CN219896037U - Femur handle distal nail hole positioning device - Google Patents
Femur handle distal nail hole positioning device Download PDFInfo
- Publication number
- CN219896037U CN219896037U CN202320935807.9U CN202320935807U CN219896037U CN 219896037 U CN219896037 U CN 219896037U CN 202320935807 U CN202320935807 U CN 202320935807U CN 219896037 U CN219896037 U CN 219896037U
- Authority
- CN
- China
- Prior art keywords
- hole
- femoral stem
- positioning
- nail hole
- connecting piece
- 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
- 210000000689 upper leg Anatomy 0.000 title claims abstract description 13
- 238000005553 drilling Methods 0.000 claims description 9
- 210000001503 joint Anatomy 0.000 claims description 4
- 238000004080 punching Methods 0.000 abstract description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 9
- 229910052719 titanium Inorganic materials 0.000 description 9
- 239000010936 titanium Substances 0.000 description 9
- 238000001356 surgical procedure Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 210000004394 hip joint Anatomy 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000001624 hip Anatomy 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000011541 total hip replacement Methods 0.000 description 1
Landscapes
- Prostheses (AREA)
Abstract
The utility model relates to the technical field of medical appliances and discloses a femur handle distal end nail hole positioning device which comprises a first connecting piece, a second connecting piece, a sleeve and a guide pin, wherein the first connecting piece comprises a first extending part and a second extending part, the second extending part vertically extends downwards, the first extending part is positioned at one side of the second extending part, the end part of the first extending part is provided with a limiting structure which is matched with the upper end of a femur handle prosthesis, the second extending part is detachably and fixedly connected with the second connecting piece, and the lower end of the second connecting piece is provided with a guide hole corresponding to a femur handle distal end nail hole; the sleeve passes through the guide hole and extends into alignment with the distal pin hole of the femoral stem; the utility model provides a femur handle distal nail hole positioning device, which solves the problem of shortage of special positioning tools when using a distal punching prosthesis.
Description
Technical Field
The utility model relates to the technical field of medical appliances, in particular to a femur handle distal nail hole positioning device.
Background
The total hip revision surgery is a surgery in which joint replacement is performed again after the failure of the primary total hip replacement surgery or because the age of the primary replacement is long, and the primary implanted prosthesis needs to be removed before a new prosthesis is implanted. In terms of femur side, the general revision prosthesis is longer and thicker than the primary prosthesis, for example, when performing femoral stem revision surgery, the design of punching the distal end of the femoral stem is adopted, and after the prosthesis is implanted, the distal end of the prosthesis is fixed by using titanium nails, so that the prosthesis is ensured not to sink.
When using a distally perforated prosthesis, it is difficult to effectively locate the nail hole during surgery, affecting the surgical procedure. In addition, whether or not to accurately screw the fixed titanium pin into the prosthesis opening and the convenience of the instrument use become problems that need to be solved at present.
Accordingly, there is a need to design and develop a femoral stem distal pin hole positioning device to address the shortage of special positioning tools when using distally perforated prostheses so that the fixation titanium pins can be accurately threaded into the prosthetic holes.
Disclosure of Invention
The utility model aims to provide a femur stem distal nail hole positioning device which is used for solving at least one of the problems in the prior art.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides a femur handle distal end nail hole positioner, includes first connecting piece, second connecting piece, sleeve and guide pin, first connecting piece includes first extension and second extension, the vertical downwardly extending of second extension, first extension is located one side of second extension, the tip of first extension is equipped with the limit structure with femur handle prosthesis upper end cooperation installation, detachable fixed connection between second extension and the second connecting piece, the lower extreme of second connecting piece is equipped with the guiding hole that corresponds with femur handle distal end nail hole; the sleeve passes through the guide hole and extends to a position aligned with the distal nail hole of the femoral stem, the guide pin extends along the sleeve and passes through the distal nail hole of the femoral stem for positioning the center of the distal nail hole of the femoral stem, and a drilling guide space convenient for a long hollow drill bit to drill is formed between the guide pin and the sleeve.
In the technical scheme, as the end part of the first extension part is provided with the limit structure which is matched with the upper end of the femoral stem prosthesis, the rotation can be avoided, and the follow-up nail hole driving is facilitated. Because the second extension part is detachably and fixedly connected with the second connecting piece, the second connecting piece with different types can be conveniently matched according to the lengths of the femoral stem prostheses with different types. Because the lower end of the second connecting piece is provided with the guide hole corresponding to the distal nail hole of the femoral stem, the guiding and positioning of the sleeve are conveniently realized. Because the sleeve passes the guiding hole and extends to the position of aligning with the distal nail hole of the femoral stem, the one end of sleeve passes the guiding hole, and the other end aligns with the distal nail hole of the femoral stem, and then telescopic setting provides guiding action for the guide pin, makes things convenient for the guide pin to stretch into the distal nail hole of the femoral stem and fix a position the center of distal nail hole of the femoral stem. Because form the drilling guide space that is convenient for long cavity drill bit to carry out drilling operation between guide pin and the sleeve, then conveniently stretch into the drill bit guide space with long cavity drill bit afterwards, promptly after the hollow position of long cavity drill bit inserts the guide pin, along guide pin direction, bore into, form the nail hole to be convenient for later stage titanium nail screw in.
According to the technical scheme, the problem of shortage of special positioning tools when the far-end perforated prosthesis is used at present is solved, the structural design is reasonable, the use is reliable, the fixed titanium nails can be accurately screwed into the openings of the prosthesis, and powerful instrument assistance is provided for hip joint replacement.
Further, in order to facilitate the operation of the shape of the first connection member, the first extension portion is inclined upward and backward and downwardly to the upper end of the second extension portion.
Further, in order to facilitate the handheld positioning of the first connecting piece, a handheld handle is arranged at the top of the first connecting piece.
Further, in order to improve the reliability of the hand holding, the hand holding handle comprises a plurality of smooth convex structures.
Further, in order to improve the structural stability of the first connecting piece, the first connecting piece is of an integrated structure.
Further, the second extension part is provided with a first positioning hole, a threaded hole and a second positioning hole in sequence along the length direction of the second extension part, the second connecting piece is provided with two positioning rods which are respectively in butt joint with the first positioning hole and the second positioning hole, the second connecting piece is also provided with a connecting hole corresponding to the threaded hole, a bolt is arranged between the second extension part and the second connecting piece, and the bolt is in threaded fit with the threaded hole after passing through the connecting hole.
The first locating hole and the second locating hole dock with two locating levers on the second connecting piece respectively, can realize the purpose of assistance-localization real-time at the in-process of first connecting piece and second connecting piece installation, afterwards accessible bolt is revolved and is twisted the fixed connection who realizes first connecting piece and second connecting piece, and this kind of structure provides convenient operation structure for the detachable fixed mounting of first connecting piece and second connecting piece.
Further, in order to achieve a better positioning anti-rotation effect, the limiting structure comprises a positioning protrusion matched with the shape of the groove at the upper end of the femoral stem prosthesis, and the positioning protrusion comprises a first positioning protrusion and a second positioning protrusion which are oppositely arranged.
Further, in order to be convenient for realize the bellied shaping of first location arch and second location and be convenient for realize the protruding and second location of first location and the location anti-rotation effect of femoral stem prosthesis upper end, the tip downwardly extending of first extension has the extension post, protruding integrated into one piece of first location arch and second location is at the lower extreme of extension post.
Further, in order to adjust the extension length of guide pin according to different user demands, telescopic one end is equipped with adjustable location portion, the one end and the telescopic one end threaded connection of adjustable location portion, the other end and the spacing portion butt of guide pin of adjustable location portion.
Further, in order to match the sleeve and the guide pin with the distal nail holes of the femoral stem, the number of the sleeve and the guide pin is consistent with the number of the distal nail holes of the femoral stem.
The beneficial effects of the utility model are as follows: in the technical scheme, as the end part of the first extension part is provided with the limit structure which is matched with the upper end of the femoral stem prosthesis, the rotation can be avoided, and the follow-up nail hole driving is facilitated. Because the second extension part is detachably and fixedly connected with the second connecting piece, the second connecting piece with different types can be conveniently matched according to the lengths of the femoral stem prostheses with different types. Because the lower end of the second connecting piece is provided with the guide hole corresponding to the distal nail hole of the femoral stem, the guiding and positioning of the sleeve are conveniently realized. Because the sleeve passes the guiding hole and extends to the position of aligning with the distal nail hole of the femoral stem, the one end of sleeve passes the guiding hole, and the other end aligns with the distal nail hole of the femoral stem, and then telescopic setting provides guiding action for the guide pin, makes things convenient for the guide pin to stretch into the distal nail hole of the femoral stem and fix a position the center of distal nail hole of the femoral stem. Because form the drilling guide space that is convenient for long cavity drill bit to carry out drilling operation between guide pin and the sleeve, then conveniently stretch into the drill bit guide space with long cavity drill bit afterwards, promptly after the hollow position of long cavity drill bit inserts the guide pin, along guide pin direction, bore into, form the nail hole to be convenient for later stage titanium nail screw in.
According to the technical scheme, the problem of shortage of special positioning tools when the far-end perforated prosthesis is used at present is solved, the structural design is reasonable, the use is reliable, the fixed titanium nails can be accurately screwed into the openings of the prosthesis, and powerful instrument assistance is provided for hip joint replacement.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view showing a partial structure of a second extension part and a second connection member in an installed state according to the present utility model;
fig. 3 is a schematic structural view of a limiting structure in the present utility model.
In the figure: a first connector 1; a first extension 1.1; a second extension 1.2; a second connector 2; a sleeve 3; a guide pin 4; a femoral stem prosthesis 5; a distal femoral stem nail hole 6; a guide hole 7; a hand-held handle 8; a first positioning hole 9; a threaded hole 10; a second positioning hole 11; a positioning rod 12; a first positioning protrusion 14; a second positioning projection 15; an extension column 16; an adjustable positioning portion 17; and a bolt 18.
Detailed Description
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the present utility model will be briefly described below with reference to the accompanying drawings and the description of the embodiments or the prior art, and it is obvious that the following description of the structure of the drawings is only some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art. It should be noted that the description of these examples is for aiding in understanding the present utility model, but is not intended to limit the present utility model.
Example 1:
as shown in fig. 1-3, the present embodiment provides a distal femoral stem nail hole positioning device, which includes a first connecting member 1, a second connecting member 2, a sleeve 3 and a guide pin 4, wherein the first connecting member 1 includes a first extension portion 1.1 and a second extension portion 1.2, the second extension portion 1.2 extends vertically downward, the first extension portion 1.1 is located at one side of the second extension portion 1.2, a limit structure mounted in cooperation with the upper end of a femoral stem prosthesis 5 is provided at the end of the first extension portion 1.1, a detachable fixed connection is provided between the second extension portion 1.2 and the second connecting member 2, and a guide hole 7 corresponding to a distal femoral stem nail hole 6 is provided at the lower end of the second connecting member 2; the sleeve 3 passes through the guide hole 7 and extends to a position aligned with the femoral stem distal nail hole 6, the guide pin 4 extends along the sleeve 3 and passes through the femoral stem distal nail hole 6 for positioning the center of the femoral stem distal nail hole 6, and a drilling guide space convenient for a long hollow drill bit to drill is formed between the guide pin 4 and the sleeve 3.
In the technical scheme, as the end part of the first extension part 1.1 is provided with the limit structure which is matched with the upper end of the femoral stem prosthesis 5, the rotation can be avoided, and the follow-up nail hole driving is facilitated. Because of the detachable fixed connection between the second extension part 1.2 and the second connecting piece 2, the second connecting piece 2 with different models can be matched with the femoral stem prosthesis 5 with different models according to the length of the femoral stem prosthesis. Because the lower end of the second connecting piece 2 is provided with the guide hole 7 corresponding to the distal nail hole 6 of the femoral stem, the guiding and positioning of the sleeve 3 are conveniently realized. Since the sleeve 3 passes through the guide hole 7 and extends to a position aligned with the femoral stem distal nail hole 6, one end of the sleeve 3 passes through the guide hole 7, and the other end is aligned with the femoral stem distal nail hole 6, the arrangement of the sleeve 3 provides a guiding function for the guide pin 4, facilitating the insertion of the guide pin 4 into the femoral stem distal nail hole 6 and positioning of the center of the femoral stem distal nail hole 6. Because form the drilling guide space that is convenient for long cavity drill bit to carry out drilling operation between guide pin 4 and the sleeve 3, then conveniently stretch into the drill bit guide space with long cavity drill bit afterwards, namely after the hollow position of long cavity drill bit inserts guide pin 4, along guide pin 4 direction, bore into, form the nail hole to be convenient for later stage titanium nail screw in.
According to the technical scheme, the problem of shortage of special positioning tools when the far-end perforated prosthesis is used at present is solved, the structural design is reasonable, the use is reliable, the fixed titanium nails can be accurately screwed into the openings of the prosthesis, and powerful instrument assistance is provided for hip joint replacement.
Example 2:
this example was optimized based on example 1 above.
In order to facilitate the operation of the shape of the first connector 1, the first extension 1.1 extends obliquely upwards and backwards downwards to the upper end of the second extension 1.2.
Example 3:
this example was optimized based on example 1 above.
In order to facilitate the handheld positioning of the first connector 1, the top of the first connector 1 is provided with a handheld grip 8.
Example 4:
this example was optimized based on example 3 above.
To improve the reliability of the hand grip, the handle 8 includes a plurality of rounded convex structures.
Example 5:
this example was optimized based on example 2 above.
In order to improve the structural stability of the first connector 1, the first connector 1 is of an integral structure.
Example 6:
this example was optimized based on example 1 above.
As shown in fig. 2, a first positioning hole 9, a threaded hole 10 and a second positioning hole 11 are sequentially formed in the second extension portion 1.2 along the length direction of the second extension portion, two positioning rods 12 respectively abutted to the first positioning hole 9 and the second positioning hole 11 are arranged on the second connecting piece 2, a connecting hole corresponding to the threaded hole 10 is further formed in the second connecting piece 2, a bolt 18 is arranged between the second extension portion 1.2 and the second connecting piece 2, and the bolt 18 is in threaded fit with the threaded hole 10 after penetrating through the connecting hole.
The first positioning hole 9 and the second positioning hole 11 are respectively in butt joint with the two positioning rods 12 on the second connecting piece 2, the aim of auxiliary positioning can be fulfilled in the process of mounting the first connecting piece 1 and the second connecting piece 2, the fixed connection of the first connecting piece 1 and the second connecting piece 2 can be realized through screwing the bolts 18, and the structure provides a convenient operation structure for the detachable fixed mounting of the first connecting piece 1 and the second connecting piece 2.
Example 7:
this example was optimized based on example 1 above.
As shown in fig. 3, in order to achieve a better positioning anti-rotation effect, the limiting structure comprises a positioning protrusion matched with the shape of the groove at the upper end of the femoral stem prosthesis 5, and the positioning protrusion comprises a first positioning protrusion 14 and a second positioning protrusion 15 which are oppositely arranged.
Example 8:
this example was optimized based on example 7 above.
In order to facilitate the formation of the first positioning protrusion 14 and the second positioning protrusion 15 and facilitate the positioning anti-rotation effect of the first positioning protrusion 14 and the second positioning protrusion 15 and the upper end of the femoral stem prosthesis 5, the end portion of the first extension portion 1.1 extends downwards to form an extension column 16, and the first positioning protrusion 14 and the second positioning protrusion 15 are integrally formed at the lower end of the extension column 16.
Example 9:
this example was optimized based on example 1 above.
In order to adjust the extension length of the guide pin 4 according to different use demands, one end of the sleeve 3 is provided with an adjustable positioning part 17, one end of the adjustable positioning part 17 is in threaded connection with one end of the sleeve 3, and the other end of the adjustable positioning part 17 is in abutting connection with a limiting part of the guide pin 4.
Example 10:
this example was optimized based on example 1 above.
In order to match the sleeve 3 and the lead 4 with the distal femoral stem nail holes 6, the number of the sleeve 3 and the lead 4 corresponds to the number of the distal femoral stem nail holes 6.
Finally, it should be noted that: the above is only a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. A femur stem distal nail hole positioning device, which is characterized in that: the femoral stem prosthesis comprises a first connecting piece, a second connecting piece, a sleeve and a guide pin, wherein the first connecting piece comprises a first extending part and a second extending part, the second extending part vertically extends downwards, the first extending part is positioned on one side of the second extending part, the end part of the first extending part is provided with a limiting structure which is matched with the upper end of the femoral stem prosthesis, the second extending part is detachably and fixedly connected with the second connecting piece, and the lower end of the second connecting piece is provided with a guide hole corresponding to a distal nail hole of the femoral stem; the sleeve passes through the guide hole and extends to a position aligned with the distal nail hole of the femoral stem, the guide pin extends along the sleeve and passes through the distal nail hole of the femoral stem for positioning the center of the distal nail hole of the femoral stem, and a drilling guide space convenient for a long hollow drill bit to drill is formed between the guide pin and the sleeve.
2. A femoral stem distal nail hole positioning device in accordance with claim 1, wherein: the first extension portion extends obliquely upward and backward and downward to an upper end of the second extension portion.
3. A femoral stem distal nail hole positioning device in accordance with claim 1, wherein: the top of the first connecting piece is provided with a handheld handle.
4. A femoral stem distal nail hole positioning device in accordance with claim 3, wherein: the hand-held handle comprises a plurality of smooth bulge structures.
5. A femoral stem distal nail hole positioning device in accordance with claim 2, wherein: the first connecting piece is of an integrated structure.
6. A femoral stem distal nail hole positioning device in accordance with claim 1, wherein: the second extension part is sequentially provided with a first positioning hole, a threaded hole and a second positioning hole along the length direction of the second extension part, the second connecting part is provided with two positioning rods which are respectively in butt joint with the first positioning hole and the second positioning hole, the second connecting part is also provided with a connecting hole corresponding to the threaded hole, a bolt is arranged between the second extension part and the second connecting part, and the bolt is in threaded fit with the threaded hole after passing through the connecting hole.
7. A femoral stem distal nail hole positioning device in accordance with claim 1, wherein: the limiting structure comprises a positioning protrusion matched with the upper end groove of the femoral stem prosthesis in shape, and the positioning protrusion comprises a first positioning protrusion and a second positioning protrusion which are oppositely arranged.
8. The femoral stem distal nail hole positioning device of claim 7, wherein: the end part of the first extension part is downwards extended to form an extension column, and the first positioning bulge and the second positioning bulge are integrally formed at the lower end of the extension column.
9. A femoral stem distal nail hole positioning device in accordance with claim 1, wherein: one end of the sleeve is provided with an adjustable positioning part, one end of the adjustable positioning part is in threaded connection with one end of the sleeve, and the other end of the adjustable positioning part is in butt joint with the limiting part of the guide pin.
10. A femoral stem distal nail hole positioning device in accordance with claim 1, wherein: the number of the sleeves and the guide pins is consistent with that of the distal nail holes of the femoral stem.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320935807.9U CN219896037U (en) | 2023-04-23 | 2023-04-23 | Femur handle distal nail hole positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320935807.9U CN219896037U (en) | 2023-04-23 | 2023-04-23 | Femur handle distal nail hole positioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219896037U true CN219896037U (en) | 2023-10-27 |
Family
ID=88430647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320935807.9U Active CN219896037U (en) | 2023-04-23 | 2023-04-23 | Femur handle distal nail hole positioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219896037U (en) |
-
2023
- 2023-04-23 CN CN202320935807.9U patent/CN219896037U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205268269U (en) | Shin calf screw is followed closely absolutely and is taken out locator down | |
| CN219896037U (en) | Femur handle distal nail hole positioning device | |
| CN104814786B (en) | Multi-beam reconstruction component for knee-joint ACL (anterior cruciate ligament) for department of orthopaedics | |
| CN207561975U (en) | Intramedullary nail precise positioning mounting bracket | |
| CN206355098U (en) | A kind of Novel orthopedic drill | |
| CN104665920B (en) | A kind of passage preparation tool of pelvis crista iliaca external fixing rack screw | |
| CN215018429U (en) | Novel femoral head extractor | |
| CN208591116U (en) | A kind of intramedullary nail and its distal locking nail sighting system | |
| CN106073857A (en) | A kind of multi-functional replacement and fixation guide forceps | |
| CN205758620U (en) | A kind of medical apparatus and instruments rebuild for plantar ligaments | |
| CN206324822U (en) | Ligament tibia end keel shaped device in a kind of total knee arthroplasty | |
| CN201185959Y (en) | Malleolus medialis puncture needle locating guider | |
| CN202263046U (en) | Tibial interlocking intramedullary nail | |
| CN213941067U (en) | Knee joint prosthesis shin bone side positioner | |
| CN113413221A (en) | Drilling device of oral implantation positioner and manufacturing method | |
| CN113813037A (en) | Implanting device for femoral intertrochanteric fracture conformal nail | |
| CN201055416Y (en) | Exterior fixing drift bolt structure for thighbone intertrochanteric fracture | |
| CN102805657A (en) | Medullary cavity file for combined hip joint replacement operation | |
| CN106264657B (en) | Orthopaedics replacement knee equilibrium gap osteotomy positioning system | |
| JP7052084B2 (en) | Surgical equipment for medical screw insertion surgery, and surgical robots equipped with this | |
| CN209332199U (en) | A kind of laparoscopic surgery removing guiding device | |
| CN116211393B (en) | Shoulder joint humerus marrow cavity distal end reaming instrument | |
| CN216854822U (en) | Fish-mouth-shaped metal interlocking intramedullary nail | |
| CN201131801Y (en) | Femoral bone central line locater | |
| CN212490277U (en) | Tibia single condyle prosthesis holder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |