CN107307900B - A kind of screw broken nail nail-fetching device - Google Patents
A kind of screw broken nail nail-fetching device Download PDFInfo
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- CN107307900B CN107307900B CN201710707006.6A CN201710707006A CN107307900B CN 107307900 B CN107307900 B CN 107307900B CN 201710707006 A CN201710707006 A CN 201710707006A CN 107307900 B CN107307900 B CN 107307900B
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- 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
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- 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
- A61B2017/922—Devices for impaction, impact element
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- Orthopedic Medicine & Surgery (AREA)
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Abstract
The invention discloses a kind of screw broken nail nail-fetching devices, its key points of the technical solution are that including trepan, nail is taken to cover and take blind rivet, taking nail set includes outer direct tube section, conical cylinder section and spliced eye through outer direct tube section and conical cylinder section, the big opening end of conical cylinder section is connected with an end face of outer direct tube section, taking blind rivet includes interior direct tube section and shrinkable section, internal screw thread is provided on outer direct tube section, external screw thread is provided on interior direct tube section, shrinkable section includes clamping jaw, clamping jaw is made of elastic material, clamping jaw is formed with shrinkable slot between being provided with multiple and two clamping jaw of arbitrary neighborhood, outer direct tube section is in when direct tube section rotation, shrinkable section can be contracted to pinching screw under the effect of the inner wall of conical cylinder section.When taking out screw with the screw broken nail nail-fetching device, the direction that trepan needs not be along screw length grinds entire bone thoroughly, and the aperture after polishing does not need screw very big, therefore that feather plucking or fracture can be taken out in the lesser situation of injury caused by bone.
Description
Technical field
The present invention relates to a kind of medical instruments field, more particularly to a kind of screw broken nail nail-fetching device.
Background technique
When fracture accident occurs for people, it usually needs squeeze into Medical screw in fracture, further taken out after union
Screw, if screw, in the intracorporal overlong time of people, the fatigue strength of screw reaches capacity, when medical worker is when taking out screw,
After screw is easy to happen the phenomenon that feather plucking is perhaps twisted into two parts screw feather plucking or fracture, there is still a need for take out screw by medical worker.Tradition
The screw for taking out feather plucking or fracture side there are mainly two types of:
First is that being polishing to bone mill thoroughly with trepan along screw length direction, screw is further taken out, this method is needed along spiral shell
The direction for following closely length grinds entire bone thoroughly, and the operating time is long and the injury caused by bone is big, or even second fracture occurs etc.
Situation.
Second is that first polished inwards a distance from the opening of screw along screw with trepan, it then will with tools such as pliers
Screw screws out, and the direction that this method needs not be along screw length grinds entire bone thoroughly, need to only beat along the length direction of screw
The distance for pliers crawl screw is ground, however due to needing to protrude on pliers in polishing hole, polishing hole needs to beat
That grinds is very big, and the injury caused by bone is big, and when screw and bone are completely embedded, pliers will be difficult to screw out screw.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of screw broken nail nail-fetching device, the screw
Broken nail nail-fetching device can take out the screw of feather plucking or fracture in the lesser situation of injury caused by bone.
To achieve the above object, the present invention provides the following technical scheme that a kind of screw broken nail nail-fetching device, including can
The trepan that is ground along screw length direction to the bone around screw and bone can be protruded into along screw length direction
It is interior take nail cover and can screw in take nail cover in take blind rivet, it is described to take blind rivet to be plugged in take in nail set and between the two
Dismantling connection, described to take nail set include outer direct tube section, conical cylinder section and the spliced eye through outer direct tube section and conical cylinder section, described
Blind rivet is taken to be plugged in spliced eye, the big opening end of the conical cylinder section is connected with an end face of outer direct tube section, the conical cylinder section
Small open end internal diameter be adapted with screw diameter；
It is described that blind rivet is taken to include the interior direct tube section being plugged in outer direct tube section and be connected with an end face of interior direct tube section
Shrinkable section, be provided with internal screw thread in the spliced eye, described take is provided with external screw thread compatible with internal screw thread in blind rivet,
Described shrinkable section includes the clamping jaw that can contact at spliced eye inner wall, and the clamping jaw is made of elastic material, and the clamping jaw is set
It is equipped with multiple and along interior direct tube section a end face to be annularly uniformly distributed, is formed with shrinkable slot between two clamping jaws of arbitrary neighborhood,
During the interior direct tube section rotates in outer direct tube section internal diameter can be shunk under the effect of the inner wall of conical cylinder section for shrinkable section
Until pinching screw.
As a further improvement of the present invention, the medial surface that the clamping jaw is in contact with screw is configured to increase and spiral shell
The curved surface of the contact area of nail, and on the cross section on the length direction of clamping jaw, the outer profile that the curved surface is constituted is camber line.
As a further improvement of the present invention, folder can be increased by being provided on the medial surface that the clamping jaw is in contact with screw
The raised line of frictional force between pawl and screw, the length direction of the raised line and the length direction of clamping jaw are identical, the raised line
Cross section is set as triangle, and the raised line is provided with multiple and medial surfaces along clamping jaw and is circlewise distributed.
As a further improvement of the present invention, the outer direct tube section includes the first guide section and the first thread segment, described
The medial surface of first guide section be smooth cylindrical surface, first guide section between conical cylinder section and the first thread segment, and
The junction of the medial surface of the medial surface and conical cylinder section of first guide section is provided with rounded corner.
As a further improvement of the present invention, the interior direct tube section includes the second guide section and the second thread segment, described
The lateral surface of second guide section is smooth cylindrical surface, and second guide section is between shrinkable section and the second thread segment.
As a further improvement of the present invention, between first guide section front end and first thread segment rear end away from
From be greater than the distance between the clamping jaw front end and second guide section rear end, it is described screw into the internal screw thread she
Begin, the clamping jaw front end is connected on the medial surface of the first guide section.
As a further improvement of the present invention, it is described take nail put on setting there are two convenient for rotation take nail cover it is first-hand
Handle, the first handle include first hand and the first connecting column, one end and the first hand of first connecting column
It is detachably connected by screw thread, the other end is fixedly connected with outer direct tube section lateral surface, and the central axis position of two first handles
In on same straight line.
As a further improvement of the present invention, described to take the second-hand for taking blind rivet in blind rivet there are two settings convenient for rotation
Handle, the second handle include second hand and the second connecting column, and second connecting column one end and second hand are logical
It crosses screw thread to be detachably connected, the other end is fixedly connected with the lateral surface of interior direct tube section, and the central axis position of two second handles
In on same straight line.
As a further improvement of the present invention, the outer surface of the first hand and the second hand is respectively provided with
For the male and fomale(M&F) that can increase frictional force.
As a further improvement of the present invention, being provided on the end face of the first handle and the second handle can
Reduce the cavity of handle weight.
Beneficial effects of the present invention: by being provided with conical cylinder section and outer direct tube section on taking nail set, it is arranged on taking blind rivet
There are shrinkable section and interior direct tube section, China and foreign countries' direct tube section and interior direct tube section are connected through a screw thread, so that interior direct tube section is in outer straight tube
During rotating in section internal diameter can be shunk until pinching screw under the effect of the inner wall of conical cylinder section for shrinkable section.When screw exists
When the interior fracture of bone or feather plucking, is first polished along screw length direction the bone around screw with trepan, then will
It takes nail to cover and blind rivet is taken to be set on the outer surface of screw, then back rotation takes nail to cover, so that the clamping jaw of blind rivet front end is taken to bore
It is flexed up to pinching screw under the inner wall effect of cylinder section, finally rotation takes blind rivet, and screw rotation is driven to take screw out of bone
Out, when being polished with trepan bone, the distance that screw can be clamped for clamping jaw need to be only polished along screw length direction
, do not need to grind bone thoroughly, reduce grinding depth, as long as and the hole that polish for taking nail set can extend into, when
Take nail cover outer diameter setting it is smaller when, the aperture in the hole polished can be with very little, which, which realizes, is subtracting
Also the screw that fracture or feather plucking can be taken out when the depth and diameter in the small hole polished with trepan, so as to the bone of patient
Caused by injure it is smaller, patient be easier restore.
Detailed description of the invention
Fig. 1 is the schematic perspective view of screw broken nail nail-fetching device；
Fig. 2 is the cross-sectional view for taking nail to cover；
Fig. 3 is the schematic perspective view for taking blind rivet；
Fig. 4 is the schematic perspective view of clamping jaw；
Fig. 5 is the structural schematic diagram of clamping jaw.
Appended drawing reference: 1, nail is taken to cover；11, outer direct tube section；111, the first guide section；112, the first thread segment；12, cone cylinder
Section；13, spliced eye；14, internal screw thread；15, first handle；151, first hand；152, the first connecting column；153, male and fomale(M&F)；
154, cavity；2, blind rivet is taken；21, interior direct tube section；211, the second guide section；212, the second thread segment；22, shrinkable section；221,
Clamping jaw；222, shrinkable slot；223, curved surface；224, raised line；23, external screw thread；24, second handle；241, second hand；242,
Second connecting column.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention is described in more detail.Wherein identical components are with identical
Appended drawing reference indicates.It should be noted that word "front", "rear" used in the following description, "left", "right", "up" and "down"
Refer to that the direction in attached drawing, word " bottom surface " and " top surface ", "inner" and "outside" are referred respectively to towards or away from particular elements
The direction of geometric center.
Shown in 5, a kind of screw broken nail nail-fetching device of the present embodiment, including can be along screw length side
To the trepan that the bone around screw is ground and can be protruded into along screw length direction in bone taking nail set 1 with
And can screw in take in nail set 1 and take blind rivet 2, it takes blind rivet 2 to be plugged in and takes in nail set 1 and be detachably connected between the two, take
Nail set 1 includes outer direct tube section 11, conical cylinder section 12 and the spliced eye 13 through outer direct tube section 11 and conical cylinder section 12, takes blind rivet 2
It is plugged in spliced eye 13, the big opening end of conical cylinder section 12 is connected with an end face of outer direct tube section 11, which takes nail
Device is set as and covers, and the big opening end of its conical cylinder section 12 of different set of screw broken nail nail-fetching device is different from the internal diameter of small open end,
The small open end internal diameter screw broken nail nail-fetching device identical with screw diameter that conical cylinder section 12 may be selected when use takes nail set 1 at this time
It can be set on the outer surface of screw；
Taking blind rivet 2 includes the interior direct tube section 21 being plugged in outer direct tube section 11 and the end face with interior direct tube section 21
Connected shrinkable section 22 is provided with internal screw thread 14 in spliced eye 13, take be provided in blind rivet 2 it is compatible with internal screw thread 14 outer
Screw thread 23 enables and blind rivet 2 is taken to rotate and connect with nail set 1 is taken, and shrinkable section 22 includes that can contact at 13 inner wall of spliced eye
Clamping jaw 221, clamping jaw 221 is made of phosphor bronze elastomeric material, and clamping jaw 221 is provided with one end multiple and along interior direct tube section 21
Face is annularly uniformly distributed, and shrinkable slot 222 is formed between two clamping jaws 221 of arbitrary neighborhood, interior direct tube section 21 is in outer direct tube section
During rotating in 11 internal diameter can be shunk until pinching screw under the effect of the inner wall of conical cylinder section 12 for shrinkable section 22.Pass through
The connection type of threaded connection is, it can be achieved that taking blind rivet 2 and taking being detachably connected between nail set 1, when the screw broken nail nail-fetching device
When disinfection, blind rivet 2 can will be taken to separate to sterilize with nail block is taken, disinfection is more thorough, and effect is more preferable, and works as the screw broken nail nail-fetching device
In storage or transport, the screw-in of blind rivet 2 can will be taken to take in nail set 1, enable and take the clamping jaw 221 in blind rivet 2 to be hidden in take nail
In set 1, clamping jaw 221 will not directly be contacted with foreign object, so that clamping jaw 221 is hardly damaged, and due to the small open end of conical cylinder section 12
Internal diameter is identical as screw diameter, and when 221 pinching screw of clamping jaw, clamping jaw 221 will not be stretched out out of conical cylinder section 12, so that taking nail
In the process, clamping jaw 221, which is always positioned at, takes in nail set 1, and clamping jaw 221 is increased the screw by taking the protection of nail set 1 to be hardly damaged
The service life of broken nail nail-fetching device.
When screw is broken or when feather plucking in bone, first with trepan along screw length direction to the bone around screw
It polishes, will then take nail set 1 and blind rivet 2 is taken to be set on the outer surface of screw, then rotation takes nail set 1, so that taking blind rivet 2
The clamping jaw 221 of front end is flexed up to pinching screw under the inner wall effect of conical cylinder section 12, and finally rotation takes blind rivet 2, drives screw
Rotation takes out screw out of bone, and when being polished with trepan bone, need to only polish along screw length direction can
The distance that screw is clamped for clamping jaw 221 does not need to grind bone thoroughly, reduces grinding depth, as long as and the hole that polish
For taking nail set 1 to can extend into, when the outer diameter setting for taking nail set 1 it is smaller when, the aperture in the hole polished can be with very little, should
Screw broken nail nail-fetching device, which is realized, can also take out fracture in the depth and diameter in the hole that reduction is polished with trepan or beat
The screw of hair, so that injuring smaller, patient's more easily recovery caused by the bone of patient.
As a kind of improved specific embodiment, the medial surface that clamping jaw 221 is in contact with screw is set as curved surface 223,
And on the cross section on the length direction of clamping jaw 221, the outer profile that curved surface 223 is constituted is camber line, since the side of screw is
Curved surface 223, when setting curved surface 223 for the medial surface that clamping jaw 221 is in contact with screw and being capable of increasing 221 pinching screw of clamping jaw,
The contact area of clamping jaw 221 and screw, the pinching screw that clamping jaw 221 is more fastened are not easy between screw and clamping jaw 221
It skids, so that can smoothly be screwed out screw out of bone after 221 pinching screw of clamping jaw.
As a kind of improved specific embodiment, energy is provided on the medial surface that the clamping jaw 221 is in contact with screw
Enough increase the raised line 224 of the frictional force between clamping jaw 221 and screw, the length direction of the raised line 224 and the length of clamping jaw 221
Direction is identical, and the cross section of the raised line 224 is set as triangle, and the raised line 224 is provided with multiple and along clamping jaw 221
Side is circlewise distributed, and after 221 pinching screw of clamping jaw, is screwed out screw out of bone by rotating, and raised line 224 can increase
Rotating friction force between big clamping jaw 221 and screw, further avoids that relative rotation occurs between clamping jaw 221 and screw, causes
Screw is not easy to screw out out of bone.
As a kind of improved specific embodiment, outer direct tube section 11 includes the first guide section 111 and the first thread segment
112, the medial surface of the first guide section 111 is smooth cylindrical surface, and the first guide section 111 is located at conical cylinder section 12 and the first thread segment
Between 112, and the junction of the medial surface of the medial surface of the first guide section 111 and conical cylinder section 12 is provided with rounded corner, by the
The setting of one guide section 111 so that the changeover portion that conical cylinder section 12 and the first thread segment 112 have one end smooth, avoid clamping jaw 221 from
When first thread segment 112 is directly slid onto conical cylinder section 12,221 front end of clamping jaw is between the first thread segment 112 and conical cylinder section 12
Junction is blocked, and rounded corner is arranged by the medial surface junction of medial surface and conical cylinder section 12 in the first guide section 111, into
One step clamping jaw 221 smoother to be slid onto conical cylinder section 12 from the first guide section 111, avoid the process card in sliding
Firmly, so that claw is difficult to smoothly be slid onto conical cylinder section 12, cause the device to be difficult to pinching screw, be unfavorable for screw out of bone
It takes out.
As a kind of improved specific embodiment, interior direct tube section 21 includes the second guide section 211 and the second thread segment
212, the lateral surface of the second guide section 211 is smooth cylindrical surface, and the second guide section 211 is located at shrinkable section 22 and the second screw thread
Between section 212, by the way that the second guide section 211 is arranged between shrinkable section 22 and the second thread segment 212, so that shrinkable section 22
It is not directly connected between the second thread segment 212, not only reduces the difficulty of processing for taking blind rivet 2, also avoid the folder of contraction section
When pawl 221 is directly connected with the second thread segment 212, junction is due to being provided with screw thread, and stress is concentrated, so that junction is easy
It is broken, the service life of the screw broken nail nail-fetching device is caused to reduce.
As a kind of improved specific embodiment, between 112 rear end of 111 front end of the first guide section and the first thread segment
Distance be greater than the distance between 221 front end of clamping jaw and 211 rear end of the second guide section, i.e., external screw thread 23 just screw-in internal screw thread 14 when
Wait, the front end of clamping jaw 221 is connected on the medial surface of the first guide section 111, avoid external screw thread 23 just screwed in internal screw thread 14 when
It waits, 221 front end of clamping jaw is connected on the medial surface of conical cylinder section 12, and conical cylinder section 12 generates component backward to clamping jaw 221 at this time, is made
Blind rivet 2 must be taken to be not easy screw-in to take in nail set 1, cause to take blind rivet 2 and take the assembly difficulty increase between nail set 1, assembly efficiency reduces.
As a kind of improved specific embodiment, takes and take the first-hand of nail set 1 there are two settings on nail set 1 convenient for rotation
Handle 15, first handle 15 include first hand 151 and the first connecting column 152, one end of the first connecting column 152 and the first
Hand 151 is detachably connected by screw thread, and the other end is fixedly connected with outer 11 lateral surface of direct tube section, and two first handles 15
Central axis is located along the same line, i.e. two first handles 15 are not only more attractive at being symmetrical arranged, and convenient for medical worker
Both hands hold first hand 151, and after 221 pinching screw of clamping jaw, medical worker can be rotated by first handle 15 takes nail
Set 1 takes out screw out of bone, and medical worker is more easily rotated and takes nail set 1, and rotation efficiency is higher, and first
Handle portion 151 be detachably connected with the first connecting column 152 enable first hand 151 from take nail set 1 on disassemble, subtract
Small storage space, and when to taking nail set 1 to carry out disinfection, first hand 151 can be disassembled, reduce disinfection cost.
As a kind of improved specific embodiment, the second-hand for taking blind rivet 2 there are two being arranged in blind rivet 2 convenient for rotation is taken
Handle 24, second handle 24 include second hand 241 and the second connecting column 242,242 one end of the second connecting column and second handle
Portion 241 is connected, and the other end is connected with the lateral surface of interior direct tube section 21, and the central axis of two second handles 24 is located at together
On one straight line, i.e. two second handles 24 at be symmetrical arranged, it is not only more attractive, and convenient for medical worker both hands hold it is second
Hand 241, medical worker can be rotated by second handle 24 takes blind rivet 2, so that rotation takes blind rivet 2 lighter and rotation efficiency
Higher, second hand 241 is detachably connected with the second connecting column 242 enables second hand 241 to be torn open in blind rivet 2 from taking
It unloads down, reduces storage space, and when to taking blind rivet 2 to carry out disinfection, second hand 241 can be disassembled, reduction disappears
Malicious cost.
By being symmetrical arranged on taking blind rivet 2 there are two second handle 24, medical worker is enabled to pass through second handle
24 rotations take blind rivet 2, so that rotation takes, blind rivet 2 is lighter and rotation efficiency is higher.
As a kind of improved specific embodiment, first hand 151 and the outer surface of second hand 241 are all provided with
It is set to male and fomale(M&F) 153, rubbing between first hand 151 and second hand 241 of going smoothly is made by the setting of male and fomale(M&F) 153
It wipes power to increase, medical worker is avoided to take nail set 1 by the rotation of first hand 151 and taking by the rotation of second hand 241
When blind rivet 2, skids between hand and first hand 151 or second hand 241, rotation efficiency is caused to reduce.
As a kind of improved specific embodiment, cavity is provided on the end face of first handle 15 and second handle 24
154, reduce the weight of first handle 15 Yu second handle 24, enables medical worker when rotation takes nail set 1 with blind rivet 2 is taken
It is enough more labor-saving.
The above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
For those of ordinary skill, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (6)
1. a kind of screw broken nail nail-fetching device includes that can be ground along screw length direction to the bone around screw
Trepan and can be protruded into along screw length direction in bone taking nail set (1) and can screw in take nail set (1) in take nail
Core (2), it is characterised in that: it is described take blind rivet (2) be plugged in take nail set (1) in and be detachably connected between the two, it is described to take
Nail set (1) includes outer direct tube section (11), conical cylinder section (12) and the spliced eye for running through outer direct tube section (11) and conical cylinder section (12)
(13), described that blind rivet (2) is taken to be plugged in spliced eye (13), big opening end and outer direct tube section (11) of the conical cylinder section (12)
One end face is connected, and the small open end internal diameter of the conical cylinder section (12) is adapted with screw diameter；
It is described take blind rivet (2) include the interior direct tube section (21) being plugged in outer direct tube section (11) and with interior direct tube section (21)
Connected shrinkable section (22) in an end face, is provided with internal screw thread (14) in the spliced eye (13), described take sets on blind rivet (2)
It is equipped with and internal screw thread (14) compatible external screw thread (23), shrinkable section (22) includes that can contact in spliced eye (13)
The clamping jaw (221) of wall, the clamping jaw (221) are made of elastic material, and the clamping jaw (221) is provided with multiple and along interior direct tube section
(21) a end face is annularly uniformly distributed, and is formed with shrinkable slot (222) between two clamping jaws (221) of arbitrary neighborhood, described interior
It can be acted in the inner wall of conical cylinder section (12) for shrinkable section (22) during direct tube section (21) rotates in outer direct tube section (11)
Lower contraction internal diameter is until pinching screw；
The medial surface that the clamping jaw (221) is in contact with screw is configured to increase the curved surface with the contact area of screw
(223), and on the cross section on the length direction of clamping jaw (221), the outer profile that the curved surface (223) is constituted is camber line；
The outer direct tube section (11) includes the first guide section (111) and the first thread segment (112), first guide section
(111) medial surface is smooth cylindrical surface, and first guide section (111) is located at conical cylinder section (12) and the first thread segment
(112) between, and the junction of the medial surface of first guide section (111) and the medial surface of conical cylinder section (12) is provided with rounding
Angle；
The interior direct tube section (21) includes the second guide section (211) and the second thread segment (212), second guide section
(211) lateral surface is smooth cylindrical surface, and second guide section (211) is located at shrinkable section (22) and the second thread segment
(212) between；
The distance between first guide section (111) front end and the first thread segment (112) rear end are greater than the clamping jaw
(221) the distance between front end and the second guide section (211) rear end, the external screw thread (23) screw in the internal screw thread (14)
Beginning, clamping jaw (221) front end are connected on the medial surface of the first guide section (111).
2. a kind of screw broken nail nail-fetching device according to claim 1, it is characterised in that: the clamping jaw (221) and screw phase
The raised line (224) that can increase the frictional force between clamping jaw (221) and screw, the raised line are provided on the medial surface of contact
(224) length direction is identical as the length direction of clamping jaw (221), and the cross section of the raised line (224) is set as triangle, institute
Raised line (224) is stated to be provided with multiple and be circlewise distributed along the medial surface of clamping jaw (221).
3. a kind of screw broken nail nail-fetching device according to claim 1, it is characterised in that: described take is provided on nail set (1)
Two take the first handles (15) of nail set (1) convenient for rotation, and the first handle (15) includes first hand (151) and the
One end of one connecting column (152), first connecting column (152) is detachably connected with first hand (151) by screw thread, separately
One end is fixedly connected with outer direct tube section (11) lateral surface, and the central axis of two first handles (15) is located along the same line.
4. a kind of screw broken nail nail-fetching device according to claim 3, it is characterised in that: described take is provided on blind rivet (2)
Two take the second handles (24) of blind rivet (2) convenient for rotation, and the second handle (24) includes second hand (241) and the
One end of two connecting columns (242), second connecting column (242) is detachably connected with second hand (241) by screw thread, separately
One end is connected with the lateral surface of interior direct tube section (21), and the central axis of two second handles (24) is located along the same line.
5. a kind of screw broken nail nail-fetching device according to claim 4, it is characterised in that: the first hand (151) with
The outer surface of the second hand (241) is disposed as that the male and fomale(M&F) (153) of frictional force can be increased.
6. a kind of screw broken nail nail-fetching device according to claim 4 or 5, it is characterised in that: the first handle (15) with
The cavity (154) that can reduce handle weight is provided on the end face of the second handle (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710707006.6A CN107307900B (en) | 2017-08-17 | 2017-08-17 | A kind of screw broken nail nail-fetching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710707006.6A CN107307900B (en) | 2017-08-17 | 2017-08-17 | A kind of screw broken nail nail-fetching device |
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| Publication Number | Publication Date |
|---|---|
| CN107307900A CN107307900A (en) | 2017-11-03 |
| CN107307900B true CN107307900B (en) | 2019-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710707006.6A Active CN107307900B (en) | 2017-08-17 | 2017-08-17 | A kind of screw broken nail nail-fetching device |
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| CN109157279A (en) * | 2018-10-23 | 2019-01-08 | 朱先任 | A kind of orthopaedics guide pin extractor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1935095A (en) * | 2005-09-19 | 2007-03-28 | 伊尼恩有限公司 | Device for removal of fastening means from human tissue |
| CN202027703U (en) * | 2011-04-14 | 2011-11-09 | 刘洪军 | Multipurpose broken nail extractor |
| CN202982203U (en) * | 2012-11-30 | 2013-06-12 | 廖光军 | Radial direction pressurization bone nail removing device |
| CN204581491U (en) * | 2015-05-02 | 2015-08-26 | 魏长月 | Device for taking out broken nail |
| CN204636526U (en) * | 2015-05-02 | 2015-09-16 | 王春萍 | Nail-fetching device |
| CN106175914A (en) * | 2015-05-01 | 2016-12-07 | 董高正 | Device for taking out broken nail |
-
2017
- 2017-08-17 CN CN201710707006.6A patent/CN107307900B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1935095A (en) * | 2005-09-19 | 2007-03-28 | 伊尼恩有限公司 | Device for removal of fastening means from human tissue |
| CN202027703U (en) * | 2011-04-14 | 2011-11-09 | 刘洪军 | Multipurpose broken nail extractor |
| CN202982203U (en) * | 2012-11-30 | 2013-06-12 | 廖光军 | Radial direction pressurization bone nail removing device |
| CN106175914A (en) * | 2015-05-01 | 2016-12-07 | 董高正 | Device for taking out broken nail |
| CN204581491U (en) * | 2015-05-02 | 2015-08-26 | 魏长月 | Device for taking out broken nail |
| CN204636526U (en) * | 2015-05-02 | 2015-09-16 | 王春萍 | Nail-fetching device |
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| Publication number | Publication date |
|---|---|
| CN107307900A (en) | 2017-11-03 |
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