CN211022852U

CN211022852U - Double-head threading device for orthopedic surgery

Info

Publication number: CN211022852U
Application number: CN201921512440.XU
Authority: CN
Inventors: 刘志军
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-11
Filing date: 2019-09-11
Publication date: 2020-07-17
Anticipated expiration: 2029-09-11

Abstract

The utility model discloses a double-head threading device for orthopedic surgery, which comprises a cylindrical needle body, wherein the front and the rear ends of the needle body are cone-shaped needle points, the front end is a front needle point, and the rear end is a rear needle point; the needle body is provided with at least one threading hole near the front needle point, and the threading hole vertically penetrates through the needle body; the barb structure is a groove on the needle body, the side view shape of the groove is in a parallelogram shape, the barb structure comprises an opening communicated with the outside, the opening extends forwards from the rear end to form a hook part, and the hook part and the groove form a groove extending backwards; the front end of the threading device is of a threading hole structure and is used for medical operation of easy threading, and the rear end of the threading device is of a barb structure and is used for medical operation of difficult threading; this threading apparatus has kept original through wires hole structure, satisfies the use habit that the doctor has been all the time, has increased barb structure in order to satisfy the medical operation of threading difficulty.

Description

Double-head threading device for orthopedic surgery

Technical Field

The utility model relates to an orthopedic surgery appliance, in particular to a double-end threading device for orthopedic surgery.

Background

In orthopedic injury treatment, tibiofibular separation and shoulder joint dislocation are common injuries in clinic; wherein, the inferior tibiofibular separation can cause the instability of the ankle joint, which causes the change of the contact area and the biomechanical property of the ankle joint, possibly secondary osteoarthritis and aggravation of ankle joint damage; the dislocation of the acromioclavicular joint is mainly direct violent injury, the shoulder is injured by direct impact in traffic accidents, and when the part is fractured or dislocated, the adjacent ligaments can be injured to different degrees, so that the function of the acromioclavicular joint is disturbed. In the treatment, because the tibiofibular syndesmosis and the acromioclavicular joint are elastic joints, the fixing modes of conventional internal fixtures such as a lag screw, a Kirschner wire tension band, a clavicle hook steel plate and the like are strong, and complications such as internal fixture looseness, fracture and the like can occur in some cases. Therefore, elastic fixation should be performed for both elastic joint injuries. Currently, in a common elastic fixation device, a high-strength polymer silk thread needs to be threaded from one end of a joint to the other end through a bony structure of the joint. When the existing instrument is used for fixing the inferior tibiofibular syndesmosis injury or acromioclavicular joint dislocation, a hole needs to be drilled by a Kirschner wire or a drill to create a bone marrow channel, and a device connected with a polymer silk thread passes through a bone tunnel after the Kirschner wire or the drill is withdrawn. At this time, due to the soft tissue occlusion, it is often necessary to try several times even under the guidance of intraoperative C-arm fluoroscopy to pass the polymer silk thread through the bone marrow tract. Not only does this delay the time of the procedure, increasing X-ray exposure for the patient and the physician, but repeated punctures can exacerbate local soft tissue injury. Therefore, in the prior art, the chinese utility model patent with the granted publication number CN201861744U discloses a bone pin with threading function, and the technical problem to be solved is to provide an apparatus which can complete the threading process through one-time perforation, and the technical scheme is as follows: the needle is a slender metal round needle, the front end of a needle body is provided with a threading hole, the threading hole penetrates through two sides of the needle body, and the middle part of the needle body is provided with threads; the using method comprises the following steps: after the acromioclavicular joint dislocation reduction or the tibiofibular combined separation injury reduction, drilling holes at one time, penetrating through bone substances on two sides of a joint, enabling the tip end of a needle body of a bone round needle to appear on the opposite side, then enabling a polymer silk thread to pass through a threading hole of the bone round needle, withdrawing the bone round needle from an original drilling channel, and bringing the silk thread to the side to complete the threading process; however, the diameter of the existing threading apparatus is usually 1-2 mm, the threading hole is very small, the threading is difficult to rapidly pass through, and the operation time is delayed, therefore, the inventor designs a double-head threading apparatus for orthopedic operation.

Disclosure of Invention

The utility model aims to provide a double-head threading device for orthopedic surgery, the front end of the threading device is of a threading hole structure and is used for medical operation of easy threading, and the rear end of the threading device is of a barb structure and is used for medical operation of difficult threading; this threading apparatus has kept original through wires hole structure, satisfies the use habit that the doctor has been all the time, has increased barb structure in order to satisfy the medical operation of threading difficulty.

The utility model adopts the technical scheme as follows: a double-head threading device for orthopedic surgery comprises a cylindrical needle body and is characterized in that the front end and the rear end of the needle body are conical needle points, the front end of the needle body is a front needle point, and the rear end of the needle body is a rear needle point; the needle body is provided with at least one threading hole near the front needle point, and the threading hole vertically penetrates through the needle body; the needle body be close to back needle point department and be provided with a barb structure, barb structure be the recess on the needle body, the side view shape of recess is parallelogram shape, barb structure is including the external uncovered of intercommunication, uncovered department, extend hook portion forward from the rear end, hook portion and recess form a slot that extends backward.

Furthermore, the three threading holes are arranged, and the three threading holes are adjacent and have the same aperture.

Further, the through wires hole set up threely, three through wires hole is adjacent, the aperture grow gradually of three through wires hole, the aperture that is close to preceding needle point is little, the aperture of keeping away from preceding needle point is big.

Furthermore, the threading hole is circular or oval.

Further, the hook part faces the groove.

Furthermore, the front end of the hook part is an arc-shaped surface.

The needle sleeve is detachably sleeved at the two ends of the needle body, wherein the needle sleeve sleeved at the front end covers the threading hole; the needle cover sleeved at the rear end covers the barb structure.

Further, the needle cover and the needle body adopt a threaded connection mode.

The outer diameter of the hollow sleeve is smaller than the diameter of the drilled bone hole, and the inner diameter of the hollow sleeve is larger than the diameter of the needle body; the length of the hollow cannula is less than that of the needle body.

Furthermore, the needle body, the needle head sleeve and the hollow cannula are made of medical stainless steel.

The beneficial effects of the utility model reside in that: the utility model provides a double-head threading device for orthopedic surgery, the front end of the threading device is of a threading hole structure and is used for medical operation of easy threading, and the rear end of the threading device is of a barb structure and is used for medical operation of difficult threading; this threading apparatus has kept original through wires hole structure, satisfies the use habit that the doctor has been all the time, has increased barb structure in order to satisfy the medical operation of threading difficulty.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural diagram of the front needle tip.

Fig. 3 is a schematic structural diagram of the rear needle tip.

Fig. 4 is a schematic perspective view of the hook portion.

In the figure: the needle body 1, the front needle point 2, the rear needle point 3, the threading hole 4, the groove 5, the opening 6, the hook part 7, the groove 8, the needle cover 9 and the hollow sleeve 10.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings, which are only used for illustrating the technical solutions of the present invention and are not limited.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention; furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated; thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other; the specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

As shown in fig. 1-4, a double-head threading device for orthopedic surgery comprises a cylindrical needle body 1, wherein the front end and the rear end of the needle body 1 are cone-shaped needle points, the front end of the needle body is a front needle point 2, and the rear end of the needle body is a rear needle point 3; the needle body 1 is provided with at least one threading hole 4 near the front needle point 2, and the threading hole 4 vertically penetrates through the needle body 1; needle body 1 be close to back needle point 3 department and be provided with a barb structure, barb structure be recess 5 on the needle body, recess 5 looks sideways at the shape and is parallelogram shape, barb structure is including the external uncovered 6 of intercommunication, uncovered 6 department, extend couple portion 7 forward from the rear end, couple portion 7 and recess 5 form a slot 8 that extends backward.

In the scheme, three threading holes 4 can be arranged, wherein the three threading holes are adjacent and have the same aperture; three adjacent threading holes are easier to thread a thread into any one than a single one.

As shown in fig. 2, another scheme is that three threading holes 4 are arranged, the three threading holes are adjacent, the aperture of each threading hole is gradually increased, the aperture close to the front needle point is small, and the aperture far away from the front needle point is large; the threading holes with different diameters are used for threading threads with different diameters, so that the application range is expanded.

The threading hole 4 may be circular or oval or other shapes.

Further, the hook part 7 faces the groove, as shown in fig. 3, so as to prevent the hook part from catching or touching soft tissue when the hook part exits from the drill hole, and avoid damage to the soft tissue; therefore, the front end of the hook part is further provided with an arc-shaped surface.

Further, the needle comprises two needle covers 9 which are used for being sleeved at the two ends of the needle body, the needle covers 9 are detachably sleeved at the two ends of the needle body 1, and the needle cover sleeved at the front end covers the threading hole 4; the needle head sleeve sleeved at the rear end covers the barb structure; the needle cover 9 and the needle body 1 can adopt a threaded connection mode; because the two ends of the needle body are cone-shaped needle points, the risk of accidentally injuring a user exists during operation, when one end of the needle body is used for threading, the other end of the needle body is sleeved with a needle cover, and the user is prevented from being accidentally injured; after the use, the needle head sleeves are sleeved at the two ends simultaneously, so that the needle points, the threading holes and the barb structures at the two ends can be protected, and dust is prevented from being infected.

Further, the bone puncture needle also comprises a hollow sleeve 10 matched with the needle body, wherein the outer diameter of the hollow sleeve 10 is smaller than the diameter of the drilled bone hole, and the inner diameter of the hollow sleeve is larger than the diameter of the needle body; the length of the hollow cannula is less than that of the needle body.

The needle body 1, the needle cover 9 and the hollow cannula 10 are made of medical stainless steel.

The using method of the device comprises the following steps: firstly, drilling a hole by using a Kirschner wire or a drill to create a bone marrow channel, withdrawing the Kirschner wire or the drill, then penetrating one end of a threading device through the bone marrow channel, enabling the tip end of a needle body to be arranged on the opposite side, and penetrating a thread through one threading hole when one end of the threading hole is used; when one end of the barb structure is used, the wire is clamped in the groove; and then, withdrawing the threading device from the original drilled channel, and simultaneously bringing the silk thread to the side to finish the threading process.

In addition, the threading device can be matched with the hollow sleeve 10 to be used for creating a bone marrow channel, the hollow sleeve 10 penetrates into the bone marrow channel after the kirschner pin or the drill is withdrawn, the functions of supporting and protecting soft tissues are achieved, then the threading device penetrates through the hollow sleeve 10 for threading, and the hollow sleeve 10 is matched to achieve the functions of protecting the soft tissues and enabling the threading device to smoothly penetrate through and withdraw.

Although the present invention has been described in detail with reference to the foregoing examples, it will be apparent to those skilled in the art that modifications may be made to the above-described embodiments, or equivalent changes and modifications may be made to some of the technical features of the embodiments.

Claims

1. A double-head threading device for orthopedic surgery comprises a cylindrical needle body and is characterized in that the front end and the rear end of the needle body are conical needle points, the front end of the needle body is a front needle point, and the rear end of the needle body is a rear needle point; the needle body is provided with at least one threading hole near the front needle point, and the threading hole vertically penetrates through the needle body; the needle body be close to back needle point department and be provided with a barb structure, barb structure be the recess on the needle body, the side view shape of recess is parallelogram shape, barb structure is including the external uncovered of intercommunication, uncovered department, extend hook portion forward from the rear end, hook portion and recess form a slot that extends backward.

2. The double-headed threader for orthopedic surgery of claim 1, characterized in that: the three threading holes are arranged, and the three threading holes are adjacent and have the same aperture.

3. The double-headed threader for orthopedic surgery of claim 1, characterized in that: the through wires hole set up threely, three through wires hole is adjacent, the aperture grow gradually of three through wires hole, the aperture that is close to preceding needle point is little, the aperture of keeping away from preceding needle point is big.

4. The double-ended threader for orthopedic surgery of any of claims 1-3, wherein: the threading hole is circular or oval.

5. The double-headed threader for orthopedic surgery of claim 4, characterized in that: the hook part faces the groove.

6. The double-headed threader for orthopedic surgery of claim 5, characterized in that: the front end of the hook part is an arc-shaped surface.

7. The double-headed threader for orthopedic surgery of claim 6, characterized in that: the needle sleeve is detachably sleeved at the two ends of the needle body, and the needle sleeve sleeved at the front end covers the threading hole; the needle cover sleeved at the rear end covers the barb structure.

8. The double-headed threader for orthopedic surgery of claim 7, characterized in that: the needle head sleeve and the needle body adopt a threaded connection mode.

9. The double-headed threader for orthopedic surgery of claim 8, characterized in that: the bone drill is characterized by also comprising a hollow sleeve matched with the needle body for use, wherein the outer diameter of the hollow sleeve is smaller than the aperture of the drilled bone hole, and the inner diameter of the hollow sleeve is larger than the diameter of the needle body; the length of the hollow cannula is less than that of the needle body.

10. The double-headed threader for orthopedic surgery of claim 9, characterized in that: the needle body, the needle head sleeve and the hollow sleeve are made of medical stainless steel.