CN202821729U - Force control hammer - Google Patents
Force control hammer Download PDFInfo
- Publication number
- CN202821729U CN202821729U CN 201220586393 CN201220586393U CN202821729U CN 202821729 U CN202821729 U CN 202821729U CN 201220586393 CN201220586393 CN 201220586393 CN 201220586393 U CN201220586393 U CN 201220586393U CN 202821729 U CN202821729 U CN 202821729U
- Authority
- CN
- China
- Prior art keywords
- hammer
- hammer body
- strength control
- utility
- model
- 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.)
- Expired - Fee Related
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Classifications
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- 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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups 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
- A61F2002/4681—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor by applying mechanical shocks, e.g. by hammering
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- 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 utility model relates to a force control hammer, wherein via the two-section design of a hammer body part, the hammering force of a hammer body is effectively controlled, thus effectively reducing the femur fracture caused by excessive hammering; and via the tooth groove structure of the sectioning part, the force moments of a handle body and a hammer head part can be effectively kept constant. Via the fork-shaped design of the hammer head part, the purpose of reducing the counter weight of the hammer body can be met, and a hammer head is enabled to slidably hammer along the fork-shaped part.
Description
Technical field
This utility model relates to a kind of instrument of orthopaedics implant, and is particularly a kind of when hip replacement implanting handle body, makes femur not be prone to the operating theater instruments that strike excessively causes the femur splitting.
Background technology
In Replacement of Hip Joint, using the most conventional a kind of operation tool is exactly peening hammer, and when hitting Myelocavity file or prosthese, often can be excessive owing to hitting dynamics, and cause the femur splitting.Existing structure is generally the design of staight shank fixed pattern, in the operating substitution process, very easily the cortical bone to the femur of some sufferers of osteoporosis face causes very large pressure when hitting Myelocavity file or prosthese, causes the splitting of femoral cortex bone, and this problem is perplexing the putting to good use of replacement of prosthese always.So be badly in need of at present a kind of novel peening hammer, can control the dynamics that impacts well, fully guarantee can when impacting, reduce in the hip replacement risk of femur splitting, can make again prosthese squeeze into the position and tightness is suitable, thus the service life of raising hip prosthesis in human body.
The utility model content
The purpose of this utility model is to provide a kind of can control the operation tool that hitting dynamics is difficult for again making the femur splitting when impacting for overcoming defects.
For achieving the above object, this utility model is taked following design:
Strength control hammer adopts split-type design, new structure as shown in Figure 1, strength control hammer is comprised of handle (1) and hammer body (2), and the link mating surface of handle (1) and hammer body (2) adopts tooth slot structure to fix, can be issued to fixation in certain moment, again slippage can occur after exceeding moment of torsion, the dynamics when this design can be guaranteed to hit is controlled in the effective range, can not cause the splitting that causes femur owing to dynamics is excessive.And hammer body (2) part adopts the fork-shaped design, and the selection of more kinds of strike mode can be provided in operation again, satisfies the specific (special) requirements of operation.In operation process, after Myelocavity file or prosthese are put into pulp cavity, use strength control to beat when hitting, hold handle portion, can realize the adaptive purpose of hitting dynamics.
The beneficial effects of the utility model are:
This utility model strength control hammer, owing to adopt above design, by changing the rigidity of strength control hammer, effectively alleviated in the operation process when hitting Myelocavity file or implanting prosthetic the excessive compression to the distal femur pulp cavity, the distal femur splitting obtains effective solution in the art thereby make, can make again prosthese squeeze into the position and tightness is suitable, thereby improve the service life of hip prosthesis in human body, the design of fork-shaped hammer body can be satisfied again the specific (special) requirements of different operations.
This utility model design concept is advanced, simple in structure, fully uses the mechanical fasteners principle to guarantee the stable problem and the risk that has reduced distal femur bone splitting in the art in prosthese later stage.In hip replacement surgery, have good application and market prospect.
Below in conjunction with the drawings and specific embodiments this utility model is described in further details, present embodiment only is this utility model preferred forms, is not to restriction of the present utility model.
Description of drawings
Fig. 1 is the structural representation of this utility model strength control hammer
Fig. 2 is the embodiment sketch map of this utility model strength control hammer
The specific embodiment
As shown in Figure 1, this utility model strength control hammer, it adopts split-type design, strength control hammer is comprised of handle 1 and hammer body 2, and the link mating surface of handle 1 and hammer body 2 adopts tooth slot structure to fix, and can be issued to fixation in certain moment, again slippage can occur after exceeding moment of torsion.As shown in Figure 2, the dynamics when hammer body impacts is during greater than the fixing moment of torsion of teeth groove, and the hammer body part just raises up.Hammer body (2) part adopts the fork-shaped design, and the selection of more kinds of strike mode can be provided in operation again, satisfies the specific (special) requirements of operation.In operation process, after Myelocavity file or prosthese are put into pulp cavity, use strength control to beat when hitting, hold handle portion, can realize the adaptive purpose of hitting dynamics.
Claims (4)
1. a strength control is hammered into shape, and it is comprised of handle (1) and hammer body (2).
2. a kind of strength control hammer according to claim 1 is characterized in that hammer body (2) is connected by pin with handle (1), and hammer body (2) can be rotated along pin.
3. a kind of strength control hammer according to claim 1 is characterized in that, hammer body (2) adopts tooth slot structure to fix with the mating surface of handle (1), can be issued to fixation in certain moment, again slippage can occur after exceeding moment of torsion.
4. a kind of strength control hammer according to claim 1 is characterized in that hammer body (2) adopts the fork-shaped design.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220586393 CN202821729U (en) | 2012-11-02 | 2012-11-02 | Force control hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220586393 CN202821729U (en) | 2012-11-02 | 2012-11-02 | Force control hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202821729U true CN202821729U (en) | 2013-03-27 |
Family
ID=47933542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220586393 Expired - Fee Related CN202821729U (en) | 2012-11-02 | 2012-11-02 | Force control hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202821729U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3799841A1 (en) * | 2019-10-01 | 2021-04-07 | Shukla Medical | Medical implant extractor |
-
2012
- 2012-11-02 CN CN 201220586393 patent/CN202821729U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3799841A1 (en) * | 2019-10-01 | 2021-04-07 | Shukla Medical | Medical implant extractor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20141102 |
|
| EXPY | Termination of patent right or utility model |