CN112168282B - Marrow cavity focus reducing scraping device - Google Patents
Marrow cavity focus reducing scraping device Download PDFInfo
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- CN112168282B CN112168282B CN202011047035.2A CN202011047035A CN112168282B CN 112168282 B CN112168282 B CN 112168282B CN 202011047035 A CN202011047035 A CN 202011047035A CN 112168282 B CN112168282 B CN 112168282B
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- stretching rod
- scraping
- long cylinder
- guide hole
- cylinder body
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- 238000007790 scraping Methods 0.000 title claims abstract description 75
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 230000003902 lesion Effects 0.000 claims description 10
- 238000005507 spraying Methods 0.000 claims description 7
- 210000001185 bone marrow Anatomy 0.000 claims description 6
- 238000000034 method Methods 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 208000015181 infectious disease Diseases 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/22—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses a marrow cavity focus reducing scraping device, which comprises a long cylinder body extending into a marrow cavity, wherein the upper end of the long cylinder body is connected with a holding plate positioned outside the marrow cavity, a guide column is arranged above the holding plate, and a guide hole is formed in the guide column; the long cylinder is close to the lower part and is evenly provided with the cursory strip that can bend along the circumference, the bottom of the long cylinder is the arc bottom that outwards extrudes, and this arc bottom sets up to the friction surface. This scraping device stretches into the marrow intracavity and can effectually pass narrow portion, thereby can make the scraping strip crooked through tensile first tensile pole when scraping the focus, enlarged the movable diameter of scraping the strip promptly to can be effectual clear away fast comprehensively to the focus.
Description
Technical Field
The invention relates to the field of orthopedics, in particular to a marrow cavity focus reducing scraping device.
Background
Clinically, patients with marrow cavity infection of long bones of limbs are frequently encountered, particularly the infection after the intramedullary needle fixation of fracture of the long bones of the limbs, and the infected sections in the marrow cavity of the patients are longer and even diffuse into the whole marrow cavity. There are currently two treatments for such patients to clear the infected lesion 1 in the bone marrow cavity, using a fenestrated curettage to clear the lesion. This method requires a long segment window on the backbone, affecting the firmness of the backbone. 2. The focus was removed using a medullary cavity file. Because the thickness of each section of the marrow cavity is different, the difference between the narrow part of the marrow cavity and the enlarged part of the marrow cavity is larger, and the narrow part can not pass through if a rasp is used; the enlarged portion of the medullary cavity cannot be removed with a fine file. Neither of these two methods is effective in removing the intramedullary canal lesions.
Disclosure of Invention
The present invention is directed to solve the above problems and to provide a scraping device for reducing the diameter of a lesion in a bone marrow cavity, which can effectively scrape the lesion in the bone marrow cavity.
The invention realizes the purpose through the following technical scheme:
the marrow cavity focus reducing scraping device comprises a long cylinder body extending into a marrow cavity, wherein the upper end of the long cylinder body is connected with a holding plate positioned outside the marrow cavity, a guide column is arranged above the holding plate, and a guide hole is formed in the guide column;
a plurality of bendable scraping strips are uniformly formed on the lower part of the long cylinder body close to the circumference, the bottom of the long cylinder body is an arc-shaped bottom protruding outwards, and the arc-shaped bottom is arranged as a friction surface;
a first stretching rod and a second stretching rod are arranged in the long cylinder body; the upper part of the first stretching rod passes through the first guide hole and extends to the outside of the guide post, and a limiting tangent plane is formed on the side surface of the first stretching rod and matched with the first guide hole so as to prevent the first stretching rod from rotating during stretching. The upper end of the first stretching rod is connected with a handle, and the lower end of the first stretching rod is fixedly connected with a limiting boss; the second stretching rod is fixedly connected with the bottom of the long cylinder body, the interior of the second stretching rod is of a hollow structure, a second guide hole is formed in the upper end of the second stretching rod, the second guide hole is communicated with the hollow structure, and the lower end of the second guide hole is formed into a positioning step; the first stretching rod penetrates through the second guide hole to extend into the hollow structure, a spring is arranged between the limiting boss and the positioning step, the spring is provided with an initial elastic value, when the limiting boss slides to the lowest end of the hollow structure, the initial position is achieved, and the spring is in a compressed state.
When the focus scraping device is used, the initial state of the scraping strip is close to the stretching state, the scraping strip and the long cylinder body penetrate through a marrow cavity to reach the position of a focus, at the moment, the first stretching rod is stretched, the spring between the limiting boss and the positioning step further exerts force on the second stretching rod, and the second stretching rod stretches upwards slowly, so that the scraping strip is stressed, the scraping strips begin to bend slowly to form an oval shape, namely, the diameter range of the scraped focus is expanded, and the focus can be effectively scraped.
As an important technical scheme, a plurality of water spraying holes are formed in the second stretching rod close to the lower part, and the water spraying holes correspond to the gaps between two adjacent scraping strips when the scraping strips are compressed and expanded; a water inlet channel is formed in the first stretching rod and penetrates through the upper end and the lower end of the first stretching rod, and the upper end of the water inlet channel is connected with a water pipe through a connector.
Furthermore, the length of the scraping strip is 3cm-5cm, the width of the scraping strip is 2mm-3mm, and a plurality of friction strips are arranged on the surface of the scraping strip.
Furthermore, the friction surface of the arc-shaped bottom is a net-shaped friction surface formed by a plurality of friction marks.
Furthermore, one side of the guide post is also provided with a locking screw, and when the first stretching rod is stretched to a certain length, the locking screw can be rotated to be matched with the limiting tangent plane to fix the first stretching rod at a certain position.
Further, the length of the second stretching rod is greater than that of the scraping strip.
Furthermore, the left side and the right side of the inner side surface of the scraping strip are provided with inclined cutting planes, and the left side and the right side of the scraping strip form bent sharp edges when the scraping strip is bent.
Has the advantages that: this scraping device stretches into the marrow intracavity and can effectually pass narrow portion, thereby can make the scraping strip crooked through tensile first tensile pole when scraping the focus, enlarged the movable diameter of scraping the strip promptly to can be effectual clear away fast comprehensively to the focus.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a front view of the present invention in use;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is an isometric view of FIG. 1;
FIG. 4 is a left side view of FIG. 1;
FIG. 5 is a bottom view of FIG. 1;
FIG. 6 is a front view of the initial state of the present invention;
fig. 7 is a structural view of the wiper strip of the present invention.
The reference numerals are explained below:
1. a long cylinder; 2. a first stretching rod; 2a water inlet channel; 2b, a limiting boss; 2c, limiting the tangent plane; 3. a second stretch rod; 3a, positioning steps; 3b, a second guide hole; 3c, water spraying holes; 4. holding the plate; 5. a guide post; 5a, a first guide hole; 6. a handle; 7. a spring; 8. scraping the strips; 8a, a chamfer surface; 9. an arc-shaped bottom; 9b, a friction surface; 10. and locking the screw.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Referring to fig. 1 to 7, the present invention provides a marrow cavity lesion reducing scraping device, which comprises a long cylinder 1 extending into a marrow cavity, wherein the upper end of the long cylinder 1 is connected with a holding plate 4 located outside the marrow cavity, a guide post 5 is arranged above the holding plate 4, and a first guide hole 5a is arranged inside the guide post 5. The long cylinder body 1 is close to the lower portion, a plurality of flexible scraping strips 8 are evenly formed along the circumference, and the initial state of the scraping strips 8 is slightly bent outwards. Preferably, the length of the scraping strip 8 is 3cm-5cm, the width is 2mm-3mm, the surface of the scraping strip 8 is further provided with a plurality of friction strips, the left side and the right side of the inner side surface of the scraping strip 8 are provided with chamfer planes 8a, and the left side and the right side of the scraping strip 8 form bent sharp edges when the scraping strip 8 is bent (as shown in fig. 7). The scraping strip 8 and the long cylinder body 1 can be formed at one time, and can also be fixedly connected with the long cylinder body 1 in a welding mode, when the scraping device stretches into the focus position, the driving scraping strip 8 is bent to effectively and comprehensively scrape the focus, moreover, the oblique section 8a of the inner side surface of the scraping strip 8 can form a sharp edge in a bent state, and an operator can rotate the scraping device to more effectively and quickly scrape the focus completely.
The bottom of the long cylinder body 1 is an arc-shaped bottom 9 protruding outwards, and the arc-shaped bottom 9 is arranged as a friction surface 9 b; the friction surface 9b is a reticular friction surface 9b formed by a plurality of friction marks, a focus can be diffused at any part of the marrow cavity or the bottom of the marrow cavity, the focus at the bottom is difficult to scrape clean by adopting a file or a spatula at present, and the reticular friction surface 9b is arranged at the bottom (as shown in figure 5), so that the focus at the bottom of the marrow cavity can be effectively scraped.
A first stretching rod 2 and a second stretching rod 3 are arranged in the long cylinder body 1, and the first stretching rod 2 and the second stretching rod 3 are coaxial; the upper part of the first stretching rod 2 passes through a first guide hole 5a and extends to the outside of a guide post 5, a limiting tangent plane 2c is formed on the side surface of the first stretching rod 2, the limiting tangent plane 2c is matched with the first guide hole 5a, the upper end of the first stretching rod 2 is connected with a handle 6, and the lower end of the first stretching rod 2 is fixedly connected with a limiting boss 2 b; the second stretching rod 3 is fixedly connected with the bottom of the long cylinder body 1, the inside of the second stretching rod is of a hollow structure, a second guide hole 3b is formed in the upper end of the second stretching rod 3, the second guide hole 3b is communicated with the hollow structure, the lower end of the second guide hole is formed into a positioning step 3a, and further the length of the second stretching rod is larger than that of the scraping strip 8. The first stretching rod 2 penetrates through the second guide hole 3b and extends into the hollow structure, the first stretching rod 2 is in sliding fit with the second guide hole 3b, a spring 7 is arranged between the limiting boss 2b and the positioning step 3a, the spring 7 is provided with an initial elastic value, when the limiting boss 2b slides to the lowest end of the hollow structure, the initial position is achieved, and the spring 7 is in a compressed state.
In the initial state of the focus scraping device, the scraping strip 8 is nearly in an extended state (slightly bent outward), the limit boss 2b of the first stretching rod 2 is positioned at the bottom of the hollow structure of the second stretching rod 3, and at this time, the spring 7 is in a compressed state. And because spring 7 is the compression state, the spacing boss 2b of first tensile pole 2 is located the bottom of the hollow structure of second tensile pole 3, and the scraping strip 8 presents the slightly crooked state and can not straighten by virtue of self elasticity, and this structure can make scraping strip 8 outwards crooked easily when the scraping device uses.
Specifically, the scraping strip 8 and the long cylinder 1 together pass through the marrow cavity to the focus position, at this time, the first stretching rod 2 is slowly stretched upwards, the spring 7 between the limiting boss 2b and the positioning step 3a further forms acting force on the second stretching rod 3, the second stretching rod 3 is slowly stretched upwards relatively, so that the scraping strip 8 is stressed, as the force applied by the spring 7 to the second stretching rod 3 is increased, the scraping strips 8 begin to bend greatly and slowly form an oval shape, namely the diameter range of the scraped focus is enlarged, when the scraping strip 8 contacts the inner wall of the marrow cavity, namely the scraping strip 8 reaches the maximum bending range at this time, the scraping strip can react on the second stretching rod 3, because of the existence of the spring 7, the scraping strip 8 has a buffering function, no harm is caused to the inner wall of the marrow cavity, and then the operating doctor tries to rotate the long cylinder 1, when the scraping strip 8 is sensed to scrape the inner focus, the locking screw 10 is adopted to lock the first stretching rod at a fixed position, and then the long cylinder body 1 is continuously rotated to scrape the focus. In the scraping process, because the first stretching rod 2 is locked, the scraping strip 8 still has a small buffer when contacting with the focus, thereby avoiding unnecessary damage to the inner wall of the marrow cavity.
In the initial state, a certain distance is provided between two adjacent scrapers 8, and the diameter of the cylinder formed by the plurality of scrapers 8 is substantially the same as the diameter of the long cylinder 1, so that the narrow portion of the medullary cavity can be more easily passed.
As a preferred embodiment of the present invention, a plurality of water spraying holes 3c are provided near the lower portion of the second stretching rod 3, each water spraying hole 3c is provided with an atomizing nozzle, and the water spraying holes 3c correspond to the gap between two adjacent scrapers 8 when the scrapers 8 are compressed and expanded; a water inlet channel 2a is formed in the first stretching rod 2, the water inlet channel 2a penetrates through the upper end and the lower end of the first stretching rod 2, and the upper end of the water inlet channel 2a is connected with a water pipe through a joint. Through inhalant canal 2a and water piping connection, can strike off the focus and wash by water to the focus position when scraping off the focus, scrape off cleaner. When the water is flushed, the hollow structure of the second stretching rod 3 is filled with water.
Further, a locking screw 10 is further disposed on one side of the guide post 5, and when the first stretching rod 2 is stretched to a certain length, the locking screw 10 is rotated to be capable of being matched with the limiting tangent plane 2c, so that the first stretching rod 2 is fixed at a certain position.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (5)
1. Marrow cavity focus reducing scraping device, its characterized in that: the bone marrow taking device comprises a long cylinder body extending into a bone marrow cavity, wherein the upper end of the long cylinder body is connected with a holding plate positioned outside the bone marrow cavity, a guide post is arranged above the holding plate, and a guide hole is formed in the guide post;
a plurality of bendable scraping strips are uniformly formed on the lower part of the long cylinder body close to the circumference, the bottom of the long cylinder body is an arc-shaped bottom protruding outwards, and the arc-shaped bottom is arranged as a friction surface;
a first stretching rod and a second stretching rod are arranged in the long cylinder body; the upper part of the first stretching rod penetrates through the first guide hole and extends to the outside of the guide post, a limiting tangent plane is formed on the side surface of the first stretching rod and matched with the first guide hole, the upper end of the first stretching rod is connected with a handle, and the lower end of the first stretching rod is fixedly connected with a limiting boss; the second stretching rod is fixedly connected with the bottom of the long cylinder body, the interior of the second stretching rod is of a hollow structure, a second guide hole is formed in the upper end of the second stretching rod, the second guide hole is communicated with the hollow structure, and the lower end of the second guide hole is formed into a positioning step; the first stretching rod penetrates through the second guide hole to extend into the hollow structure, a spring is arranged between the limiting boss and the positioning step, the spring is provided with an initial elastic value, and when the limiting boss slides to the lowest end of the hollow structure, the spring is in a compressed state;
a plurality of water spraying holes are formed in the second stretching rod close to the lower part, and correspond to the gap between every two adjacent scraping strips when the scraping strips are compressed and expanded; a water inlet channel is formed in the first stretching rod and penetrates through the upper end and the lower end of the first stretching rod, and the upper end of the water inlet channel is connected with a water pipe through a joint;
the length of the second stretching rod is greater than that of the scraping strip.
2. The intramedullary canal lesion reducing scraping device of claim 1, wherein: the length of the scraping strip is 3cm-5cm, the width of the scraping strip is 2mm-3mm, and a plurality of friction strips are arranged on the surface of the scraping strip.
3. The intramedullary canal lesion reducing scraping device of claim 1, wherein: the friction surface of the arc-shaped bottom is a net-shaped friction surface formed by a plurality of friction marks.
4. The intramedullary canal lesion reducing scraping device of any one of claims 1 to 3, wherein: and when the first stretching rod is stretched to a certain length, the locking screw can be rotated to be matched with the limiting tangent plane to fix the first stretching rod at a certain position.
5. The intramedullary canal lesion reducing scraping device of claim 1, wherein: the left side and the right side of the inner side surface of the scraping strip are formed with inclined cutting planes, and the left side and the right side of the scraping strip form bent sharp edges when the scraping strip is bent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011047035.2A CN112168282B (en) | 2020-09-29 | 2020-09-29 | Marrow cavity focus reducing scraping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011047035.2A CN112168282B (en) | 2020-09-29 | 2020-09-29 | Marrow cavity focus reducing scraping device |
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| Publication Number | Publication Date |
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| CN112168282A CN112168282A (en) | 2021-01-05 |
| CN112168282B true CN112168282B (en) | 2022-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011047035.2A Expired - Fee Related CN112168282B (en) | 2020-09-29 | 2020-09-29 | Marrow cavity focus reducing scraping device |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103298420A (en) * | 2010-11-15 | 2013-09-11 | 脊柱诊察公司 | Tissue removal system with retention mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5219518B2 (en) * | 2004-12-09 | 2013-06-26 | ザ ファウンドリー， エルエルシー | Aortic valve repair |
| US8109957B2 (en) * | 2006-06-30 | 2012-02-07 | Depuy Spine, Inc. | Disc nucleus removal devices and methods |
| CN106264664A (en) * | 2016-07-20 | 2017-01-04 | 南宁博锐医院有限公司 | Thread associating Wicresoft of halieutics two mirror protects the liver liver inside and outside bile duct stone rubble lithotomy |
| CN211131254U (en) * | 2019-02-02 | 2020-07-31 | 张嘉 | Take orthopedics sacculus and orthopedics sacculus equipment of sawtooth cable |
| CN110711010B (en) * | 2019-11-11 | 2025-06-24 | 宁波华科润生物科技有限公司 | An expandable height-adjustable scraper |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103298420A (en) * | 2010-11-15 | 2013-09-11 | 脊柱诊察公司 | Tissue removal system with retention mechanism |
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| CN112168282A (en) | 2021-01-05 |
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Granted publication date: 20220415 |