CN219397511U - Fracture struts compression screw - Google Patents
Fracture struts compression screw Download PDFInfo
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- CN219397511U CN219397511U CN202223066053.2U CN202223066053U CN219397511U CN 219397511 U CN219397511 U CN 219397511U CN 202223066053 U CN202223066053 U CN 202223066053U CN 219397511 U CN219397511 U CN 219397511U
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- nail
- annular
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- fracture
- clamping
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model discloses a fracture expanding and pressurizing screw, which comprises: a main pin and an adjusting tail pin; the main nail is adjusted in the cavity of the adjusting tail nail, and the adjusting tail nail is arranged at the tail end of the main nail; threads are arranged on the outer surface of the main nail and the outer surface of the adjusting tail nail; the inner side surface of the adjusting tail nail is provided with annular bulges, annular grooves are formed between the annular bulges, annular clamping grooves are formed at two ends of the annular bulges, rectangular grooves are formed in the side walls of the annular clamping grooves, a clamping ring is arranged on the outer side wall of the tail end of the main nail, and clamping teeth are fixedly arranged at two ends of the clamping ring; compared with the prior art, the compression screw can freely change the state of the compression screw, including compression state, opening state, static state and screwing state simultaneously, so that the compression screw can realize opening and compression of fracture parts without replacing auxiliary instruments in actual application, brings convenience to operators, and also avoids pain caused by repeated placement of the instruments to patients.
Description
Technical Field
The utility model belongs to the technical field of medical appliances, and particularly relates to a fracture expanding and pressurizing screw.
Background
The fracture is generally divided into closed fracture and open fracture, wherein the closed fracture refers to the complete skin or mucous membrane at the fracture position and is not communicated with the outside; open fracture is the break of skin or mucous membrane near the fracture, the fracture is communicated with the outside, bacteria can enter from the wound, and infection is easy to cause. Open fracture wounds may be formed from the outside in, such as firearm wound fractures; can also be formed by puncturing soft tissues from inside to outside at sharp fracture ends, such as the fracture of pubic bone and ischial branch, which can easily lead to injury of the posterior urethra and bladder, and the fracture of sacral coccyx can puncture the rectum.
After a certain part of the human body is fractured, fracture compression changes often occur, the distance between fracture blocks is reduced after the fracture blocks are mutually extruded, and in the surgical treatment process, a tool is often required to be used for expanding and resetting, and the compression parts of fracture broken ends are separated, so that normal physiological anatomy alignment is restored. During normal operation in clinic, the device is fixed by pressing through a screw or is spread by using some other instruments, but the device is not suitable for various fracture conditions due to great inconvenience in spreading or fixing, such as poor application of force, unstable applied force, incapability of switching and application of the spreading device and the pressurizing device.
Based on the above, various pressurizing devices and fracture expanding devices are designed in the prior art, such as fracture expanding devices with opposite screw threads at two ends, pressurizing screws with unequal screw pitches at front and rear screw threads, clamping devices and the like; the fracture spreader is suitable for larger bone tissue fracture, such as femur, and the compression screw is suitable for compression of smaller fracture; the application mainly solves the problems of compression and expansion of the small fracture screw, such as the fact that the compression screws in the prior art are mutually anti-rotation, the difficulty exists in implantation, the compression state or the expansion state of the compression screws cannot be freely adjusted after implantation, and the screw is simply implanted. The inventor repeatedly experiments under the line, and the screw has a simple structure, but the defects caused by the structure are difficult to overcome all the time no matter how the operation is performed; therefore, the inventor designs a fracture expanding compression screw with a novel structure so as to overcome the defects in the prior fracture compression screw.
Disclosure of Invention
In order to solve the technical problems, the utility model provides the fracture expanding and pressurizing screw, and the tail end of the screw is provided with the adjusting structure, so that the screw can be randomly switched among an expanding state, a pressurizing state and a static state.
In order to achieve the technical effects, the utility model is realized by the following technical scheme: a fracture distracting compression screw comprising: a main pin and an adjusting tail pin;
the main nail is adjusted in the cavity of the adjusting tail nail, and the adjusting tail nail is arranged at the tail end of the main nail; threads are arranged on the outer surface of the main nail and the outer surface of the adjusting tail nail;
the inner side surface of the adjusting tail nail is provided with annular bulges, annular grooves are formed between the annular bulges, annular clamping grooves are formed at two ends of the annular bulges, rectangular grooves are formed in the side walls of the annular clamping grooves, a clamping ring is arranged on the outer side wall of the tail end of the main nail, and clamping teeth are fixedly arranged at two ends of the clamping ring;
furthermore, the outer side wall of the annular bulge is provided with four metal reeds, three annular grooves are formed continuously, the clamping ring is a rubber clamping ring, the clamping ring is positioned in the middle annular groove in a static state, and the clamping teeth are arranged in the annular clamping grooves;
further, the rectangular grooves are circumferentially distributed on the side wall of the annular clamping groove;
further, the inner cavity of the adjusting tail nail is also in threaded connection with a spreading screw, and the end head of the spreading screw is in conical contact with the inner ring of the clamping ring; the inner cavity of the opening screw is provided with a guide channel;
furthermore, the outer end face of the adjusting tail nail is provided with scales, and one side of the tail end of the main nail is fixedly provided with a triangular mark; the inner cavity of the main nail is provided with a guide channel;
the beneficial effects of the utility model are as follows:
the utility model designs a tail adjusting component, the whole compression screw is divided into two parts for mutual adjustment, but the adjusting protrusion and the annular ring are relatively limited, and the tail adjusting component is provided with three compression positions, a middle position and a spreading position, so that the main nail and the adjusting tail nail can be respectively adjusted to the corresponding three positions in actual use, spreading and compression of fracture parts are realized, and the moment is suitable for places without the need of large spreading force and compression force; under the condition that the required moment is large, after the limiting position is adjusted, the vertical horse locks the screw, the conical surface of the supporting screw pushes the clamping ring outwards to provide the tightening force of the clamping ring, so that the whole strong pressurization or supporting of the screw is ensured; simultaneously, threads are arranged on the peripheries of the two parts of the screw, the compression and expansion limits of the two ends of the fracture can be dynamically adjusted as in the case of a compression screw in the prior art by changing the pitch of the threads, and the scale and the triangular mark at the tail end of the screw provide a expansion limit mark, so that an operator can conveniently master the expansion distance;
compared with the prior art, the compression screw can freely change the state of the compression screw, including compression state, opening state, static state and screwing state simultaneously, so that the compression screw can realize opening and compression of fracture parts without replacing auxiliary instruments in actual application, brings convenience to operators, and also avoids pain caused by repeated placement of the instruments to patients.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the overall structure of a fracture distracting compression screw;
FIG. 2 is a schematic cross-sectional view of a fracture distracting compression screw;
FIG. 3 is a schematic view of a main screw and its attachment for a fracture distracting compression screw;
FIG. 4 is a schematic view of an adjusting tail screw and its attachment to a fracture distracting compression screw;
FIG. 5 is a schematic cross-sectional view of an adjusting tail screw of a fracture distracting compression screw
FIG. 6 is an enlarged partial schematic view of portion 4 of FIG. 2;
in the drawings, the list of components represented by the various numbers is as follows:
1-main nail, 11-latch, 12-clasp, 13-triangle mark, 2-adjusting tail nail, 21-annular groove, 22-rectangular groove, 23-metal reed, 24-annular slot and 3-opening screw.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
Referring to fig. 1 to 6, a fracture distracting compression screw, comprising: a main nail 1 and an adjusting tail nail 2;
the main nail 1 is regulated in the inner cavity of the regulating tail nail 2, and the regulating tail nail 2 is arranged at the tail end of the main nail 1; threads are arranged on the outer surface of the main nail 1 and the outer surface of the adjusting tail nail 2;
the inner side surface of the adjusting tail nail 2 is provided with annular bulges, annular grooves 21 are formed between the annular bulges, annular clamping grooves 24 are formed at two ends of the annular bulges, rectangular grooves 22 are formed in the side walls of the annular clamping grooves 24, a clamping ring 12 is arranged on the outer side wall of the tail end of the main nail 1, and clamping teeth 11 are fixedly arranged at two ends of the clamping ring 12; the clamping teeth 11 are clamped into the rectangular grooves 22, and the main nails 1 and the adjusting tail nails 2 are limited so as to prevent the main nails 1 and the adjusting tail nails 2 from rotating relatively, so that the main nails 1 and the adjusting tail nails 2 can be screwed together into bones;
in this embodiment, a specific implementation manner of stable clamping of the main nail 1 and the adjusting tail nail 2 is provided, the outer side wall of the annular protrusion is provided with four metal reeds 23, three annular grooves 21 are formed continuously, namely, one annular groove 21 is arranged between every two protrusions, the clamping ring 12 is a rubber clamping ring 12, the clamping ring is positioned in the middle annular groove 21 in a static state, the clamping teeth 11 are arranged in the annular clamping groove 24, at this moment, the main nail 1 can freely rotate in the adjusting tail nail 2, and when the adjusting tail nail 2 is placed in bone tissue, the main nail 1 can be independently rotated to determine whether the whole adjuster is opened or pressurized;
in this embodiment, when both the main nail 1 and the adjusting tail nail 2 are placed in the bone of the patient, the outer side of the main nail 1 is pushed into the front annular groove 21 by the clamping ring 12 of the main nail 1 through the screw, and at this time, the fracture expansion with small moment can be realized; if the main nail 1 and the adjusting tail nail 2 are tightly pressed, the clamping ring 12 of the main nail 1 is clamped into the annular groove 21 at the tail end, and at the moment, the fracture end pressurization with small moment can be realized.
Example 2
Based on the above embodiment 1, the rectangular grooves 22 in the present embodiment are circumferentially distributed on the side wall of the annular clamping groove 24, that is, the outer side wall of the annular clamping groove 24 is circumferentially distributed with a plurality of rectangular grooves 22, so that the teeth 11 of the main nail 1 can be clamped into the rectangular grooves 22 at different positions for rotational positioning.
Example 3
Based on the above embodiment 1, the inner cavity of the adjusting tail nail 2 in this embodiment is further connected with a spreading screw 3 by threads, and the end of the spreading screw 3 is conical and contacts with the inner ring of the snap ring 12; in the process of pushing the expanding screw 3, because of the conical end head form, the end head of the screw gradually expands the clamping ring 12 outwards, so that the clamping ring 12 is tightly attached in the annular groove 21, the defect of insufficient elastic limit moment of the metal reed 23 is overcome, and the screw can adapt to expanding and pressurizing with larger moment; the cavity of the opening screw is provided with a guide channel, so that the Kirschner wire can be conveniently guided and placed.
Example 4
Based on the above embodiment 1, in this embodiment, the outer end surface of the tail adjusting nail 2 is provided with scales, and a triangular mark 13 is fixedly provided on one side of the tail end of the main nail 1; the propped distance of the main nail 1 and the adjusting tail nail 2 can be judged through the scales which are indicated by the triangular mark 13 in the relative rotation, so that an operator can conveniently control the operation limit of the device; the inner cavity of the main nail is provided with a guide channel which is matched with the guide channel of the spreading screw, and the Kirschner wire is guided and placed.
Example 5
The main nail 1 and the adjusting tail nail 2 based on the embodiment 1 are provided with threads on the periphery, when the pitches of the two ends are different, the two ends can mutually realize the opening or the compression in the same-direction and same-speed rotation process, the operation modes of the device are enriched, and the device can adapt to more complex environments.
In summary, the utility model designs a tail adjusting assembly, the whole compression screw is divided into two parts for mutual adjustment, but the adjusting protrusion and the annular ring are relatively limited, and are provided with three compression positions, a middle position and a spreading position, so that the main nail and the adjusting tail nail can be respectively adjusted to the corresponding three positions in actual use, spreading and compression of fracture parts are realized, and the moment is suitable for places without the need of large spreading force and compression force; under the condition that the required moment is large, after the limiting position is adjusted, the vertical horse locks the screw, the conical surface of the supporting screw pushes the clamping ring outwards to provide the tightening force of the clamping ring, so that the whole strong pressurization or supporting of the screw is ensured; simultaneously, threads are arranged on the peripheries of the two parts of the screw, the compression and expansion limits of the two ends of the fracture can be dynamically adjusted as in the case of a compression screw in the prior art by changing the pitch of the threads, and the scale and the triangular mark at the tail end of the screw provide a expansion limit mark, so that an operator can conveniently master the expansion distance;
compared with the prior art, the compression screw can freely change the state of the compression screw, including compression state, opening state, static state and screwing state simultaneously, so that the compression screw can realize opening and compression of fracture parts without replacing auxiliary instruments in actual application, brings convenience to operators, and also avoids pain caused by repeated placement of the instruments to patients.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.
Claims (5)
1. A fracture distracting compression screw comprising: a main pin and an adjusting tail pin;
the main nail is adjusted in the cavity of the adjusting tail nail, and the adjusting tail nail is arranged at the tail end of the main nail; threads are arranged on the outer surface of the main nail and the outer surface of the adjusting tail nail;
the inner side of the adjusting tail nail is provided with annular bulges, annular grooves are formed between the annular bulges, annular clamping grooves are formed in two ends of the annular bulges, rectangular grooves are formed in the side walls of the annular clamping grooves, clamping rings are arranged on the outer side walls of the tail ends of the main nail, and clamping teeth are fixedly arranged at two ends of the clamping rings.
2. The fracture spreading compression screw according to claim 1, wherein the outer side wall of the annular protrusion is a metal reed, four annular grooves are continuously formed, the clamping ring is a rubber clamping ring, the clamping ring is positioned in the middle annular groove in a static state, and the clamping teeth are arranged in the annular clamping groove.
3. A fracture distracting compression screw according to claim 2, wherein the rectangular grooves are circumferentially distributed on the side walls of the annular clamping grooves.
4. The fracture expanding and pressurizing screw as claimed in claim 2, wherein the inner cavity of the adjusting tail screw is further connected with an expanding screw in a threaded mode, the end head of the expanding screw is in conical contact with the inner ring of the clamping ring, and a guide channel is arranged in the inner cavity of the expanding screw.
5. The fracture spreading compression screw according to claim 1, wherein the outer end face of the adjusting tail nail is provided with scales, one side of the tail end of the main nail is fixedly provided with a triangular mark, and the inner cavity of the main nail is provided with a guide channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223066053.2U CN219397511U (en) | 2022-11-18 | 2022-11-18 | Fracture struts compression screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223066053.2U CN219397511U (en) | 2022-11-18 | 2022-11-18 | Fracture struts compression screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219397511U true CN219397511U (en) | 2023-07-25 |
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ID=87208121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223066053.2U Active CN219397511U (en) | 2022-11-18 | 2022-11-18 | Fracture struts compression screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219397511U (en) |
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2022
- 2022-11-18 CN CN202223066053.2U patent/CN219397511U/en active Active
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