CN219021469U - Single-head pressurized threaded needle - Google Patents

Abstract

The utility model discloses a single-head pressurized threaded needle, which is sequentially divided into a needle part, a screwing part, a breaking part and a needle part which are integrally formed, wherein the outer peripheral surface of the outer end of the needle part is provided with screwing threads, the length of the screwing threads does not exceed the length of the needle part, the diameter of the screwing part is larger than that of the needle part, and the diameter of the breaking part is smaller than that of the needle part. The thread needle adopts the design of a single-head thread and a screwing part, one side of a fracture part is tensioned by the single-head thread, and meanwhile, the screwing part props against the other side of the fracture part to close a fracture line, so that the design of a full thread is avoided, and the thread processing time is reduced; the screwing part can facilitate the personnel to carry out secondary pressurization by using the T-shaped wrench, and also facilitates the later-stage extraction work of the threaded needle; the small-diameter breaking part is arranged at the screwing part, so that a worker can break off the redundant tail conveniently, and even if the breaking part breaks suddenly during screwing, the screwing part can be used for continuing screwing. The threaded needle is convenient to use and simple to operate.

Description

Single-head pressurized threaded needle

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a single-head pressurized threaded needle.

Background

A pressurized threaded needle (also called a threaded nail) belongs to one of medical instruments, is mainly used for treating fracture, and closes a fracture line by using pressure. When the common threaded needle is used, firstly, a threaded needle with proper length is selected, the tail part of the threaded needle is clamped on an electric hand drill, and the head part of the threaded needle is screwed in along a pore canal; then, when the screw needle is in depth at one end of the screw needle, the screw threads on the screw needle body pull bones at two sides of the fracture part to each other, so that the fracture line is closed; finally, the overlong tail of the threaded needle is sheared, and a certain residual length is reserved, so that the threaded needle is pulled out in the later period.

In the prior art, the conventional threaded needle has the following defects: firstly, when a common thread needle is screwed, the thread needle needs to be tapped in place at one time to close a fracture, otherwise, once the pressurization is insufficient, the second screwing pressurization is not good after the redundant tail is sheared; secondly, when the needle body shears redundant tail parts, not only tools are needed, but also the needle body is complex and laborious; thirdly, the general thread needle is basically used for tensioning two sides of a fracture through full threads, the longer the thread length is, the more time is required for processing, and the phenomenon that the thread slips easily occurs on one side of the fracture where the fracture is firstly tapped.

Disclosure of Invention

The utility model aims to provide a single-head pressurized threaded needle, which solves the problems that the traditional threaded needle is inconvenient to operate, time-consuming and labor-consuming and time-consuming to process when in use.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a single-head pressurized type threaded needle, includes the needle body, the needle body divide into integrated into one piece's tip portion, connects portion soon, rupture portion and needle body portion in proper order, be provided with the screw in screw on the outer peripheral face of tip portion outer end, the length of screw in screw does not surpass the length of tip portion, the diameter of portion soon is greater than the diameter of tip portion, the diameter of rupture portion is less than the diameter of tip portion.

The further technical scheme is as follows: the section of the screwing part is hexagonal or quincuncial.

The further technical scheme is as follows: the breaking part is a conical rod, and one small-caliber end of the conical rod is connected with the screwing part.

The further technical scheme is as follows: and a hemispherical nut is arranged on one side of the screwing part facing the screwing thread.

The further technical scheme is as follows: the diameter of the hemispherical nut is larger than that of the screwing part.

The further technical scheme is as follows: the outer end of the needle body is provided with connecting threads.

The further technical scheme is as follows: the outer end of the needle part is provided with at least one opening.

Compared with the prior art, the utility model has at least one of the following beneficial effects:

the single-head pressurized threaded needle adopts the design of the single-head threads and the screwing parts, when in screwing, the single-head threads tighten one side of a fracture part, and the screwing parts prop against the other side of the fracture part, so that the fracture line is closed, the design of full threads is avoided, and the thread processing time is reduced; the screwing part can facilitate the personnel to carry out secondary pressurization by using the T-shaped wrench, and also facilitates the later-stage extraction work of the threaded needle; the small-diameter breaking part is arranged at the screwing part, so that a worker can break off the redundant tail conveniently, and even if the breaking part breaks suddenly during screwing, the screwing part can be used for continuing screwing. The threaded needle is convenient to use and simple to operate.

Drawings

Fig. 1 is a schematic view of a single-start pressurized threaded needle according to the present utility model.

Fig. 2 is a schematic view of the structure of fig. 1 at another view angle according to the present utility model.

Fig. 3 is a schematic diagram of the present utility model in full section of fig. 2.

Fig. 4 is a schematic structural view of another structure of fig. 1 according to the present utility model.

Reference numerals: 1. a needle body; 2. a needle portion; 3. a screwing part; 4. a breaking part; 5. a needle body; 6. screwing in a thread; 7. hemispherical nut; 8. a connecting thread; 9. and (5) a notch.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

In addition, the embodiments of the present utility model and the features of the embodiments may be combined with each other without collision.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, or are directions or positional relationships conventionally understood by those skilled in the art, are merely for convenience of describing the present utility model and for simplifying the description, and are not to indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "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; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Embodiment one:

in this embodiment, as shown in fig. 1, 2 and 3, a single-head pressurized threaded needle comprises a needle body 1, wherein the needle body 1 is sequentially divided into a needle head 2, a screwing part 3, a breaking part 4 and a needle body 5 which are integrally formed, a screwing thread 6 is arranged on the outer peripheral surface of the outer end of the needle head 2, the length of the screwing thread 6 does not exceed the length of the needle head 2, the diameter of the screwing part 3 is larger than the diameter of the needle head 2, and the diameter of the breaking part 4 is smaller than the diameter of the needle head 2.

The working process of the utility model is as follows: the thread needle is mainly applied to the metaphyseal end of limbs, calcaneus and patella; the implantation form is as follows: the implantation part of the product is below the broken part 4 in fig. 1 (the left part of the broken part 4 in fig. 2 or 3), when in use, a threaded needle with proper length is selected according to the condition of the broken part, the tail part of the needle body 5 is clamped on an electric hand drill, screwed in along a pore canal, when the screwing in is nearly finished, the screwing-in thread 6 of the needle head 2 tightens one side bone of the broken part, the screwing-in part 3 abuts against the other side bone surface of the broken part, and the broken line is automatically closed by utilizing unidirectional pressurization of the screwing-in thread 6; in the screwing process, when the limited torque is reached, the threaded needle automatically breaks from the self-breaking part 4, or when the limited torque is not reached, the threaded needle can be manually bent and broken at the breaking part 4 to move out of the electric hand drill. And finally, checking whether the fracture surface meets the closing requirement, and if the fracture surface does not meet the closing requirement, continuously screwing and pressurizing the joint part 3 by using a T-shaped spanner. Meanwhile, the screwing part 3 can be conveniently used for screwing by a T-shaped spanner at a later stage. When the needle part 2 is taken out. The thread needle adopts the design of a single-head thread and a screwing part, so that the design of a full thread is avoided, and the thread processing time is reduced; the screwing part can facilitate the personnel to carry out secondary pressurization by using the T-shaped wrench, and also facilitates the later-stage extraction work of the threaded needle; the small-diameter breaking part is arranged at the screwing part, so that a worker can break off the redundant tail conveniently, and even if the breaking part breaks suddenly during screwing, the screwing part can be used for continuing screwing. The threaded needle is convenient to use and simple to operate.

Notably, are: the product also effectively avoids the phenomenon that the fracture part is firstly tapped into one side of the bone, and the screw thread is easily loosened due to long-time abrasion of the screw thread 6, so that the product has high fixing strength.

Preferably, the cross section of the screwing part 3 is hexagonal or quincuncial.

And the secondary pressurization is convenient for matching with other tools.

Embodiment two:

in the above embodiment, as shown in fig. 4, the breaking portion 4 is formed as a tapered rod, and the small diameter end of the tapered rod is connected to the screwing portion 3.

Depending on the object used, bones in different locations use tapered rods of different thicknesses to meet different break limiting torque requirements.

The small caliber of the conical rod is generally easier to break, so that the broken part is closer to the screwing part 3 as much as possible, the breaking of the breaking part 4 is more thorough, the smoothness of the outer surface of the screwing part 3 is ensured, and the influence on the human tissues of a patient is avoided.

Preferably, the side of the screwing part 3 facing the screwing thread 6 is provided with a hemispherical nut 7.

The hemispherical nut 7 can be better matched with a threaded channel on the bone.

Preferably, the hemispherical nut 7 has a diameter larger than that of the screwing part 3.

Preferably, the outer end of the needle body 5 is provided with a connecting thread 8.

And the tool is convenient to be matched with other tools.

Preferably, the outer end of the needle part 2 is provided with at least one notch 9.

The notch 9 can hold bone fragments during screwing in to prevent the bone from being broken by expansion.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims (7)

1. The utility model provides a single-end pressurized type threaded needle, includes needle body (1), its characterized in that: needle body (1) divide into integrated into one piece's syringe needle portion (2), connects portion (3), rupture portion (4) and needle body portion (5) soon in proper order, be provided with screw in screw thread (6) on the outer peripheral face of syringe needle portion (2) outer end, the length of screw in screw thread (6) does not surpass the length of syringe needle portion (2), the diameter of portion (3) soon is greater than the diameter of syringe needle portion (2), the diameter of rupture portion (4) is less than the diameter of syringe needle portion (2).

2. A single-start pressurized threaded needle as set forth in claim 1 wherein: the section of the screwing part (3) is hexagonal or quincuncial.

3. A single-start pressurized threaded needle as set forth in claim 1 wherein: the breaking part (4) is a conical rod, and one small-caliber end of the conical rod is connected with the screwing part (3).

4. A single-start pressurized threaded needle as set forth in claim 1 wherein: one side of the screwing part (3) facing the screwing thread (6) is provided with a hemispherical nut (7).

5. A single-start pressurized threaded needle as set forth in claim 4 wherein: the diameter of the hemispherical nut (7) is larger than that of the screwing part (3).

6. A single-start pressurized threaded needle as set forth in claim 1 wherein: the outer end of the needle body (5) is provided with a connecting thread (8).

7. A single-start pressurized threaded needle as set forth in claim 1 wherein: the outer end of the needle head part (2) is provided with at least one opening (9).

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