CN215273244U - Hammer toe combination therapy implant - Google Patents
Hammer toe combination therapy implant Download PDFInfo
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- CN215273244U CN215273244U CN202021864750.0U CN202021864750U CN215273244U CN 215273244 U CN215273244 U CN 215273244U CN 202021864750 U CN202021864750 U CN 202021864750U CN 215273244 U CN215273244 U CN 215273244U
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- section
- screw
- guide pin
- combination therapy
- thread
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- 239000007943 implant Substances 0.000 title claims abstract description 28
- 206010061159 Foot deformity Diseases 0.000 title claims abstract description 27
- 208000000013 Hammer Toe Syndrome Diseases 0.000 title claims abstract description 27
- 238000002648 combination therapy Methods 0.000 title claims abstract description 22
- 239000012634 fragment Substances 0.000 claims abstract description 9
- 230000000149 penetrating effect Effects 0.000 claims abstract description 7
- 238000003780 insertion Methods 0.000 claims description 20
- 230000037431 insertion Effects 0.000 claims description 20
- 241001290722 Odontonema Species 0.000 claims description 9
- 239000011295 pitch Substances 0.000 claims description 6
- 238000002513 implantation Methods 0.000 abstract description 8
- 208000010392 Bone Fractures Diseases 0.000 abstract description 3
- 206010017076 Fracture Diseases 0.000 abstract description 3
- 230000005489 elastic deformation Effects 0.000 abstract 1
- 230000004927 fusion Effects 0.000 abstract 1
- 210000000988 bone and bone Anatomy 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 241000587161 Gomphocarpus Species 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 206010061218 Inflammation Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000002266 amputation Methods 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001054 cortical effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000002594 fluoroscopy Methods 0.000 description 1
- 230000004054 inflammatory process Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
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Abstract
The utility model discloses a hammer toe combined therapy implant, which comprises a first screw and a second screw, wherein the first screw is provided with a first guide pin hole which is arranged along the axis in a penetrating way, the rear end part of the first guide pin hole is provided with a reaming hole and is formed with a first driving groove, and the first screw is provided with an inserting groove which penetrates through the inside and the outside of the reaming hole; this second screw is equipped with and runs through the second guide pin hole of arranging along the axis, and this second screw front end portion is established to inserting the section, and this inserts the section and has a plurality of unsettled shell fragments that can elastic deformation who arranges, and this shell fragment lateral wall is protruding to be equipped with the fastener, should insert the section and insert in the reaming and the fastener inserts the slot, and this first guide pin hole and second guide pin hole align. It has the following advantages: reduces or avoids the risk of fracture after implantation, and can effectively realize multi-joint fusion.
Description
Technical Field
The utility model relates to a medical appliance, in particular to a hammer toe combined therapy implant.
Background
The hammer toe is caused by mechanical factors and inflammation to generate a 'buckling effect' to the hammer toe deformity, and is divided into mild, moderate and severe, and the moderate and above are subjected to doctor intervention treatment, if the amputation is possibly caused by not performing effective treatment, and the like. Existing hammertoe implants, such as screws for correcting hammertoe, include a head and a shank. The head has a serrated edge; the first end of the nail body and the nail head are integrally formed, the outer wall of the nail body is provided with threads, and a hole which simultaneously penetrates through the nail body and the nail head is formed in the axial direction of the nail body. The axial bore of the screw is too long, with the risk of fracture after implantation.
SUMMERY OF THE UTILITY MODEL
The utility model provides a hammer toe combined therapy implant, which overcomes the defects of hammer toe combined therapy implants in the background technology.
The utility model provides an adopted technical scheme of its technical problem is: the hammer-toe combined therapeutic implant comprises a first screw and a second screw, wherein the first screw is provided with a first guide pin hole which is arranged in a penetrating manner along the axis, the rear end part of the first guide pin hole is provided with a hole expanding and a first driving groove, and the first screw is provided with an inserting groove which penetrates through the inside and the outside of the hole expanding; the second screw is provided with a second guide pin hole which is arranged in a penetrating mode along the axis, the front end portion of the second screw is set to be an insertion section, the insertion section is provided with a plurality of elastic pieces which are arranged in a hanging mode and can elastically deform, a clamping piece is arranged on the outer side wall of each elastic piece in a protruding mode, and the insertion section is inserted into the expansion hole and inserted into the slot of the clamping piece.
In one embodiment: the terminal surface is equipped with the groove of stepping down that runs through inside and outside and makes the insertion section be formed with a plurality of shell fragments through the groove of stepping down along the axis is concave before this insertion section.
In one embodiment: the second screw is also provided with a threaded section, the inserting section is positioned in front of the threaded section, the outer diameter of the threaded section is larger than the maximum outer diameter of the inserting section so as to form a step surface arranged forwards, and the step surface abuts against the rear end wall of the first screw.
In one embodiment: this first guide pin hole includes first guide pin section and above-mentioned reaming, and this second guide pin hole has the second guide pin section and corresponds the section of stepping down of shell fragment, and this first guide pin section corresponds with second guide pin section.
In one embodiment: the first lead segment and the second lead segment are aligned.
In one embodiment: the clamping piece is convexly arranged at the front end part of the outer side wall of the elastic sheet.
In one embodiment: the front end of the elastic sheet is provided with a guide inclined plane or a guide conical surface.
In one embodiment: the rear end part of the second guide pin hole is expanded to form a second driving groove.
In one embodiment: the first screw external thread comprises a first density thread section, a depth thread section and a first toothed thread section which are arranged in front and back, the first density thread section is arranged at the screw tip part and is set into density threads with different thread pitches, and the thread teeth of the depth thread section are provided with grooves at even intervals along the screw to form depth thread teeth.
In one embodiment: the first density thread section is provided with a first cutting groove.
In one embodiment: the clamping piece of the second screw is provided with a second density thread section, the second density thread section is provided with density threads with different thread pitches, the thread section is provided with a second toothed thread section, and the second toothed thread section is provided with a second cutting groove.
Compared with the background technology, the technical scheme has the following advantages: including two screws, the insertion section of second screw inserts in the reaming of first screw and the fastener of the shell fragment of second screw inserts in the slot of first screw, first screw and the integrative linkage of second screw, it is fixed to realize that two kinds of screws are drawn, one of them, the axial hole length of screw is shorter, improve fracture resistance, reduce or avoid implanting the cracked risk of taking place after, its two, can effectively realize the multiple joint and fuse, its three, the fastener inserts in the slot, under the shell fragment is under self elasticity effect, can avoid the fastener to break away from the slot, so the two dress connects firmly reliable and stable, can increase the holistic resistance to plucking of screw. The dense and dense threads are arranged to increase the anti-rotation and anti-pulling force. The deep and shallow screw teeth are arranged to increase the anti-rotation and anti-extraction force. The toothed thread section is arranged, so that the cutting capacity during implantation is improved, and the insertion resistance is reduced.
Drawings
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
FIG. 1 is a schematic front view of an embodiment hammertoe combination therapy implant.
Fig. 2 is a schematic top view of an embodiment hammertoe combination therapy implant.
Fig. 3 is a schematic cross-sectional view of an embodiment hammertoe combination therapy implant.
FIG. 4 is a front view of a first screw of the embodiments.
FIG. 5 is a front view of a second screw of the embodiments.
FIG. 6 is a top view of a second screw of the embodiments.
Fig. 7 is a left side schematic view of a second screw of the embodiment.
FIG. 8 is a schematic right view of a second screw according to the embodiment.
Description of reference numerals: the first guide pin structure comprises a first screw 1, a first guide pin hole 11, a first guide pin section 111, a hole expanding 112, a slot 113, a first density thread section 12, a depth thread section 13, a first toothed thread section 14 and a first cut groove 15;
the second screw 2, the second guide pin hole 21, the second guide pin section 211, the abdication section 212, the quincuncial groove 213, the threaded section 22, the insertion section 23, the abdication groove 231, the elastic sheet 232, the latch 233, and the second cutting groove 24.
Detailed Description
Referring to fig. 1 to 8, the hammertoe combination therapy implant includes a first screw 1 and a second screw 2; the first screw 1 is provided with a first guide pin hole 11 which is arranged in a penetrating way along the axis, the first guide pin hole 11 comprises a first guide pin section 111 which is arranged in a front-back connection way and a hole expansion 112, the hole expansion 112 is completely arranged into a first driving groove or the rear part is arranged into a first driving groove, and the first screw 1 is provided with an inserting groove 113 which penetrates through the inside and the outside of the hole expansion 112; the second screw 2 is provided with a second guide pin hole 21 which is arranged in a penetrating way along the axis, and the second guide pin hole 21 is provided with a second guide pin section 211 and a yielding section 212 corresponding to the elastic sheet which can elastically deform; the second screw 2 is provided with a thread section 22 and an insertion section 23, the insertion section 23 is positioned in front of the thread section 22, the outer diameter of the thread section 22 is larger than that of the insertion section 23 to form a step surface arranged forwards, the front end surface of the insertion section 23 is concavely provided with an abdication groove 231 which penetrates inwards and outwards along the axis, and the insertion section 23 is formed with a plurality of elastic sheets 232 which are arranged in a suspended manner through the abdication groove 231, if two elastic sheets 232 which are arranged in a radial symmetrical manner are formed, the outer side wall of each elastic sheet 232 is a cylindrical wall part in a free state, and the elastic sheets can be elastically deformed due to the suspended arrangement; the outer side wall of the elastic sheet 232 is provided with a clamping piece 233 in a protruding way. The insertion section 23 is inserted into the counterbore 112 and the latch 233 is inserted into the slot 113, the step surface abuts against the rear end wall of the first screw 1, the first guide pin hole 11 is aligned with the second guide pin hole 21, and the first guide pin section 111 is aligned with the second guide pin section 211 to enable the bone guide pin to be fittingly inserted. Insert in the reaming through inserting the section, and, in the fastener inserted the slot, make first screw and second screw dress connect together, make the two can an organic whole linkage, and under the shell fragment is under self elasticity effect, can avoid the fastener to break away from the slot, make drawing of two kinds of screws fixed.
In this embodiment: the clip 233 is protruded at the front end of the outer side wall of the elastic sheet 232, and the front end of the elastic sheet 232 is provided with a guiding inclined plane or a guiding conical surface so that the elastic sheet can be retracted into the enlarged hole, and the elastic sheet can be reset when the fastener is aligned with the slot so that the fastener can be inserted into the slot. The rear end of the second guide pin hole 21 is extended to form a second driving groove, such as a quincunx groove 213, which has more reliable strength when used in cooperation with an instrument, but is not limited to the quincunx groove 213, and can be a hexagonal groove, a straight groove, a cross groove or a polygonal groove as required.
The external thread of the first screw 1 comprises a first density thread section 12, a depth thread section 13 and a first tooth-shaped thread section 14 which are arranged in front and back, the first density thread section 12 is arranged at the screw tip part and is provided with density threads with unequal thread pitches, and the first density thread section 12 is provided with a first cut groove 15 so as to efficiently implant according to an implant bone sequence and improve the holding force of locking into a cortical layer; the thread of the deep and shallow thread section 13 is recessed with grooves at regular intervals along the spiral to form deep and shallow thread for speeding up the filling and cutting and increasing the holding force of the screw after filling. The engaging member 233 of the second screw 2 is provided with a second sparse-dense thread section which is a sparse-dense thread having an unequal pitch, the sparse-dense thread is an external thread for the insertion section, the thread section 22 is provided with a second toothed thread section which is provided with a second cutting groove 24, thereby improving the holding force after the screw is implanted.
The hammer toe combination therapy implant implantation method comprises the following steps: selecting a patient with the indication, placing a body position and performing an operation, incising the skin, and moving soft tissues, nerves and blood vessels; drilling a hole from the distal phalanx segment to the proximal phalanx segment with a drill bit through the distal, middle and proximal phalanges; then a bone guide needle with 0.9MM is driven in, and the scale is read; selecting a first screw and a second screw which are adaptive to the diameter and the length, guiding through a first guide pin, implanting the first screw to fix the proximal joint, implanting the second screw by the same method, screwing the proximal end of the second screw into the rear part of the first screw to enlarge and clamp the rear part of the first screw, fixing the distal joint, and realizing the integral fixation of the first screw and the second screw; and (5) performing CT fluoroscopy to implant the position, then taking out the bone conduction guide needle, completing wound cleaning and disinfection treatment, and completing the operation after suturing. Wherein: the first screw and the second screw are implanted under the guidance of the bone guide needle, so that the elastic sheet of the second screw capable of elastically deforming is clamped in the clamping hole matched with the first screw in the implantation rotating process to complete the implantation. The implantation of the specific embodiment does not need to cut off the pathological change part of the phalangeal joint and then implant nails, but does not need to cut off the phalangeal joint for implantation correction, thereby reducing the clinical difficulty and saving the operation time.
The above description is only a preferred embodiment of the present invention, and therefore the scope of the present invention should not be limited by this description, and all equivalent changes and modifications made within the scope and the specification of the present invention should be covered by the present invention.
Claims (11)
1. A hammertoe combination therapy implant comprising a first screw and a second screw, characterized in that: the first screw is provided with a first guide pin hole which is arranged in a penetrating way along the axis, the rear end part of the first guide pin hole is provided with a hole expanding and a first driving groove, and the first screw is provided with a slot which penetrates through the hole expanding and the inner part and the outer part; the second screw is provided with a second guide pin hole which is arranged in a penetrating mode along the axis, the front end portion of the second screw is set to be an insertion section, the insertion section is provided with a plurality of elastic pieces which are arranged in a hanging mode and can elastically deform, a clamping piece is arranged on the outer side wall of each elastic piece in a protruding mode, and the insertion section is inserted into the expansion hole and inserted into the slot of the clamping piece.
2. The hammertoe combination therapy implant according to claim 1, wherein: the terminal surface is equipped with the groove of stepping down that runs through inside and outside and makes the insertion section be formed with a plurality of shell fragments through the groove of stepping down along the axis is concave before this insertion section.
3. The hammertoe combination therapy implant according to claim 1, wherein: the second screw is also provided with a threaded section, the inserting section is positioned in front of the threaded section, the outer diameter of the threaded section is larger than the maximum outer diameter of the inserting section so as to form a step surface arranged forwards, and the step surface abuts against the rear end wall of the first screw.
4. The hammertoe combination therapy implant according to claim 3, wherein: this first guide pin hole includes first guide pin section and above-mentioned reaming, and this second guide pin hole has the second guide pin section and corresponds the section of stepping down of shell fragment, and this first guide pin section corresponds with second guide pin section.
5. The hammertoe combination therapy implant according to claim 4, wherein: the first lead segment and the second lead segment are aligned.
6. The hammertoe combination therapy implant according to claim 1, wherein: the clamping piece is convexly arranged at the front end part of the outer side wall of the elastic sheet.
7. The hammertoe combination therapy implant according to claim 1, wherein: the front end of the elastic sheet is provided with a guide inclined plane or a guide conical surface.
8. The hammertoe combination therapy implant according to claim 1, wherein: the rear end part of the second guide pin hole is expanded to form a second driving groove.
9. The hammer toe combination therapy implant according to any one of claims 1 to 8, wherein: the first screw external thread comprises a first density thread section, a depth thread section and a first toothed thread section which are arranged in front and back, the first density thread section is arranged at the tip part of the first screw and is designed into density threads with different thread pitches, and the thread teeth of the depth thread section are provided with grooves at even intervals along the screw to form depth thread teeth.
10. The hammertoe combination therapy implant according to claim 9, wherein: the first density thread section is provided with a first cutting groove.
11. The hammer toe combination therapy implant according to claim 3 or 4 or 5, wherein: the clamping piece of the second screw is provided with a second density thread section, the second density thread section is provided with density threads with different thread pitches, the thread section is provided with a second toothed thread section, and the second toothed thread section is provided with a second cutting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021864750.0U CN215273244U (en) | 2020-08-31 | 2020-08-31 | Hammer toe combination therapy implant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021864750.0U CN215273244U (en) | 2020-08-31 | 2020-08-31 | Hammer toe combination therapy implant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215273244U true CN215273244U (en) | 2021-12-24 |
Family
ID=79512209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021864750.0U Active CN215273244U (en) | 2020-08-31 | 2020-08-31 | Hammer toe combination therapy implant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215273244U (en) |
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2020
- 2020-08-31 CN CN202021864750.0U patent/CN215273244U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231007 Address after: 200000 Room 203, building 4, No. 590, Ruiqing Road, Pudong New Area, Shanghai Patentee after: Shanghai Dabo Medical Technology Co.,Ltd. Patentee after: Zhangzhou Third Hospital Address before: 200000 Room 203, building 4, No. 590, Ruiqing Road, Pudong New Area, Shanghai Patentee before: Shanghai Dabo Medical Technology Co.,Ltd. |
|
| TR01 | Transfer of patent right |