CN115399927A - Broken cone extraction instrument and use method thereof - Google Patents
Broken cone extraction instrument and use method thereof Download PDFInfo
- Publication number
- CN115399927A CN115399927A CN202210989654.6A CN202210989654A CN115399927A CN 115399927 A CN115399927 A CN 115399927A CN 202210989654 A CN202210989654 A CN 202210989654A CN 115399927 A CN115399927 A CN 115399927A
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- China
- Prior art keywords
- guide sleeve
- fixer
- nut
- osteotomy
- broken cone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000000605 extraction Methods 0.000 title claims description 9
- 238000005553 drilling Methods 0.000 claims abstract description 24
- 238000010079 rubber tapping Methods 0.000 claims abstract description 15
- 238000004080 punching Methods 0.000 claims abstract description 13
- 210000000988 bone and bone Anatomy 0.000 description 5
- 206010028980 Neoplasm Diseases 0.000 description 1
- 210000003484 anatomy Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007012 clinical effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 210000000629 knee joint Anatomy 0.000 description 1
- 238000013150 knee replacement Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2/461—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of knees
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2002/4619—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof for extraction
- A61F2002/462—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof for extraction of broken endoprosthetic joint parts
Landscapes
- Health & Medical Sciences (AREA)
- Transplantation (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Physical Education & Sports Medicine (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses a broken cone taking-out instrument and a using method thereof, and belongs to the technical field of medical instruments. The method comprises the following specific steps: 1, sleeving a guide sleeve fixer which is adapted to an osteotomy section on the outer side of the guide sleeve fixer; 2, installing a drill guide sleeve above the guide sleeve fixer; 3, using a drill to penetrate through the guide sleeve fixer and the drilling guide sleeve and punching a broken cone in the osteotomy section; 4, after punching, taking out the drill bit, and tapping by using a screw tap; 5, after tapping, removing the drill hole guide sleeve and the guide sleeve fixer; screwing a threaded rod into the threaded hole; 7, mounting a nut on the top of the threaded rod; 8, inserting two inclined ends of the separator wrench into a gap between the osteotomy segment and the rotating nut; and 9, knocking a hammering seat at the tail part of the separator wrench through a hammer, rotating a separator nut until the broken cone is taken out after the broken cone is loosened. The invention can effectively take out the broken cone-matched prosthesis and reduce the time for replacing the prosthesis in the operation.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a broken cone taking-out instrument and a using method thereof.
Background
Knee replacement has started to prevail widely in the late 70 s and early 80 s of the 20 th century and has now become the most effective means of treating end-stage tumors. Like other surgical implants, the first knee prosthesis was designed by a surgical innovator in cooperation with the industry. With the further intensive research on anatomy and biomechanics, with the development of novel materials, the design concept and variety of prostheses are increasing, but the indications and clinical effects of different types of prostheses are also different. Among them, the knee joint prosthesis of the assembled type has become a universal prosthesis which is most widely used. But still has the phenomenon that the assembled cone is broken due to the huge impact in the normal use of the prosthesis, and the prosthesis can not be taken out after being broken.
Disclosure of Invention
In view of this, the present invention provides a broken awl extraction apparatus and a method of using the same. The method can effectively take out the broken cone matched prosthesis, reduce the time for replacing the prosthesis in the operation and reduce the pain of patients.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a broken cone extracting instrument comprises a drilling guide sleeve, a guide sleeve fixer and a screw tap; the guide sleeve fixer is of a cylindrical structure, and a step cavity is formed in the guide sleeve fixer; the lower half part of the guide sleeve fixer is adapted to an osteotomy section locked with the broken cone, and when the guide sleeve fixer is used, the osteotomy section is sleeved in the lower half part of the step cavity; the inner diameter of the upper half part of the step cavity is smaller than that of the lower half part of the step cavity;
the drilling guide sleeve is arranged in the upper half part of the step cavity, and the central axis of the drilling guide sleeve is superposed with the central axis of the guide sleeve fixer; in a use state, the screw tap penetrates through the central axis of the guide sleeve fixer, and the bottom of the screw tap is in threaded connection with a broken screw tap in the osteotomy section; the screw tap is in clearance fit with the drill hole guide sleeve.
Further, in a use state, the bone cutting section is in clearance fit with the lower half part of the step cavity.
Further, the drilling guide sleeve is in clearance fit with the upper half part of the step cavity.
Furthermore, the top of the side wall of the drilling guide sleeve is provided with an outward extension section; the extension section is erected on the top of the guide sleeve fixer.
A use method of the broken cone extracting instrument is used for using the broken cone extracting instrument, and comprises the following steps:
step 8, inserting two inclined ends of the separator wrench into a gap between the osteotomy segment and the rotating nut;
step 9, knocking a hammering seat at the tail part of the separator wrench through a hammer, rotating a separator nut after a broken cone is loosened,
and 10, repeating the step 9 until the broken cone is completely taken out of the osteotomy segment.
Further, the separator wrench in step 8 comprises a driving screw, a driving nut, a fixing bracket and two inclined ends; the oblique cutting surfaces of the two oblique ends are opposite; one inclined end is fixed on the mounting bracket, and the other inclined end is fixed at one end of the driving screw rod; the driving screw penetrates through the long hole in the fixed support and can move along the central axis of the long hole;
the other end of the driving screw rod is provided with a hammering seat; a limiting groove is formed in the port of the long hole in one side of the hammering seat, and the driving nut is restrained in the limiting groove and can rotate along the central axis of the long hole; the driving screw is in threaded connection with the driving nut.
Further, the thread of the driving screw is in clearance fit with the thread of the driving nut, and the clearance is larger than 0.
Furthermore, the outer side of the driving nut is provided with a limiting protrusion, and the limiting protrusion is located in the limiting groove.
Furthermore, a handle is arranged on the fixed support.
The invention adopts the technical scheme to produce the beneficial effects that:
according to the invention, the process of positioning, punching and tapping is adopted in the punching process, the punching position and the tapping position are completely consistent, and the stress effect of taking out the broken cone is improved; the separator wrench is used for separation, the broken cone is slowly pulled out under the torque of the driving nut and the knocking action of the hammer, the pain of a patient is reduced, the prosthesis of the osteotomy segment part does not need to be replaced, and the treatment efficiency is improved.
Drawings
FIG. 1 is a schematic structural view of a broken cone extraction instrument according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a wrench of the decoupler type according to an embodiment of the present invention in an in-use state;
fig. 3 is a schematic structural view of a splitter wrench according to an embodiment of the present invention.
In the figure: 1. the drill bit comprises a screw tap, 21, a drill guide sleeve, 3, a guide sleeve fixer, 4, a broken cone, 5, a bone cutting section, 2, an extension section, 6, a nut, 7, a threaded rod, 81, a fixing support, 82, a driving nut, 83, a driving screw rod, 84, a hammering seat, 85, a limiting groove, 86, a limiting protrusion, 87, a first inclined end, 88 and a second inclined end.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings 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 invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
A broken cone extracting instrument comprises a drilling guide sleeve, a guide sleeve fixer and a screw tap; the guide sleeve fixer is of a cylindrical structure, and a step cavity is formed in the guide sleeve fixer; the lower half part of the guide sleeve fixer is adapted to an osteotomy section locked with the broken cone, and when the guide sleeve fixer is used, the osteotomy section is sleeved in the lower half part of the step cavity; the inner diameter of the upper half part of the step cavity is smaller than that of the lower half part of the step cavity;
the drilling guide sleeve is arranged in the upper half part of the step cavity, and the central axis of the drilling guide sleeve is superposed with the central axis of the guide sleeve fixer; in a use state, the screw tap penetrates through the central axis of the guide sleeve fixer, and the bottom of the screw tap is in threaded connection with a broken screw tap in the osteotomy section; the screw tap is in clearance fit with the drilling guide sleeve.
Further, in a use state, the osteotomy segment is in clearance fit with the lower half part of the step cavity.
Furthermore, the drilling guide sleeve is in clearance fit with the upper half part of the step cavity.
Furthermore, the top of the side wall of the drilling guide sleeve is provided with an outward extension section; the extension section is erected on the top of the guide sleeve fixer.
A use method of the broken cone extracting instrument is used for using the broken cone extracting instrument, and comprises the following steps:
step 8, inserting two inclined ends of the separator wrench into a gap between the osteotomy segment and the rotating nut;
step 9, knocking a hammering seat at the tail part of the separator wrench through a hammer, rotating a separator nut after a broken cone is loosened,
and 10, repeating the step 9 until the broken cone is completely taken out of the osteotomy segment.
Further, the separator wrench in step 8 comprises a driving screw, a driving nut, a fixing bracket and two inclined ends; the oblique cutting surfaces of the two oblique ends are opposite; one inclined end is fixed on the mounting bracket, and the other inclined end is fixed at one end of the driving screw rod; the driving screw penetrates through the long hole in the fixed support and can move along the central axis of the long hole;
the other end of the driving screw rod is provided with a hammering seat; a limiting groove is formed in the port of the long hole in one side of the hammering seat, and the driving nut is restrained in the limiting groove and can rotate along the central axis of the long hole; the driving screw is in threaded connection with the driving nut.
Further, the thread of the driving screw is in clearance fit with the thread of the driving nut, and the clearance is larger than 0.
Furthermore, the outer side of the driving nut is provided with a limiting protrusion, and the limiting protrusion is located in the limiting groove.
Furthermore, a handle is arranged on the fixed support.
The following is a more specific example:
referring to fig. 1, the drill guide sleeve: guiding and positioning the drill bit and tap during drilling and reaming
The guide sleeve fixer: the sleeve is sleeved on the broken cone side of the osteotomy segment, and the osteotomy segment is fixed to act as a drill hole guide sleeve;
a screw tap: tapping after drilling;
cone breaking: the cone-matched prosthesis broken by impact cannot be pulled out;
cutting a bone section: a fabricated prosthesis;
firstly, a guide sleeve fixer is arranged on the broken cone side of the osteotomy section, and then the drill guide sleeve is inserted into the guide sleeve fixer. And (4) drilling the broken cone by using a drill bit, and tapping by using a screw tap after the broken cone is drilled to a proper depth.
With reference to figure 2 of the drawings,
nut: reach the distance threaded rod that is fit for the split of separator spanner through control swivel nut: one side is screwed into the broken cone after tapping, and the other side is provided with a rotating nut.
A separator wrench: the gap between the osteotomy segment and the rotating nut is extruded through the inclined end of the separator wrench, so that the fracture cone is pulled out of the osteotomy segment.
Driving the nut: and adjusting the telescopic distance of the inclined plane of the separator.
And secondly, after the broken cone taps the thread, taking down the drill hole guide sleeve and the guide sleeve fixer. One side of the link threaded rod is screwed into the broken cone, the rotary nut is screwed to a proper distance away from the bone cutting section, an inclined plane on one side of the separator wrench is placed into the gap, the inclined plane on the other side enters the deepest part of the gap by rotating the separator nut, the hammer is used for hammering a striker of the separator, and the broken cone can be taken out of the bone cutting section.
The specific complete operation steps are as follows:
step 8, inserting two inclined ends of the separator wrench into a gap between the osteotomy segment and the rotating nut;
step 9, knocking a hammering seat at the tail part of the separator wrench through a hammer, rotating a separator nut after a broken cone is loosened,
and 10, repeating the step 9 until the broken cone is completely taken out of the osteotomy segment.
Referring to fig. 3, the structure of the separator wrench specifically includes a driving screw, a driving nut, a fixing bracket, and two inclined ends; the oblique cutting surfaces of the two oblique ends are opposite; one inclined end is fixed on the mounting bracket, and the other inclined end is fixed at one end of the driving screw rod; the driving screw penetrates through the long hole in the fixed support and can move along the central axis of the long hole;
the other end of the driving screw rod is provided with a hammering seat; a limiting groove is formed in the port of the long hole in one side of the hammering seat, and the driving nut is restrained in the limiting groove and can rotate along the central axis of the long hole; the driving screw is in threaded connection with the driving nut.
The thread of the driving screw is in clearance fit with the thread of the driving nut, and the clearance is larger than 0; after the driving nut is in threaded connection with the driving screw rod, the driving nut can rock along the central axis of the long hole.
The outer side of the driving nut is provided with a limiting bulge, and the limiting bulge is located in the limiting groove. The fixed support is provided with a handle. The handle is provided with a lightening hole.
Claims (9)
1. A broken cone extracting instrument is characterized by comprising a drilling guide sleeve, a guide sleeve fixer and a screw tap; the guide sleeve fixer is of a cylindrical structure, and a step cavity is formed in the guide sleeve fixer; the lower half part of the guide sleeve fixer is adapted to an osteotomy section locked with the broken cone, and when the guide sleeve fixer is used, the osteotomy section is sleeved in the lower half part of the step cavity; the inner diameter of the upper half part of the step cavity is smaller than that of the lower half part of the step cavity;
the drilling guide sleeve is arranged in the upper half part of the step cavity, and the central axis of the drilling guide sleeve is superposed with the central axis of the guide sleeve fixer; in a use state, the screw tap penetrates through the central axis of the guide sleeve fixer, and the bottom of the screw tap is in threaded connection with a broken screw tap in the osteotomy section; the screw tap is in clearance fit with the drill hole guide sleeve.
2. A broken cone extraction instrument according to claim 1, wherein in use the osteotomy segment is in clearance fit with the lower half of the stepped cavity.
3. A disconnected cone extraction instrument according to claim 1, wherein the drill guide sleeve is in clearance fit with the upper half of the stepped cavity.
4. The disconnected cone extracting instrument as claimed in claim 1, wherein the top of the side wall of the drill guide sleeve is provided with an outward extension; the extension section is erected on the top of the guide sleeve fixer.
5. A method for using the broken cone extraction instrument as claimed in any one of claims 1 to 4, comprising the following steps:
step 1, sleeving a guide sleeve fixer adapted to an osteotomy section on the outer side of the guide sleeve fixer;
step 2, installing a drill guide sleeve above the guide sleeve fixer;
step 3, using a drill to penetrate through the guide sleeve fixer and the drilling guide sleeve, and punching a broken cone in the osteotomy section;
step 4, after punching, taking out the drill bit, and using a screw tap for tapping;
step 5, after tapping, removing the drill hole guide sleeve and the guide sleeve fixer;
step 6, screwing a threaded rod into the threaded hole;
step 7, mounting a nut on the top of the threaded rod, wherein the nut and the osteotomy segment have a distance;
step 8, inserting two inclined ends of the separator wrench into a gap between the osteotomy segment and the rotating nut;
step 9, knocking a hammering seat at the tail part of the separator wrench through a hammer, rotating a separator nut after a broken cone is loosened,
and 10, repeating the step 9 until the broken cone is completely taken out of the osteotomy segment.
6. The method of using a disconnected cone extraction instrument according to claim 5, wherein the distractor wrench of step 8 comprises a drive screw, a drive nut, a fixed bracket, and two angled ends; the oblique cutting surfaces of the two oblique ends are opposite; one inclined end is fixed on the mounting bracket, and the other inclined end is fixed at one end of the driving screw rod; the driving screw penetrates through the long hole in the fixed support and can move along the central axis of the long hole;
the other end of the driving screw rod is provided with a hammering seat; a limiting groove is formed in the port of the long hole in one side of the hammering seat, and the driving nut is restrained in the limiting groove and can rotate along the central axis of the long hole; the driving screw is in threaded connection with the driving nut.
7. The method of using a disconnected cone extraction instrument according to claim 6, wherein the threads of the drive screw and the threads of the drive nut are clearance fit, and the clearance is greater than 0.
8. The use method of the broken cone extraction instrument as claimed in claim 6, wherein a limiting protrusion is arranged on the outer side of the driving nut, and the limiting protrusion is located in a limiting groove.
9. The method of claim 6, wherein the fixed support has a handle thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210989654.6A CN115399927A (en) | 2022-08-18 | 2022-08-18 | Broken cone extraction instrument and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210989654.6A CN115399927A (en) | 2022-08-18 | 2022-08-18 | Broken cone extraction instrument and use method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115399927A true CN115399927A (en) | 2022-11-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210989654.6A Pending CN115399927A (en) | 2022-08-18 | 2022-08-18 | Broken cone extraction instrument and use method thereof |
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| Country | Link |
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| CN (1) | CN115399927A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010005786A1 (en) * | 1989-04-24 | 2001-06-28 | Gary Michelson | Surgical rongeur |
| CN2832063Y (en) * | 2005-05-10 | 2006-11-01 | 韩勇 | Practical adjustable cannula type cranial prick |
| CN201299670Y (en) * | 2008-12-03 | 2009-09-02 | 徐辉 | A femoral prosthesis handle extractor |
| US20150282816A1 (en) * | 2014-04-04 | 2015-10-08 | H & M Innovations, Llc | Collecting and harvesting cut bone from kerrison rongeur |
| CN204765895U (en) * | 2015-06-26 | 2015-11-18 | 北华大学 | Orthopedics set screw follows closely extractor absolutely |
| CN109276306A (en) * | 2018-11-05 | 2019-01-29 | 中国人民解放军第二军医大学第二附属医院 | A kind of withdrawing device of depth fracture bone nail |
| US20210282939A1 (en) * | 2020-03-12 | 2021-09-16 | Mark B. Wright | Prosthesis extraction apparatus |
-
2022
- 2022-08-18 CN CN202210989654.6A patent/CN115399927A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010005786A1 (en) * | 1989-04-24 | 2001-06-28 | Gary Michelson | Surgical rongeur |
| CN2832063Y (en) * | 2005-05-10 | 2006-11-01 | 韩勇 | Practical adjustable cannula type cranial prick |
| CN201299670Y (en) * | 2008-12-03 | 2009-09-02 | 徐辉 | A femoral prosthesis handle extractor |
| US20150282816A1 (en) * | 2014-04-04 | 2015-10-08 | H & M Innovations, Llc | Collecting and harvesting cut bone from kerrison rongeur |
| CN204765895U (en) * | 2015-06-26 | 2015-11-18 | 北华大学 | Orthopedics set screw follows closely extractor absolutely |
| CN109276306A (en) * | 2018-11-05 | 2019-01-29 | 中国人民解放军第二军医大学第二附属医院 | A kind of withdrawing device of depth fracture bone nail |
| US20210282939A1 (en) * | 2020-03-12 | 2021-09-16 | Mark B. Wright | Prosthesis extraction apparatus |
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