CN112842639B - Universal double offset ring spanner - Google Patents
Universal double offset ring spanner Download PDFInfo
- Publication number
- CN112842639B CN112842639B CN202110126499.0A CN202110126499A CN112842639B CN 112842639 B CN112842639 B CN 112842639B CN 202110126499 A CN202110126499 A CN 202110126499A CN 112842639 B CN112842639 B CN 112842639B
- Authority
- CN
- China
- Prior art keywords
- block
- connecting block
- handle
- head
- fixed
- 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.)
- Active
Links
- 230000007704 transition Effects 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 claims description 28
- 239000011324 bead Substances 0.000 claims description 14
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract description 38
- 229910052719 titanium Inorganic materials 0.000 abstract description 38
- 239000010936 titanium Substances 0.000 abstract description 38
- 230000000694 effects Effects 0.000 abstract description 2
- 210000004394 hip joint Anatomy 0.000 description 4
- 210000001519 tissue Anatomy 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 241000276425 Xiphophorus maculatus Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
- 230000035790 physiological processes and functions Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
- A61F2/4601—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for introducing bone substitute, for implanting bone graft implants or for compacting them in the bone cavity
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/92—Impactors or extractors, e.g. for removing intramedullary devices
-
- 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
- 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
- A61F2/4609—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 acetabular cups
-
- 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
- A61F2/4637—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for connecting or disconnecting two parts of a prosthesis
-
- 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
- A61F2/4637—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for connecting or disconnecting two parts of a prosthesis
- A61F2002/4638—Tools for performing screwing, e.g. nut or screwdrivers, or particular adaptations therefor
-
- 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
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The application relates to a universal double offset ring spanner which comprises a handle, a connecting block, a clamping block and an elastic piece, wherein the handle is provided with a connecting rod; a handle: one end of the rotating block is hinged to one end of the handle; connecting blocks: the two end surfaces are cylindrical surfaces, straight buses of the two end surfaces are perpendicular to each other, the side wall is a plane, and the side wall and the end surfaces are in smooth transition; and (3) clamping blocks: one end of the connecting block is provided with a groove structure which is matched with the head of the screw, the other end of the connecting block is hinged with the connecting block, the rotation axis of the connecting block is perpendicular to the rotation axis of the extension rod, and the rotation axis of the clamping block and the rotation axis of the handle are respectively arranged at two ends of the connecting block; elastic piece: at least two elastic pieces are respectively arranged on the extension rod and the clamping block, and one ends of the two elastic pieces are respectively abutted on different end faces of the connecting block. The application has the effect of stopping the titanium nails at a fixed angle.
Description
Technical Field
The application relates to the field of medical instruments, in particular to a universal double offset ring spanner.
Background
The hip joint replacement operation is an operation means for improving the pathological change of the hip joint, recovering the normal physiological function, correcting the abnormal shape and the like. Currently, an acetabular prosthesis is often used for replacing a diseased hip joint in a hip joint replacement operation, and a screw (abbreviated as a titanium nail) made of titanium alloy is used for fixing in the operation in order to enhance the initial stability of the acetabular prosthesis.
When the titanium nails are fixed, the universal wrench is required to be used for operation, the titanium nails are placed at the head of the wrench, the wrench head is rotated to an angle matched with the posture of a human body or bones, then the titanium nails are placed at the position to be screwed, and finally the titanium nails are screwed, so that the purpose of fixing is achieved.
For the above related art, the inventor considers that the conventional universal wrench adopts the dimensional matching mode between the structures to realize the prevention of loosening of the wrench head, and after a period of use, the structures are subjected to the reasons of friction and fatigue, the sizes of the structures can be changed, the wrench head is easy to loosen, and the wrench head is difficult to fix at a certain angle, namely the implantation of titanium nails is inconvenient.
Disclosure of Invention
The application provides a universal double offset ring spanner, which aims to fix the head of the spanner at a fixed angle.
The application provides a universal double offset ring spanner, which adopts the following technical scheme:
a universal double offset ring spanner comprises a handle, a connecting block, a clamping block and an elastic piece; a handle: one end of the rotating block is hinged to one end of the handle; connecting blocks: the two end surfaces are cylindrical surfaces, straight buses of the two end surfaces are perpendicular to each other, the side wall is a plane, and the side wall and the end surfaces are in smooth transition; and (3) clamping blocks: one end of the connecting block is provided with a groove structure which is matched with the head of the screw, the other end of the connecting block is hinged with the connecting block, the rotation axis of the connecting block is perpendicular to the rotation axis of the extension rod, and the rotation axis of the clamping block and the rotation axis of the handle are respectively arranged at two ends of the connecting block; elastic piece: at least two elastic pieces are respectively arranged on the extension rod and the clamping block, and one ends of the two elastic pieces are respectively abutted on different end faces of the connecting block.
By adopting the technical scheme, the body posture of a patient in operation is uncertain, so that the angle between the titanium nail and the handle is also required to be changed according to actual conditions when the titanium nail is connected. When the titanium nail screwing device is used, a user places a titanium nail at the end part of the clamping block, a groove on the titanium nail is sleeved at one end of the clamping block, which is provided with a groove structure, then the connecting block and the clamping block are rotated, so that the titanium nail is rotated to an expected angle, at the moment, two elastic pieces are respectively abutted against the two ends of the connecting block, namely, the static friction force between the connecting block and the handle and between the two elastic pieces is increased in a pressure increasing mode, so that the clamping block can be stably kept at the current angle, then the head part of the titanium nail is abutted against the position to be screwed in, and the user can realize the screwing in of the titanium nail by rotating the handle.
Optionally, the handle includes extension rod and sets firmly the installation piece of extension rod tip, sets up first installation cavity on the installation piece, and the installation piece profile is the C word form, and the one end of connecting block articulates in first installation cavity.
Through adopting above-mentioned technical scheme, need drive the connecting block through the rotation handle with titanium nail screw in human in the operation in-process, through first installation cavity, can strengthen the joint strength between connecting block and the installation piece, through the butt of the inner wall of first installation cavity to the connecting block, reduce the atress of connecting block and the articulated department of installation piece, prolonged life.
Optionally, a second installation cavity is formed in the clamping block, the end part of the clamping block, which is opposite to the connecting block, is in a C-shaped profile shape, and the other end of the connecting block is hinged in the second installation cavity.
Through adopting above-mentioned technical scheme, need drive connecting block and joint piece through the rotation handle at the operation in-process and screw in titanium nail human, through the second installation cavity, can strengthen the joint strength between connecting block and the joint piece, through the butt of the inner wall in second installation cavity to the connecting block, reduce the atress of connecting block and the articulated department of joint piece, prolonged life.
Optionally, the joint piece includes with connecting block articulated fixed block, with fixed block rigid coupling's dead lever and set firmly in the dead head of dead lever one end, the trench is seted up on the dead head, and the dead lever is the reducing form to the dead head direction by the fixed block, and the lateral wall of dead lever and the lateral wall of fixed block and dead head all smooth transition.
Through adopting above-mentioned technical scheme, because the joint piece is direct to be connected with the titanium nail, so the joint piece is nearer apart from human tissue and skeleton, can reduce the volume of joint piece through the dead lever of reducing form, reduces the possibility that joint piece and human touching, provides bigger field of vision space for the operator simultaneously, the operator of being convenient for carries out the screw in work of titanium nail.
Optionally, the elastic component includes a ball screw, and a ball head portion of the ball screw is opposite to the connecting block.
Through adopting above-mentioned technical scheme, the bulb part of ripples pearl screw can smoothly slide on terminal surface and the lateral wall of connecting block, and the bulb part of ripples pearl screw can support tightly on the lateral wall of connecting block because of receiving the elasticity of spring simultaneously, can increase the resistance that the connecting block received when rotating through the mode of increase pressure for the connecting block can be stabilized on an angle.
Optionally, the outline of the outer wall of the connecting block, which is used for the movement of the wave bead screw, is U-shaped.
Through adopting above-mentioned technical scheme, even connecting block outer wall that links up can make the smooth and easy slip of bulb part of ripples pearl screw, and convenient to use person fixes the joint piece at a certain angle simultaneously.
Optionally, the slot structure includes a plurality of arc grooves of seting up on the fixed head lateral wall, and arc groove is along circumference evenly distributed, and the fixed head lateral wall of arc groove both sides is the cylinder, and the terminal surface is hexagonal plum blossom form.
Through adopting above-mentioned technical scheme, the end of conventional spanner or screwdriver is straight and thin platy far away, and the dead head tip edge after having seted up the arc wall is the cylinder, and for conventional setting is thicker, consequently after using a period, conventional setting can lead to the smooth silk phenomenon because wearing and tearing, and the dead head because the outer wall of cylinder for the point of dead head and titanium nail tip recess inner wall butt is not the nearest point of titanium nail tip recess inner wall contained angle, consequently still has sufficient entity structure and titanium nail tip recess inner wall butt after the dead head is worn, reduced the possibility that smooth silk phenomenon takes place.
Optionally, the fixing head is arranged in a reducing shape from the direction of the fixing rod to the other end, and the taper is 0.5-1.5 degrees.
Through adopting above-mentioned technical scheme, because the tip recess of titanium nail also has the tapering, so set up the tapering with the fixed head and can make the fixed head more smooth and easy insert in the tip recess of titanium nail, can make the better adaptation of fixed head and titanium nail tip recess simultaneously, strengthen the joint strength between fixed head and the titanium nail.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the body posture of the patient in the operation is uncertain, so that the angle between the titanium nail and the handle is also required to be changed according to the actual situation when the titanium nail is connected. When the titanium nail screwing device is used, a user places a titanium nail at the end part of the clamping block, a groove on the titanium nail is sleeved at one end of the clamping block, which is provided with a groove structure, then the connecting block and the clamping block are rotated, so that the titanium nail is rotated to an expected angle, at the moment, two elastic pieces are respectively abutted against the two ends of the connecting block, namely, the static friction force between the connecting block and the handle and between the two elastic pieces is increased in a pressure increasing mode, so that the clamping block can be stably kept at the current angle, then the head part of the titanium nail is abutted against the position to be screwed in, and the user can realize the screwing in of the titanium nail by rotating the handle;
2. the end of the conventional spanner or screwdriver is flat and thin plate-shaped far away, the edge of the end of the fixing head provided with the arc-shaped groove is a cylindrical surface and thicker than the conventional fixing head, so that after the conventional spanner or screwdriver is used for a period of time, the conventional fixing head can lead to a slipping phenomenon due to abrasion, and the point of the fixing head abutting against the inner wall of the titanium nail end groove is not the nearest point of the included angle of the inner wall of the titanium nail end groove due to the outer wall of the cylindrical surface, so that after the fixing head is worn, a sufficient solid structure still abuts against the inner wall of the titanium nail end groove, and the possibility of the slipping phenomenon is reduced.
Drawings
Fig. 1 is a schematic diagram of an embodiment.
Fig. 2 is an exploded view showing the connection relationship between the connection block and the snap-fit block in the embodiment.
Fig. 3 is a schematic view showing the structure of the fixed head in the embodiment.
Reference numerals illustrate: 1. a handle; 11. a handle; 12. an extension rod; 13. a mounting block; 14. a first mounting cavity; 15. an arc surface portion; 2. a connecting block; 3. a clamping block; 31. a fixed block; 32. a fixed rod; 33. a fixed head; 34. a second mounting cavity; 35. an arc-shaped groove; 4. a wave bead screw.
Detailed Description
The present application will be described in further detail with reference to the accompanying drawings.
The embodiment of the application discloses a universal double offset ring spanner, which comprises a handle 1, a connecting block 2 and a clamping block 3, as shown in fig. 1. The handle 1 comprises a handle 11, an extension rod 12 and a mounting block 13, wherein the extension rod 12 is fixedly connected with the handle 11 to form a long straight rod-shaped structure, and the mounting block 13 is fixedly arranged on the end part of the handle 11 based on the principle of the extension rod 12. The connecting block 2 is hinged on the mounting block 13 through a pin shaft, and the clamping block 3 is hinged on the connecting block 2 through a pin shaft. The mounting block 13 and the clamping block 3 are respectively arranged at the two ends of the connecting block 2. When the connecting block 2 is taken as a reference, the rotation axis of the clamping block 3 is perpendicular to the rotation axis of the mounting block 13.
Referring to fig. 1 and 2, the connecting block 2 includes two cylindrical end surfaces and four straight side walls, wherein each set of two opposite side walls are respectively in smooth transition with one end surface, and when the connecting block 2 is arranged along the length direction of the handle 1, the two end surfaces of the connecting block 2 are respectively opposite to the mounting block 13 and the clamping block 3.
Referring to fig. 2, a first installation cavity 14 is formed in the installation block 13, the first installation cavity 14 enables the outline of the installation block 13 to be in a C shape with an opening facing away from the handle 11, one end of the connection block 2 is hinged in the first installation cavity 14, and two outer side walls of the connection block 2 are abutted against two opposite inner side walls of the first installation cavity 14.
Referring to fig. 1 and 2, the clamping block 3 includes a fixing block 31 hinged with the connecting block 2, a fixing rod 32 fixedly arranged on the fixing block 31, and a fixing head 33 fixedly arranged on the fixing rod 32. The second installation cavity 34 is formed on the fixed block 31, so that the outline of the second installation cavity 34 is shaped like a C with an opening facing the installation block 13, the other end of the connecting block 2 is hinged in the second installation cavity 34, and the other two side walls of the connecting block 2 are respectively abutted to the two opposite side walls in the second installation cavity 34.
Referring to fig. 2, a wave bead screw 4 is fixedly arranged on the mounting block 13, the wave bead screw 4 is arranged along the length direction of the extension rod 12, a pipe body part of the wave bead screw 4 is positioned in the entity of the mounting block 13, and a ball head part of the wave bead screw 4 extends out of the entity of the mounting block 13 from the first mounting cavity 14 and is simultaneously abutted on one end face of the connecting block 2. The fixing block 31 is also fixedly provided with the wave bead screw 4, the pipe body part of the wave bead screw 4 is positioned inside the entity of the fixing block 31, the ball head part of the wave bead screw 4 extends out of the entity of the fixing block 31 from the second installation cavity 34 and is simultaneously abutted on the other end face of the connecting block 2, namely, the two wave bead screws 4 are relatively distributed on the installation block 13 and the fixing block 31. The rotation axis of the fixed block 31 is parallel to the straight generatrix of the end face of the connecting block 2 nearest to the fixed block, the rotation axis of the mounting block 13 is parallel to the straight generatrix of the end face of the connecting block 2 nearest to the fixed block, that is, the sliding surfaces of the two wave bead screws 4 provided by the connecting block 2 are continuously smooth U-shaped.
Referring to fig. 2, the end surface of the mounting block 13 facing the fixing block 31 is polished to form an arc surface 15 for reducing the possibility of injury to a human body after touching human tissue due to sharp corners, and the end surface of the fixing block 31 facing the mounting block 13 is also provided (not shown).
Referring to fig. 2 and 3, the fixing rod 32 is reduced in diameter from the fixing block 31 to the fixing head 33, and the reduced diameter fixing rod 32 can provide more vision for the user, and simultaneously reduces the possibility of the instrument touching human tissues. The fixing head 33 is in a knob shape formed by arranging a plurality of arc grooves 35 on the side wall of a cylindrical block, the end surface of the fixing head 33 facing away from the fixing block 31 is in a hexagonal plum blossom shape, and the side wall of the fixing head 33 is in continuous smooth transition and is in axisymmetric arrangement. In addition, in order to enable the fixing head 33 to be better matched with the titanium nails, the fixing head 33 is arranged in a reducing shape from the direction of the fixing rod 32 to the other end, and the taper is 1 degree.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (6)
1. The utility model provides a universal double offset ring spanner which characterized in that: comprises a handle (1), a connecting block (2), a clamping block (3) and an elastic piece;
handle (1): one end of the connecting block (2) is hinged on the handle (1);
connecting block (2): the two end surfaces are cylindrical surfaces, straight buses of the two end surfaces are perpendicular to each other, the side wall is a plane, and the side wall and the end surfaces are in smooth transition;
clamping block (3): one end of the connecting block is provided with a groove structure which is matched with the head of the screw, the other end of the connecting block is hinged with the connecting block (2), the rotation axis is perpendicular to the rotation axis of the extension rod (12), and the rotation axis of the clamping block (3) and the rotation axis of the handle (1) are respectively arranged at two ends of the connecting block (2);
elastic piece: at least two elastic pieces are respectively arranged on the extension rod (12) and the clamping block (3), and one ends of the two elastic pieces are respectively abutted on different end surfaces of the connecting block (2);
the elastic piece comprises a wave bead screw (4), and the ball head part of the wave bead screw (4) is opposite to the connecting block (2); the outline of the outer wall of the connecting block (2) for the movement of the wave bead screw (4) is U-shaped.
2. The universal ring spanner according to claim 1, wherein: the handle (1) comprises an extension rod (12) and a mounting block (13) fixedly arranged at the end part of the extension rod (12), a first mounting cavity (14) is formed in the mounting block (13), the outline of the mounting block (13) is C-shaped, and one end of the connecting block (2) is hinged in the first mounting cavity (14).
3. The universal double offset ring spanner according to claim 1 or 2, wherein: the second installation cavity (34) is formed in the clamping block (3), the end part of the clamping block (3) right opposite to the connecting block (2) is in a C-shaped outline shape, and the other end of the connecting block (2) is hinged in the second installation cavity (34).
4. The universal ring spanner according to claim 1, wherein: the clamping block (3) comprises a fixed block (31) hinged with the connecting block (2), a fixed rod (32) fixedly connected with the fixed block (31) and a fixed head (33) fixedly arranged at one end of the fixed rod (32), the groove structure is formed in the fixed head (33), the fixed rod (32) is in a reducing shape from the fixed block (31) to the fixed head (33), and the side wall of the fixed rod (32) is in smooth transition with the side wall of the fixed block (31) and the side wall of the fixed head (33).
5. The universal ring spanner according to claim 4, wherein: the groove structure comprises a plurality of arc grooves (35) formed in the side wall of the fixing head (33), the arc grooves (35) are uniformly distributed along the circumferential direction, the outer side wall of the fixing head (33) on two sides of the arc grooves (35) is a cylindrical surface, and the end face of the fixing head is in a hexagonal plum blossom shape.
6. The universal ring spanner according to claim 5, wherein: the fixed head (33) is arranged in a reducing shape from the direction of the fixed rod (32) to the other end, and the taper is 0.5-1.5 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110126499.0A CN112842639B (en) | 2021-01-29 | 2021-01-29 | Universal double offset ring spanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110126499.0A CN112842639B (en) | 2021-01-29 | 2021-01-29 | Universal double offset ring spanner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112842639A CN112842639A (en) | 2021-05-28 |
| CN112842639B true CN112842639B (en) | 2023-09-01 |
Family
ID=75986832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110126499.0A Active CN112842639B (en) | 2021-01-29 | 2021-01-29 | Universal double offset ring spanner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112842639B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201806779U (en) * | 2010-10-11 | 2011-04-27 | 北京爱康宜诚医疗器材股份有限公司 | Universal screw driver |
| CN205031361U (en) * | 2015-10-10 | 2016-02-17 | 浙江科惠医疗器械股份有限公司 | Bone screw spanner with effect of controlling |
| CN205991089U (en) * | 2016-08-17 | 2017-03-01 | 大连蒂艾斯科技发展股份有限公司 | Artificial toy doll taper Universal active device |
| CN211583458U (en) * | 2020-01-03 | 2020-09-29 | 陈立军 | Universal screwdriver for tail cap of orthopedic intramedullary nail |
| CN211674508U (en) * | 2019-12-23 | 2020-10-16 | 苏州微创脊柱创伤医疗科技有限公司 | Spanner |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9814470B2 (en) * | 2014-05-22 | 2017-11-14 | Symmetry Medical Manufacturing, Inc. | Offset orthopaedic reamer handle |
| US10842546B2 (en) * | 2018-05-17 | 2020-11-24 | b-ONE Ortho, Corp. | Screw driver system |
| US11007625B2 (en) * | 2018-10-01 | 2021-05-18 | Yuan Li Hsing Industrial Co., Ltd. | Two-stage universal joint |
-
2021
- 2021-01-29 CN CN202110126499.0A patent/CN112842639B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201806779U (en) * | 2010-10-11 | 2011-04-27 | 北京爱康宜诚医疗器材股份有限公司 | Universal screw driver |
| CN205031361U (en) * | 2015-10-10 | 2016-02-17 | 浙江科惠医疗器械股份有限公司 | Bone screw spanner with effect of controlling |
| CN205991089U (en) * | 2016-08-17 | 2017-03-01 | 大连蒂艾斯科技发展股份有限公司 | Artificial toy doll taper Universal active device |
| CN211674508U (en) * | 2019-12-23 | 2020-10-16 | 苏州微创脊柱创伤医疗科技有限公司 | Spanner |
| CN211583458U (en) * | 2020-01-03 | 2020-09-29 | 陈立军 | Universal screwdriver for tail cap of orthopedic intramedullary nail |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112842639A (en) | 2021-05-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11903621B2 (en) | Rod reduction device and method of use | |
| US7604640B2 (en) | Device and system for applying rotary impact | |
| US10085838B2 (en) | Assembly tool | |
| US9592074B2 (en) | Axially reciprocating microsurgical instrument with radially compressed actuator handle | |
| JP4399554B2 (en) | Space-saving multidirectional adaptable vertebra joint device | |
| US6997709B2 (en) | Dental hand instrument and tip of the instrument | |
| US7842091B2 (en) | Implantable replacement joint | |
| EP1908412A3 (en) | Surgical instrument with articulating tool assembly | |
| US10201362B2 (en) | Contoured surgical forceps | |
| US10441337B2 (en) | Distraction and compression in one plier | |
| CN112842639B (en) | Universal double offset ring spanner | |
| CN219021482U (en) | Pedicle screw placement instrument and pedicle screw system | |
| CN210872051U (en) | Medical endoscope operation auxiliary stand | |
| CN211962169U (en) | Hollow screw assembly structure and pressurizing tool | |
| JP2004358625A (en) | Ratchet wrench | |
| CN111839645A (en) | Hemostatic forceps with lock catch structure | |
| CN112386214B (en) | Disinfection type nasopharyngoscope with loss prevention and breakage prevention functions | |
| CN219439572U (en) | Device for separating a ball head from a femoral stem | |
| CN213075880U (en) | Orthopedic reduction forceps | |
| CN219835673U (en) | Medical self-clamping plum blossom screwdriver | |
| CN209236359U (en) | Surigical tool | |
| CN211325538U (en) | Universal screwdriver for surgical operation | |
| CN213787720U (en) | Percutaneous rod holder | |
| CN109172058B (en) | Acetabular cup fixing screw clamping forceps | |
| CN215839405U (en) | Novel degradable pressurization expansion screw assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wei Zhangli Inventor after: Xie Fengbao Inventor after: Shi Chunbao Inventor after: Liu Huafeng Inventor after: Hao Mengjuan Inventor before: Xie Fengbao Inventor before: Shi Chunbao Inventor before: Liu Huafeng Inventor before: Hao Mengjuan |
|
| CB03 | Change of inventor or designer information |