CN2852973Y - Multifunction extraction for orthopedic slip screw - Google Patents
Multifunction extraction for orthopedic slip screw Download PDFInfo
- Publication number
- CN2852973Y CN2852973Y CN 200520124178 CN200520124178U CN2852973Y CN 2852973 Y CN2852973 Y CN 2852973Y CN 200520124178 CN200520124178 CN 200520124178 CN 200520124178 U CN200520124178 U CN 200520124178U CN 2852973 Y CN2852973 Y CN 2852973Y
- Authority
- CN
- China
- Prior art keywords
- screw
- extractor
- thread
- knife
- inner screw
- 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 - Lifetime
Links
Images
Landscapes
- Surgical Instruments (AREA)
Abstract
The utility model relates to a multifunctional extractor of orthopedic stuttering bolt, which comprises an inner screw and an extractor rack. A revolving handle is fixed on the inner screw which also has outer thread. A bone claw with an antiskid groove on the inner side of the inner bone claw is arranged at the inferior extremity of the extractor rack. A thread sleeve is arranged on outer layer of the inner screw. An inner thread is arranged on the inner wall of the thread sleeve and an outer thread on the outer wall of the thread sleeve. The inner screw is screwed into the thread sleeve which has a revolving handle. The extractor rack is connected with a nut and the thread sleeve is screwed into the nut. At the inferior end of the inner screw pole is a knife mouth of the extractor. The butt end shape of the knife mouth of the extractor at the inferior end of the inner screw is in the shape of ''-'' or ''crux'' with a blade on the lateral side. The screwing direction of the outer thread of the inner screw is opposite with that of the outer thread on the outer wall of the screw sleeve so as to shorten the running journey. The utility model is characterized can press tightly the screw, and the knife mouth of the extractor has a blade on the lateral side, thus beneficial to the tight compression of the bone screw which can be screwed out even if the thread is slide.
Description
Technical field
This utility model relates to a kind of medical orthopaedics nail extractor, particularly a kind of multifunctional orthopaedics slipped screw extractor.
Background technology
In the clinical orthopaedics operation, often run into steel plate screw internal fixation postoperative patient in getting the internal fixation process, the situation that bone screw in-line notch or interior hexagonal notch skid appears, and cause bone screw to be difficult to take out.
The patent No. 200420030701, utility model name are called the patent of " synthetism nail extractor ", a kind of synthetism nail extractor is disclosed, belong to medical apparatus and instruments, comprise spiral shell cutter and positioning pipe, knife bar inserts in the positioning pipe, positioning pipe has fastening knife bar of clamp nut and positioning pipe outward, handle of a knife places outside the positioning pipe, knife bar is fixedly mounted in the handle of a knife, the positioning pipe lower end has a side opening to communicate with the bottom through hole, the place's of communicating cavity shape is up big and down small and synthetism ailing head shapes matches, and the bottom through-hole diameter is followed closely diameter less than synthetism ailing head greater than synthetism.This utility model is rational in infrastructure simple, easy to use, when getting nail, the positioning pipe side opening is aimed at the synthetism nail, and through hole places the bottom of synthetism ailing head, on move synthetism ailing head rest risen, screw nut again, the spiral shell cutter is aimed at the synthetism nail edge of a knife held out against, rotate spiral shell cutter handle of a knife this moment, synthetism nail screw type is screwed out, so progressive reciprocal rotation can make the synthetism nail loosening, last smooth the taking-up, effectively reduce broken nail, alleviate the patient suffering from face.
Its claim is that " synthetism nail extractor; comprise spiral shell cutter and positioning pipe; it is characterized in that: knife bar (2) inserts in the positioning pipe (1); fastening knife bar of clamp nut (3) (2) and positioning pipe (1) are arranged outside the positioning pipe (1); handle of a knife (5) places outside the positioning pipe (1); knife bar (2) is fixedly mounted in the handle of a knife (5), positioning pipe (1) lower end has a side opening to communicate with the bottom through hole, the place's of communicating cavity shape is up big and down small and synthetism ailing head shapes matches, and the bottom through-hole diameter is followed closely diameter less than synthetism ailing head greater than synthetism.”
The patent No. 93205627, utility model name are called the patent of " screw extractor ", a kind of screw extractor is disclosed, be open part by revolving, standing part connects by fixed mount, starting bolt [1] top is cylindrical shape, the plane of lower end has circular hole, screwdriver [3] inserts in the circular hole, and is fixing by screw [2].The vertical both sides of sliding hook [7] respectively have two screws, screw [8] is connected with sliding hook [7] by the breaker slot [9] of fixed mount [6], have on the fixed mount horizontal plane and start bolt hole and fixed bolt hole, vertical front side is provided with breaker slot [9], the side is provided with sliding tray [10], and sliding hook [7] inserts in the sliding tray [10].This utility model provides a kind of ideal medical apparatus and instruments for the bone surgery doctor, screw takes out difficult case after being applicable to pressurization and general steel plate screw internal fixation operation, is one of new indispensable operating theater instruments of each big-and-middle-sized hospital, and is easy to use, flexible operation, sterilization is simple.
Its claim is that " a kind of screw extractor; be to open part by revolving; standing part connects by fixed mount; it is characterized in that: starting bolt [1] top is cylindrical shape; the plane of lower end has circular hole; screwdriver [3] inserts in the circular hole, fixing by screw [2], the vertical both sides of sliding hook [7] respectively have two screws, screw [8] is connected with sliding hook [7] by the breaker slot [9] of fixed mount [6], have on the fixed mount horizontal plane and start bolt hole and fixed bolt hole, vertical front side is provided with breaker slot [9], and the side is provided with sliding tray [10], and sliding hook [7] inserts in the sliding tray [10].”
The patent No. 01236021, utility model name are called the patent of " intramedullary nail extractor ", a kind of intramedullary nail extractor safe in utilization is disclosed, the handle that comprises top, the shadoof of bottom, relative with the shadoof bottom be rotatably connected knock body, with knock the butt hook of falling the T-shape of fixedlying connected the body lower end, side hook; Side hook upper end is threaded with shadoof, and side hook lower end has clasp.
Its claim is that " a kind of intramedullary nail extractor comprises the handle (6) on top, the shadoof (4) of bottom; It is characterized in that: shadoof (4) bottom connects one and knocks body (3), knocks the fixedly connected butt hook in body lower end (2).”
The patent No. 94215284, utility model name are called the patent of " spiral femoral head extractor ", disclose a kind of spiral femoral head extractor, use when being suitable for the clinical orthopaedics prosthetic replacement and performing the operation.Be shaped as the upper end and be connected with the T-shape handle, the lower end is the spiral rhizoma sparganic point of a week half that curls.Section of collum femoris is thrust at the tip during use, and pressurization screws in spiral end in the spongy bone, and carrying handle can take out femoral head.That this apparatus has is easy to use, safe, do not damage acetabular bone, be easy to make femoral head advantage, value for clinical application such as to deviate from.
Its claim is that " a kind of spiral femoral head extractor is connected in proper order by rhizoma sparganic tip, helical form head, steady arm, T-shape handle, it is characterized in that head one end that helical form is curled has the rhizoma sparganic point, and the other end is connected with the T-shape handle of support bar.”
The patent No. 95242973, utility model name are called the patent of " medical residual screw extractor ", disclose the medical residual screw extractor that a kind of surgical operation is used, and the back fracture that is suitable for healing is taken out residual screw in medullary cavity.It is inserted in by the clamping bar of the flared hole of tool screw thread bottom, top tool tapering, symmetrical otch and screws on nut on the bar cover of associated end tool nut profile and the clamping bar and form.It has simple in structure, easy to operate, in light weight, through the good advantage of clinical result of use.
Its claim is that " a kind of medical residual screw extractor is characterized in that: the clamping bar of the flared hole of top tool external screw thread, bottom tool tapering, symmetrical otch is inserted in the bar cover of the top tool nut profile that matches, and has nut on clamping bar top.”
The patent No. 97213490, the utility model name is called the patent of " withdrawing device of the residual screw of human fracture's internal fixation ", the withdrawing device of the residual screw of a kind of human fracture's internal fixation is disclosed, described withdrawing device comprises the screwdriver assistor, core drill, residual nail extractor in the bone, perching knife constitutes, it is characterized in that residual nail extractor is by handle in the described bone, boosting-rod, tighten nut, sleeve pipe and collet are formed, be particularly suitable for getting the residual nail that pulls out the sclerotin depths, has reasonable in design, easily make, the characteristics that physical dimension is little, move, carry, use all easily, solved the steel plate that remains in the bone surgery over several years in the skeleton, screw is difficult to get the difficulty of pulling out.
Its claim is the " withdrawing device of the residual screw of a kind of human fracture's internal fixation; described withdrawing device comprises the screwdriver assistor; core drill; residual nail withdrawing device in the bone; perching knife; it is characterized in that residual nail extractor is by collet bar 7 in the described bone, tighten nut 3 and boosting-rod 2, hub 4, sleeve pipe 5 constitutes, wherein, the top of bar 7 is thread segment, the hypomere of bar 7 is provided with collet 6, between bar 7 and the palm handle 1 for being threaded, hub 4 is an integral piece with sleeve pipe 5, for being threaded, the inner conical surface of sleeve pipe 5 bottoms matches with the male cone (strobilus masculinus) of collet 6 between hub 4 and the bar 7, and the both sides of hub 4 are provided with boosting-rod 2.”
Summary of the invention
The purpose of this utility model provides a kind of multifunctional orthopaedics slipped screw extractor that can take out the notch slipped screw.
This utility model multifunctional orthopaedics slipped screw extractor comprises: inner screw and extractor frame, be fixedly connected with the inner screw swing handle on the inner screw, and have external screw thread on the inner screw; The lower end of extractor frame has bone claw, it is characterized in that: the skin of inner screw has a screw shell, have female thread on the inwall of screw shell, have external screw thread on the outer wall of screw shell, inner screw screws in the screw shell, be fixedly connected with the screw shell swing handle on the screw shell: the extractor frame is fixedly connected with nut, and screw shell screws in the nut; The lower end of inner screw has the extractor edge of a knife.
According to described multifunctional orthopaedics slipped screw extractor, it is characterized in that: the external screw thread on the described inner screw is opposite with externally threaded thread rotary orientation on the screw shell outer wall.
According to described multifunctional orthopaedics slipped screw extractor, it is characterized in that: the end surface shape of the extractor edge of a knife of the lower end of described inner screw is an in-line, and the both sides of the in-line edge of a knife have the blade that highly is lower than the in-line edge of a knife.
According to described multifunctional orthopaedics slipped screw extractor, it is characterized in that: the front shape of the extractor edge of a knife of the lower end of described inner screw is that cross is wing, tapered structure, and the top of the extractor edge of a knife is a cross, its side has wing blade; The rear portion has blade on the edge.
According to described multifunctional orthopaedics slipped screw extractor, it is characterized in that: have anti-slip tank on the inner face of described bone claw.
When this utility model uses, the extractor far-end is buckled on the long diaphysis, the extractor edge of a knife under the extractor inner screw is aimed at the notch of bone screw, rotates screw shell then, compresses the notch of the extractor edge of a knife and screw, rotates inner screw then and takes out screw.This utility model is by housing screw that the screw on the orthopaedics patient backbone is pressurizeed, and by means of the lateral blade of the extractor edge of a knife, helps tightening bone screw, notch skidded also can make its back-out smoothly.This utility model not only can take out the bone screw of intact notch but also can take out the bone screw that notch skids, and is simple to operate, safe and reliable.External screw thread on this utility model inner screw can be opposite with externally threaded thread rotary orientation on the screw shell outer wall, the forward travel distance that makes inner screw is external screw thread on the inner screw and the external screw thread pitch sum on the stricture of vagina sleeve outer wall, can shorten stroke, be convenient to shorten the size of whole extractor.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is that the A of Fig. 1 is to view.
Fig. 3 is the end face structure sketch map of in-line band angle of throat mouth for the extractor edge of a knife in this utility model.
Fig. 4 is the end face structure sketch map of the wing band angle of throat of cross mouth for the extractor edge of a knife in this utility model.
In the accompanying drawing: 1, inner screw swing handle; 2, inner screw; 3, screw shell swing handle; 4, screw shell; 5, nut; 6, extractor frame; 7, the extractor edge of a knife; 8, bone claw; 9, anti-slip tank.
The specific embodiment
Below in conjunction with the drawings and specific embodiments this utility model is further described.
This utility model comprises as shown in Figure 1 and Figure 2: extractor frame 6, the lower end of extractor frame 6 has bone claw 8, has anti-slip tank 9 on the inner face of bone claw 8.Have external screw thread on the inner screw 2, be fixedly connected with inner screw swing handle 1 on the inner screw 2, the skin of inner screw 2 has a screw shell 4, have female thread on the inwall of screw shell 4, have external screw thread on the outer wall of screw shell 4, inner screw 2 screws in the screw shell 4, is fixedly connected with screw shell swing handle 3 on the screw shell 4; Extractor frame 6 is fixedly connected with nut 5, and screw shell 4 screws in the nut 5; The lower end of inner screw 2 has.
Externally threaded thread rotary orientation on external screw thread of the present utility model and screw shell 4 outer walls can be identical also can be opposite.
When the external screw thread on the inner screw 2 is opposite with externally threaded thread rotary orientation on screw shell 4 outer walls, the forward travel distance that makes inner screw is external screw thread pitch on the inner screw and the external screw thread pitch sum on the screw shell outer wall, can shorten stroke, be convenient to shorten the size of whole extractor.When thread rotary orientation was identical, the externally threaded pitch on the inner screw 2 should be less than the external screw thread pitch on the stricture of vagina sleeve outer wall.External screw thread on the inner screw 2 is preferably identical with bone screw pitch, makes inner screw and screw advance and retreat together.
The extractor edge of a knife 7 in this utility model can be made into the multiple shape edge of a knife and be used for different bone screw.Can adopt the edge of a knife of existing common shape, as in-line, interior hexagon etc.Also can adopt the custom-designed edge of a knife of this utility model, as in-line band angle of throat mouth, the wing band angle of throat of cross mouth.
In-line band angle of throat mouth is used for flat recess mouth screw as shown in Figure 3.The end surface shape of the extractor edge of a knife 7 of the lower end of inner screw 2 is an in-line, and the both sides of the in-line edge of a knife have the blade that highly is lower than the in-line edge of a knife.
The wing band angle of throat of cross mouth is used for the screw of interior hexagonal notch as shown in Figure 4.The front shape of the extractor edge of a knife 7 of the lower end of inner screw 2 is that cross is wing, and tapered structure is shorter in length than hexagonal notch in the bone screw, and the widest part of the wing is greater than the notch Breadth Maximum.The top of the extractor edge of a knife 7 is a cross, and its side has wing blade; The rear portion has blade on the edge.
When this utility model uses, the extractor far-end is buckled on the long diaphysis, the extractor edge of a knife under the extractor inner screw is aimed at the notch of bone screw, rotates screw shell then, compresses the notch of the extractor edge of a knife and screw.Rotate inner screw then and take out screw.This utility model is because can housing screw, and extractor edge of a knife side has blade, helps tightening bone screw, screw socket skidded also can make its back-out.This utility model is simple to operate, and is safe and reliable.
Claims (5)
1, a kind of multifunctional orthopaedics slipped screw extractor comprises: inner screw (2) and extractor frame (6), be fixedly connected with inner screw swing handle (1) on the inner screw (2), and inner screw has external screw thread on (2); The lower end of extractor frame (6) has bone claw (8), it is characterized in that: the skin of inner screw (2) has a screw shell (4), have female thread on the inwall of screw shell (4), have external screw thread on the outer wall of screw shell (4), inner screw (2) screws in the screw shell (4), is fixedly connected with screw shell swing handle (3) on the screw shell (4); Extractor frame (6) is fixedly connected with nut (5), and screw shell (4) screws in the nut (5); The lower end of inner screw (2) has the extractor edge of a knife (7).
2, multifunctional orthopaedics slipped screw extractor according to claim 1 is characterized in that: the external screw thread on the described inner screw (2) is opposite with externally threaded thread rotary orientation on screw shell (4) outer wall.
3, multifunctional orthopaedics slipped screw extractor according to claim 1 and 2, it is characterized in that: the end surface shape of the extractor edge of a knife (7) of the lower end of described inner screw (2) is an in-line, and the both sides of the in-line edge of a knife have the blade that highly is lower than the in-line edge of a knife.
4, multifunctional orthopaedics slipped screw extractor according to claim 1 and 2, it is characterized in that: the front shape of the extractor edge of a knife (7) of the lower end of described inner screw (2) is that cross is wing, tapered structure, the top of the extractor edge of a knife (7) is a cross, and its side has wing blade; The rear portion has blade on the edge.
5, multifunctional orthopaedics slipped screw extractor according to claim 1 is characterized in that: have anti-slip tank (9) on the inner face of described bone claw (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520124178 CN2852973Y (en) | 2005-11-07 | 2005-11-07 | Multifunction extraction for orthopedic slip screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520124178 CN2852973Y (en) | 2005-11-07 | 2005-11-07 | Multifunction extraction for orthopedic slip screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2852973Y true CN2852973Y (en) | 2007-01-03 |
Family
ID=37579598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520124178 Expired - Lifetime CN2852973Y (en) | 2005-11-07 | 2005-11-07 | Multifunction extraction for orthopedic slip screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2852973Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100339054C (en) * | 2005-11-19 | 2007-09-26 | 谢福广 | Multifunctional device for screwing out bone nail |
| CN105769326A (en) * | 2016-01-08 | 2016-07-20 | 深圳市第二人民医院 | Surgery binocular locator |
-
2005
- 2005-11-07 CN CN 200520124178 patent/CN2852973Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100339054C (en) * | 2005-11-19 | 2007-09-26 | 谢福广 | Multifunctional device for screwing out bone nail |
| CN105769326A (en) * | 2016-01-08 | 2016-07-20 | 深圳市第二人民医院 | Surgery binocular locator |
| CN105769326B (en) * | 2016-01-08 | 2017-12-29 | 深圳市第二人民医院 | One kind operation bitubular locator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100339054C (en) | Multifunctional device for screwing out bone nail | |
| CN102415913A (en) | Femoral shaft fracture internally fixing instrument | |
| CN102525632A (en) | Locking steel plate and collimation assembly component thereof | |
| CN2873119Y (en) | Spine U-shape vertebral pedicle nail | |
| CN108186092A (en) | The Universal pedicle screw that undercut mark easily locks | |
| CN2852973Y (en) | Multifunction extraction for orthopedic slip screw | |
| CN104783881B (en) | A kind of clavicular fracture Wicresoft Medullary fixation device | |
| CN102813544B (en) | External fixing rack for hip fracture | |
| CN201070384Y (en) | Combined fracture fixing device | |
| CN203815572U (en) | Orthopedics screw taking device allowing screws to be taken out easily | |
| CN110974387A (en) | Novel supporting and pressurizing screw for femoral neck fracture | |
| CN217886178U (en) | Pressurization locking screw and implantation tool | |
| CN2577787Y (en) | Self locked anatomic form hip driving steel plate and its pecial positioning guide | |
| CN202288431U (en) | Bone fracture reductor for four limbs | |
| CN206792478U (en) | Bone cement screw | |
| CN211355839U (en) | Intramedullary nail pressurizing rod without damaging locking screw thread | |
| CN214966490U (en) | Intramedullary nail tail nail holding device | |
| CN206372120U (en) | A kind of gripping mechanism for taking out bone inner bolt | |
| CN113729903B (en) | Femoral intramedullary nail fixation system | |
| CN212165878U (en) | Surgical nail-taking device for orthopedic medical treatment | |
| CN202409104U (en) | Steel plate with lock and aiming assembly component thereof | |
| CN212415870U (en) | Clavicle intramedullary needle convenient to push and fix | |
| CN212575024U (en) | Femoral stem pulling device and hip joint surgical instrument comprising same | |
| CN2303594Y (en) | Adjustable double-locking type intramedullary nail | |
| CN204033462U (en) | A kind of ulna intramedullary nail with lock |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20051107 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |