CN111513897A - Minimally invasive implantation tool suitable for memory alloy orthopedic implant - Google Patents
Minimally invasive implantation tool suitable for memory alloy orthopedic implant Download PDFInfo
- Publication number
- CN111513897A CN111513897A CN202010383836.XA CN202010383836A CN111513897A CN 111513897 A CN111513897 A CN 111513897A CN 202010383836 A CN202010383836 A CN 202010383836A CN 111513897 A CN111513897 A CN 111513897A
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- sleeve
- memory alloy
- minimally invasive
- axial
- implantation tool
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- 238000002513 implantation Methods 0.000 title claims abstract description 29
- 239000007943 implant Substances 0.000 title claims abstract description 28
- 229910001285 shape-memory alloy Inorganic materials 0.000 title claims abstract description 24
- 230000000399 orthopedic effect Effects 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000001816 cooling Methods 0.000 claims abstract description 11
- 238000005452 bending Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 239000000956 alloy Substances 0.000 abstract description 5
- 210000000988 bone and bone Anatomy 0.000 description 6
- 239000011229 interlayer Substances 0.000 description 5
- 239000010410 layer Substances 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001338 necrotic effect Effects 0.000 description 2
- 229910001000 nickel titanium Inorganic materials 0.000 description 2
- 239000004480 active ingredient Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036770 blood supply Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000302 ischemic effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000017074 necrotic cell death Effects 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
-
- 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
- A61F2/4607—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 hip femoral endoprostheses
-
- 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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
- A61F2002/3006—Properties of materials and coating materials
- A61F2002/30092—Properties of materials and coating materials using shape memory or superelastic materials, e.g. nitinol
-
- 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
- A61F2002/4653—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor using cooling means
-
- 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
- A61F2002/4687—Mechanical guides for implantation instruments
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)
- Prostheses (AREA)
Abstract
The invention discloses a minimally invasive implantation tool suitable for memory alloy orthopedic implants, which comprises a sleeve, wherein the sleeve is provided with a pushing mechanism used for pushing the orthopedic implants to move along the axial direction of the sleeve; a water cooling structure is arranged in the side wall of the sleeve, and a water inlet and a water outlet of the water cooling structure are both positioned at the lower part of the sleeve. The invention can ensure the smooth implantation of the orthopedic implant made of the memory alloy material, and avoid the situation that the orthopedic implant begins to recover the shape when not reaching the preset position due to the temperature in the implantation process, so that the implantation position is inaccurate and even the implantation can not be finished.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a minimally invasive implantation tool suitable for memory alloy orthopedic implants.
Background
The ischemic necrosis of the bone is a common disease and a frequently encountered disease in orthopedics, the active ingredients of the bone can be dead due to the blood supply damage of the bone caused by various reasons, and the body mainly absorbs the necrotic trabecula bone in the early stage in the process of repairing the necrotic area of the bone, so that the collapse area is more fragile.
One of the existing treatment methods is to support the device by a support device.
Some existing supporting devices adopt memory alloy materials, for example, patent application (application number: 201110161085.8) discloses a nickel-titanium memory alloy umbrella-titanium cage femoral head internal supporter which is composed of a nickel-titanium memory alloy umbrella, a TA2 pure titanium supporter body and a TA2 pure titanium tail fastening screw, can contain bone materials or production factors, and can automatically increase the supporting area after being implanted.
Another example is the patent application (application No. 201020641438.5) which discloses an umbrella-shaped memory alloy femoral head supporter, which is composed of 8 supporting ribs.
For the orthopedic implant made of the memory alloy material, in the implantation process, due to the temperature, the orthopedic implant can begin to recover the shape when not reaching the preset position, so that the implantation position is inaccurate or even the implantation can not be completed.
Disclosure of Invention
The invention aims to provide a minimally invasive implantation tool suitable for memory alloy orthopedic implants, which can ensure the smooth implantation of the orthopedic implants made of memory alloy materials and avoid the situation that the orthopedic implants begin to recover form when not reaching a preset position due to temperature in the implantation process, so that the implantation position is inaccurate and even the implantation cannot be completed.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
the invention discloses a minimally invasive implantation tool suitable for memory alloy orthopedic implants, which comprises a sleeve, wherein the sleeve is provided with a pushing mechanism used for pushing the orthopedic implants to move along the axial direction of the sleeve; a water cooling structure is arranged in the side wall of the sleeve, and a water inlet and a water outlet of the water cooling structure are both located at the lower portion of the sleeve.
Preferably, the pushing mechanism comprises a sliding block, a screw rod and a cap body, the sliding block is in axial sliding fit with the inner wall of the sleeve, a pit is formed in the lower end of the sliding block, the front end of the screw rod is matched with the pit, the cap body is in threaded connection with the lower end of the sleeve, a threaded through hole A is formed in the center of the cap body, and the screw rod is in threaded fit with the threaded through hole A.
Further, the inner wall of the sleeve is provided with an axial guide groove, the axial guide groove penetrates through the lower end of the sleeve, the axial guide groove does not penetrate through the upper end of the sleeve, and the side wall of the sliding block is provided with a guide projection adapted to the axial guide groove.
Furthermore, pushing mechanism still includes the guide block, the guide block suit is in the sleeve, and the guide block center is equipped with screw through-hole B, screw rod and screw through-hole B screw-thread fit, and the guide block outer wall is equipped with the anti-protruding corrugated of preventing with axial guide slot adaptation.
Preferably, the upper end of the sliding block is an arc surface.
Preferably, the water-cooling structure is including being located the intermediate layer of telescopic lateral wall, be equipped with axial baffle in the intermediate layer, axial baffle is cut apart into water district and play pool with the lower part of intermediate layer, the water inlet is located into water district, the delivery port is located out pool, interbedded top intercommunication.
Furthermore, a locking mechanism is arranged between the cap body and the sleeve, and the locking mechanism is a buckle.
The invention has the following beneficial effects:
1. the invention can ensure the smooth implantation of the orthopedic implant made of the memory alloy material, and avoid the situation that the orthopedic implant begins to recover the shape when not reaching the preset position due to the temperature in the implantation process, so that the implantation position is inaccurate and even the implantation can not be finished.
2. The invention has simple and reliable structure and convenient operation.
3. The invention is provided with the guide mechanism, the anti-rotation mechanism and the locking mechanism, and can further ensure the operation stability in the implantation process.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a partial expanded view of the inner wall of the sleeve;
FIG. 3 is a radial cross-sectional view of the sleeve;
FIG. 4 is an axial cross-sectional view of the sleeve;
in the figure: 1-memory alloy orthopaedic implant, 2-sleeve, 21-sleeve external thread, 22-water inlet, 23-water outlet, 24-interlayer, 25-axial partition, 26-axial guide groove, 3-sliding block, 31-cambered surface, 32-pit, 33-guiding corrugated, 4-screw, 41-screw external thread, 42-nut, 5-guide block, 51-internal thread of threaded through hole B, 52-anti-rotation corrugated, 6-cap, 61-internal thread of cap, 62-groove, 63-internal thread of threaded through hole A, 7-clamping strip and 71-protrusion.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings.
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the minimally invasive implanting tool for memory alloy orthopedic implants disclosed by the invention comprises a sleeve 2, wherein the sleeve 2 is provided with a pushing mechanism for pushing the orthopedic implants to move along the axial direction of the sleeve 2; the pushing mechanism comprises a sliding block 3, a screw rod 4 and a cap body 6, the sliding block 3 is in axial sliding fit with the inner wall of the sleeve 2, the upper end of the sliding block is an arc surface 31, the lower end of the sliding block 3 is provided with a pit 32, the front end of the screw rod 4 is matched with the pit 32, the cap body 6 is in threaded connection with the lower end of the sleeve 2, specifically, the cap body 6 is provided with a cap body internal thread 61, and the lower end of the sleeve 2 is provided with a sleeve external; a threaded through hole A is formed in the center of the cap body 6, the screw rod 4 is in threaded fit with the threaded through hole A, and specifically, the screw rod external thread 41 of the screw rod 4 is matched with the internal thread 63 of the threaded through hole A; the inner wall of the sleeve 2 is provided with an axial guide groove 26, the axial guide groove 26 penetrates the lower end of the sleeve 2, the axial guide groove 26 does not penetrate the upper end of the sleeve 2, and the side wall of the sliding block 3 is provided with a guide rib 33 adapted to the axial guide groove 26.
The pushing mechanism further comprises a guide block 5, the guide block 5 is sleeved in the sleeve 2, a threaded through hole B is formed in the center of the guide block 5, the screw is in threaded fit with the threaded through hole B, specifically, the external screw thread 41 of the screw 4 is matched with the internal screw thread 51 of the threaded through hole B, and the outer wall of the guide block 5 is provided with an anti-bending corrugated rib 52 matched with the axial guide groove 26.
Of course, there may be a plurality of axial guide grooves 26, guide ribs 33, and anti-bending ribs 52.
A locking mechanism is arranged between the cap body and the sleeve, and the locking mechanism is a buckle; specifically, the buckle includes the card strip 7 with sleeve 2 swing joint, is equipped with arch 71 on the card strip 7, and the cap body 6 is equipped with recess 62, and arch 71 and recess 62 block.
The water cooling structure is arranged in the side wall of the sleeve 2, a water inlet 22 and a water outlet 23 of the water cooling structure are both located at the lower portion of the sleeve 2, the water cooling structure further comprises an interlayer 24 located in the side wall of the sleeve 2, an axial partition plate 25 is arranged in the interlayer 24, the lower portion of the interlayer 24 is divided into a water inlet area and a water outlet area by the axial partition plate 25, the water inlet 22 is located in the water inlet area, the water outlet 23 is located in the water outlet area, and the top of the interlayer 24.
The using method of the invention is as follows: the sleeve 2 is filled with cold water, the memory alloy orthopaedics implant 1 and the sliding block 3 which are in a compression state are sequentially placed into the sleeve 2, the screw rod 4 sequentially penetrates through the cap body 6 and the guide block 5 and then is inserted into the sleeve 2, the cap body 6 is screwed and sleeved on the sleeve 2, then the nut 42 of the screw rod 4 is screwed, the front end of the screw rod 4 is inserted into the pit 32, the sleeve is inserted into an installation position, the nut 42 is further screwed, and the memory alloy orthopaedics implant 1 is pushed to the installation position.
In order to prevent the cap body 6 from loosening, the cap body 6 can be locked on the sleeve 2 through the buckle 7.
The present invention is capable of other embodiments, and various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention.
Claims (7)
1. A minimally invasive implantation tool suitable for memory alloy orthopedic implants is characterized in that: the sleeve is provided with a pushing mechanism for pushing orthopedic implants to move along the axial direction of the sleeve; a water cooling structure is arranged in the side wall of the sleeve, and a water inlet and a water outlet of the water cooling structure are both located at the lower portion of the sleeve.
2. The minimally invasive implantation tool according to claim 1, wherein: the pushing mechanism comprises a sliding block, a screw rod and a cap body, the sliding block is in axial sliding fit with the inner wall of the sleeve, a pit is formed in the lower end of the sliding block, the front end of the screw rod is matched with the pit, the cap body is in threaded connection with the lower end of the sleeve, a threaded through hole A is formed in the center of the cap body, and the screw rod is in threaded fit with the threaded through hole A.
3. The minimally invasive implantation tool suitable for memory alloy orthopaedic implants according to claim 2, characterized in that: the inner wall of the sleeve is provided with an axial guide groove, the axial guide groove penetrates through the lower end of the sleeve and does not penetrate through the upper end of the sleeve, and the side wall of the sliding block is provided with guide ribs matched with the axial guide groove.
4. The minimally invasive implantation tool suitable for memory alloy orthopaedic implants according to claim 3, characterized in that: the pushing mechanism further comprises a guide block, the guide block is sleeved in the sleeve, a threaded through hole B is formed in the center of the guide block, the screw is in threaded fit with the threaded through hole B, and the outer wall of the guide block is provided with an anti-bending corrugated device matched with the axial guide groove.
5. The minimally invasive implantation tool suitable for memory alloy orthopaedic implants according to claim 2, characterized in that: the upper end of the sliding block is an arc surface.
6. The minimally invasive implantation tool suitable for memory alloy orthopaedic implants according to claim 1, characterized in that: the water-cooling structure is including being located the intermediate layer of telescopic lateral wall, be equipped with axial baffle in the intermediate layer, axial baffle is cut apart into water district and play pool with the lower part of intermediate layer, the water inlet is located into water district, the delivery port is located out pool, interbedded top intercommunication.
7. The minimally invasive implantation tool suitable for memory alloy orthopaedic implants according to any of claims 1-6, characterized in that: a locking mechanism is arranged between the cap body and the sleeve, and the locking mechanism is a buckle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010383836.XA CN111513897A (en) | 2020-05-08 | 2020-05-08 | Minimally invasive implantation tool suitable for memory alloy orthopedic implant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010383836.XA CN111513897A (en) | 2020-05-08 | 2020-05-08 | Minimally invasive implantation tool suitable for memory alloy orthopedic implant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111513897A true CN111513897A (en) | 2020-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010383836.XA Pending CN111513897A (en) | 2020-05-08 | 2020-05-08 | Minimally invasive implantation tool suitable for memory alloy orthopedic implant |
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| CN (1) | CN111513897A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9714580D0 (en) * | 1997-07-10 | 1997-09-17 | Wardlaw Douglas | Prosthetic intervertebral disc nucleus |
| CN1207030A (en) * | 1995-11-15 | 1999-02-03 | 奥苏尔公司 | Process and apparatus for making prosthesis socket |
| DE19841252A1 (en) * | 1998-09-09 | 2000-03-30 | Aesculap Ag & Co Kg | Device for inserting bone-screw, comprising of sleeve, pulling rod and tensioning element, in particular suitable for inserting screw in distant area of body |
| CN1709206A (en) * | 2005-07-06 | 2005-12-21 | 四川大学华西医院 | Thigh-bone internal support device |
| US20060074418A1 (en) * | 2004-09-24 | 2006-04-06 | Jackson Roger P | Spinal fixation tool set and method for rod reduction and fastener insertion |
| CN102370533A (en) * | 2011-08-22 | 2012-03-14 | 王昌惠 | Conveying system provided with cold circulating system and used for treating lung volume reduction |
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| CN105266928A (en) * | 2015-09-29 | 2016-01-27 | 深圳清华大学研究院 | Cervical disc prosthesis, implantable device, cervical disc prosthesis and implantable device combination device and method of implanting cervical implant to cervical vertebra |
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| CN208851724U (en) * | 2018-02-08 | 2019-05-14 | 上海市第一妇婴保健院 | A kind of multi-functional adjustable vaginal mold |
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-
2020
- 2020-05-08 CN CN202010383836.XA patent/CN111513897A/en active Pending
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| US20060074418A1 (en) * | 2004-09-24 | 2006-04-06 | Jackson Roger P | Spinal fixation tool set and method for rod reduction and fastener insertion |
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| CN203609487U (en) * | 2013-11-15 | 2014-05-28 | 山东威高骨科材料有限公司 | Femoral head support |
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