-Shoulder connecting body; 4-Kirschner wire positioning hole;

[0022] First group of kirschner wire positioning holes;

[0023] Third group of kirschner wire positioning holes;

[0024] Second group of kirschner wire positioning holes;

[0025] Fourth group of kirschner wire positioning holes. DETAILED DESCRIPTION

[0026] The embodiments of the present application will be described below by specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the specification. Obviously, the described embodiments are part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0027] The terms used in the embodiments of the present application are merely for the purpose of describing specific embodiments and are not intended to limit the present application. The singular forms "a," "an," and "the" used in the embodiments of the present application and the appended claims are intended to include the plural forms as well, unless the context clearly indicates otherwise. "Plural" generally includes at least two, but does not exclude the possibility of including at least one.

[0028] It should also be noted that the terms "comprising", "containing", or any other variant thereof are intended to cover non-exclusive inclusions, so that the goods or systems including a series of elements not only include those elements, but also include other elements not explicitly listed, or also include elements inherent to such goods or systems. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the goods or system including the element. In the description of the present application, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "back", "inner", "outer", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0029] The present application will be further described below with reference to the accompanying drawings.

[0030] In orthopedic surgery, a retractor is often needed to expose the bone by retracting the external soft tissue, so that the bone part can be treated. In the process of treatment, Kirschner wire is often used to fix the fracture part. In order to prevent the rotating Kirschner wire or drill bit from contacting the soft tissue and causing damage when the Kirschner wire is punched in, a Kirschner wire or drill bit guide is needed. The specific use process is to first position the guide, and then fix the Kirschner wire to the predetermined position through the guide to achieve the effect of fixing the fracture. However, the soft tissue retractor and the Kirschner wire or drill bit guide in the prior art need to be used separately, which brings inconvenience to the operating physician, and the instruments need to be replaced during the operation, causing many inconveniences. In addition, the existing soft tissue retractor is divided into ordinary retractor and automatic retractor. The ordinary retractor needs to be assisted by a surgical assistant for traction, and cannot free manpower. The automatic retractor has a relatively complex structure, and the force point of the automatic retractor is mainly on the soft tissue when used. However, the human tissue will be elastic by itself, and the stress of the incision part will also be different, so the automatic retractor is generally used more in spinal surgery, and has certain limitations in use scene.

[0031] In view of the problems in the prior art, the technical scheme of the present application provides a new type of drag hook, which provides more choices for orthopedic surgery operators, and specifically comprises a drag hook body, a long-arm drag hook 2, a short-arm drag hook 1 and a shoulder connecting body 3 are arranged on the drag hook body, the long-arm drag hook 2 and the short-arm drag hook 1 are connected in an L shape through the shoulder connecting body 3, and when in use, the long-arm drag hook 2 or the short-arm drag hook 1 can be selected according to the specific surgical site, for example, the short-arm drag hook 1 is usually used for arm or calf fracture, and the long-arm drag hook 2 is usually used for thigh or hip surgery, preferably, the width of the short-arm drag hook is 2.5 cm, and the length is 6 cm, and the width of the long-arm drag hook is 3.5 cm, and the length is 9 cm. The shape is that the long-arm is wide and long, and the short-arm is relatively narrow and short, at least one group of steel needle positioning holes are arranged on the shoulder connecting body 3, and the extension direction of the steel needle positioning hole is parallel to the length direction of the short-arm drag hook 1. Or / and the extension direction of the steel needle positioning hole is parallel to the length direction of the short-arm drag hook 1, and the extension directions of all the steel needle positioning holes are located on the outside of the body, when the soft tissue drag hook is used, the soft tissue drag hook can be fixed at the required position through the steel needle positioning hole, so that the surgical assistant can be released, and if traction is not needed, the soft tissue drag hook of the present application can also be used as a steel needle guide. It should be noted that the operation of driving a Kirschner wire into the bone is a routine operation in fracture surgery and does not cause substantial harm to the patient.

[0032] The experimental device is simulated for use, preferably, four groups of Kirschner wire positioning holes are arranged on the shoulder connecting body 3, and all the Kirschner wire positioning holes are arranged in a staggered manner on the shoulder connecting body 3, the extension direction of the first group of Kirschner wire positioning holes a is parallel to the length direction of the short-arm drag hook 1, the extension direction of the second group of Kirschner wire positioning holes c is parallel to the length direction of the long-arm drag hook 2, the extension direction of the third group of Kirschner wire positioning holes b and the extension direction of the fourth group of Kirschner wire positioning holes d are both arranged in an inclined manner, the extension direction of the third group of Kirschner wire positioning holes b forms an angle of 15-35 degrees with the length direction of the short-arm drag hook 1, and the extension direction of the fourth group of Kirschner wire positioning holes d forms an angle of 15-35 degrees with the length direction of the long-arm drag hook 2. The design of the technical feature is to ensure that whether the long-arm drag hook 2 or the short-arm drag hook is used, the drag hook body can be fixed through the two groups of steel needle fixing holes 4, and the intersection design between the two groups of steel needle fixing holes 4 can increase the firmness of the fixation.

[0033] In the preferred embodiment of the technical scheme of the present application, the number of each group of steel needle positioning holes includes at least two, and the diameters of all the Kirschner wire positioning holes in each group are different, so that the flexibility of the use of the soft tissue drag hook can be increased, and the operator can select appropriate steel needle positioning holes for steel needle fixation according to the bone condition of the patient and the fixed position.

[0034] In order to improve the use effect of the soft tissue retractor, the short arm retractor 1 and the long arm retractor 2 are provided with outward flanging on the left and right sides in the width direction, the flanging is used to block the soft tissue on both sides of the retractor, and the needle space is left for the Kirschner wire fixing hole 4 parallel to the corresponding retractor arm, so that the structure layout of the retractor body is more reasonable. At the same time, in order to increase the use effect of the retractor, the arc-shaped barbs are arranged at the free ends of the short arm retractor 1 and the long arm retractor 2, the included angle of the arc-shaped barbs relative to the length extension direction of the corresponding retractor is between 5-35 degrees, the thickness of the arc-shaped barb is about 1-1.5mm, and the preferred use included angle is 10 and 15 degrees, and the thickness is 1.25mm. In this way, the soft tissue close to the bone can be easily pulled together.

[0035] Further optimization of the technical scheme of the utility model, the thickness of the short arm retractor 1 close to the one end of the shoulder connecting body 3 is greater than the thickness of its free end, and the thickness of the long arm retractor 2 close to the one end of the shoulder connecting body 3 is greater than the thickness of its free end, because the Kirschner wire fixing hole 4 is arranged at the shoulder connecting body 3, and the cover design can ensure the strength of the retractor body.

[0036] The retractor body in the technical scheme can be integrally formed using stainless steel, alloy or high polymer materials, and preferably stainless steel material is used, because it has high strength, low cost and can save treatment cost for patients.

[0037] It should be noted that the terms used herein are only intended to describe specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a presence of the features, steps, operations, devices, components and / or combinations thereof.

[0038] Although the utility model has been described with reference to the preferred embodiments, various improvements can be made and equivalent parts can be replaced without departing from the scope of the utility model. In particular, the technical features mentioned in each embodiment can be combined in any way as long as there is no structural conflict. The utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A novel drag hook characterized in that, The hook body comprises a long-arm hook, a short-arm hook and a shoulder connecting body, the long-arm hook and the short-arm hook are connected in L shape through the shoulder connecting body; At least one group of steel needle positioning holes are arranged on the shoulder connecting body, the extension direction of the steel needle positioning holes is parallel to the length direction of the short-arm hook, or / and the extension direction of the steel needle positioning holes is parallel to the length direction of the short-arm hook, and the extension direction of all the steel needle positioning holes is on the outside of the body.

2. The novel drag hook according to claim 1, characterized in that, Four groups of steel needle positioning holes are arranged on the shoulder connecting body, all the steel needle positioning holes are arranged on the shoulder connecting body in a staggered manner; The extension direction of the first group of steel needle positioning holes is parallel to the length direction of the short-arm hook; The extension direction of the second group of steel needle positioning holes is parallel to the length direction of the long-arm hook; The extension direction of the third group of steel needle positioning holes and the extension direction of the fourth group of steel needle positioning holes are both arranged in an inclined manner.

3. The novel drag hook according to claim 2, characterized in that, The extension direction of the third group of steel needle positioning holes forms an angle of 15-35 degrees with the length direction of the short-arm hook, and the extension direction of the fourth group of steel needle positioning holes forms an angle of 15-35 degrees with the length direction of the long-arm hook.

4. The novel drag hook according to claim 1, characterized in that, The number of each group of steel needle positioning holes is at least two, and the diameters of all the steel needle positioning holes in each group are different.

5. The novel drag hook according to any one of claims 1-4, wherein The short-arm hook and the long-arm hook are both provided with outward flanges on the left and right sides in the width direction, and the flanges are used to block the soft tissues on both sides of the hook.

6. The novel drag hook according to claim 5, characterized in that, The thickness of the short-arm hook at the end close to the shoulder connecting body is greater than the thickness of the free end, and the thickness of the long-arm hook at the end close to the shoulder connecting body is greater than the thickness of the free end.

7. The novel drag hook according to claim 5, wherein The free ends of the short-arm hook and the long-arm hook are both provided with arc-shaped barbs, and the included angle of the arc-shaped barbs with respect to the length extension direction of the corresponding hook is between 5-35 degrees.

8. The novel drag hook according to claim 5, wherein The hook body is made of stainless steel material.

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