CN219921190U - Intramedullary nail system with telescopic claw - Google Patents
Intramedullary nail system with telescopic claw Download PDFInfo
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- CN219921190U CN219921190U CN202320938606.4U CN202320938606U CN219921190U CN 219921190 U CN219921190 U CN 219921190U CN 202320938606 U CN202320938606 U CN 202320938606U CN 219921190 U CN219921190 U CN 219921190U
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- nail
- shaped opening
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- 210000000078 claw Anatomy 0.000 title claims abstract description 124
- 238000011084 recovery Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 5
- 238000002513 implantation Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 239000007943 implant Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 206010002091 Anaesthesia Diseases 0.000 description 3
- 230000037005 anaesthesia Effects 0.000 description 3
- 230000002980 postoperative effect Effects 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- UZUFPBIDKMEQEQ-UHFFFAOYSA-N perfluorononanoic acid Chemical compound OC(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F UZUFPBIDKMEQEQ-UHFFFAOYSA-N 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
Abstract
The utility model relates to the technical field of medical appliances and discloses an intramedullary nail system with a telescopic claw, which comprises a main nail, a first arc-shaped opening claw and a first operating rod, wherein a first operating cavity is arranged in the main nail, the first operating rod is positioned in the first operating cavity and is in running fit with the main nail, the first arc-shaped opening claw bends towards the outer side of the main nail, a first arc-shaped fixed rail is arranged at the lower part of the first operating cavity, the first arc-shaped opening claw is in sliding fit with the first arc-shaped fixed rail, a first thread part is arranged at the part of the first arc-shaped opening claw positioned in the first operating cavity, a second thread part is arranged on the first operating rod, and the first thread part is in threaded fit with the second thread part; the utility model provides an intramedullary nail system with a telescopic claw, which solves the problems of long operation time, more operation incisions of patients and longer recovery time caused by the existing intramedullary nail structure.
Description
Technical Field
The utility model relates to the technical field of medical appliances, in particular to an intramedullary nail system with a telescopic claw.
Background
For the intertrochanter fracture of femur, which is commonly used in the current market and mainly uses femoral intramedullary nails such as PFNA, the system mainly comprises three parts, namely a main nail, a proximal locking nail and a distal locking nail, wherein the three parts are usually required to be singly made into incisions for implantation in cooperation with a positioning instrument, and meanwhile, the distal locking nail is usually required to be crossly implanted for ensuring the anti-rotation effect of a nail body, which means that more than two or even more distal incisions are required, so that the intramedullary nail with the structure in the current market has a plurality of defects, the operation time is long, the operation incisions of patients are more, the recovery time is longer, and the like.
Aiming at the problems of long operation time, more operation incisions of patients, longer recovery time, influence on the operation effect and the like caused by the existing intramedullary nail structure in the market at present, a new intramedullary nail structure needs to be designed and developed. Solves the problems of long operation time, more operation incisions of patients and longer recovery time caused by the prior intramedullary nail structure.
Disclosure of Invention
It is an object of the present utility model to provide an intramedullary nail system with retractable claws to solve at least one of the above mentioned problems of the prior art.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides an intramedullary nail system with scalable claw formula, includes main nail, first arc struts claw and first action bars, the inside of main nail is first operation chamber, first action bars is located first operation intracavity and rotates the cooperation with main nail, first arc struts the claw and bends towards the outside of main nail, the distal end screw thread of main nail corresponds with the lower part of first operation chamber, the lower part of first operation chamber is equipped with first arc fixed rail, first arc struts claw and first arc fixed rail sliding fit, the part that first arc struts the claw and is located first operation intracavity is equipped with first screw thread portion, be equipped with second screw thread portion on the first action bars, first screw thread portion and second screw thread portion screw fit, be equipped with the first guiding hole that the first arc struts the claw and stretch out of being convenient for on the main nail, first arc struts claw and first guiding hole sliding fit.
In this technical scheme, because first action bars is located first operation intracavity and rotates the cooperation with the owner nail, and be equipped with on the first action bars with first screw thread portion screw-thread fit's second screw thread portion, first arc struts the claw and crooked towards the outside of owner nail, the lower part of first action bars is equipped with first arc fixed track, first arc struts claw and first arc fixed track sliding fit, then through rotating first action bars, first arc struts the claw and can stretch out and draw back under the fixed orbital guide of first arc, owing to be equipped with the first guiding hole that is convenient for first arc struts the claw and stretch out on the owner nail, first action bars continue to rotate, transmission power is to on the first arc struts the claw, then first arc struts the claw and stretches out in the first guiding hole, first arc struts the claw and implants in the human body, thereby reach auxiliary fixation's purpose.
According to the technical scheme, the first arc-shaped opening claw can be fully telescopic to match the fixing requirement in the operation; the distal cortex locking screw is not needed, the first arc-shaped expanding claw and the main screw are combined into an integrated structural design, and the first arc-shaped expanding claw can be unfolded from the main screw according to the requirement, so that the 'freehand' technology of the locking screw implantation becomes the past. Furthermore, the use of the present solution allows minimally invasive surgical techniques to safely elevate patients to a new level without the need for distal locking nails, thereby reducing intraoperative incisions. In addition, the steps of distal stapling are reduced, thereby also reducing the procedure time. The time of the patient under anesthesia is reduced, the radiation exposure of the patient, doctors and operating room staff can be reduced, and a more optimized postoperative recovery effect is created for the patient.
In conclusion, the technical scheme provides the intramedullary nail with the brand new structure, which has reasonable structural design, is simple and convenient to use, reduces the operation time and reduces the incision number in the operation of patients.
Further, for the convenience to realize the concrete setting to first arc fixed track, first arc fixed track includes first track and the second track that sets up along first operation chamber length direction interval, first arc struts claw and first track and second track sliding fit respectively.
Further, in order to facilitate specific fixing and forming of the first rail and the second rail, the first rail and the second rail are respectively fixed in the first operation cavity through connecting arms.
Further, in order to achieve a better auxiliary positioning effect, two first arc-shaped opening claws and two first arc-shaped fixing rails are symmetrically arranged in the first operation cavity. That is, the two first arc-shaped opening claws are opened to present an extending state in an eight shape.
Further, for better realization to the setting of centering of first action bars to promote the driven stability between first action bars and the first arc and strut the claw, be equipped with first uide bushing in the middle of the first operation intracavity, first action bars and first uide bushing normal running fit.
Further, in order to achieve better auxiliary fixing effect at the proximal end of the intramedullary nail, the intramedullary nail further comprises a proximal end locking nail, a second arc-shaped opening claw and a second operating rod, wherein a second operating cavity is arranged in the proximal end locking nail, the second operating rod is positioned in the second operating cavity and is in rotating fit with the proximal end locking nail, the second arc-shaped opening claw bends towards the outer side of the proximal end locking nail, a second arc-shaped fixing track is arranged in the second operating cavity, the second arc-shaped opening claw is in sliding fit with the second arc-shaped fixing track, a third threaded part is arranged on the part of the second arc-shaped opening claw positioned in the second operating cavity, and a fourth threaded part is arranged on the second operating rod and is in threaded fit with the fourth threaded part; the proximal lock nail is provided with a second guide hole which is convenient for the second arc-shaped opening claw to extend out, and the second arc-shaped opening claw is in sliding fit with the second guide hole.
Specifically, because the second action bars is located the second operation intracavity and rotates the cooperation with the proximal end lock nail, and be equipped with on the second action bars with third screw thread portion complex fourth screw thread portion, the second arc struts the claw and crooked towards the outside of proximal end lock nail, the lower part in second operation chamber is equipped with second arc fixed track, second arc struts claw and second arc fixed track sliding fit, then through rotating the second action bars, the second arc struts the claw and can stretch out and draw back the removal under the fixed track's of second arc guide, owing to be equipped with the second guiding hole that the second arc struts the claw and stretch out on the proximal end lock nail, the second action bars lasts to rotate, transmit power to the second arc struts the claw and stretches out in the second guiding hole, the second arc struts the claw and implants in the human body, thereby reach the purpose of supplementary fixed.
According to the technical scheme, the second arc-shaped opening claw can be fully telescopic to match the fixing requirement in the operation; the second arc-shaped opening claw and the proximal locking nail are combined into an integrated structural design, and the second arc-shaped opening claw can be unfolded from the proximal locking nail according to the requirement, so that the 'freehand' technology for implanting the locking screw becomes the past.
Further, for the convenience to realize the concrete setting to the fixed track of second arc, the fixed track of second arc includes third track and the fourth track that sets up along second operation chamber length direction interval, the second arc struts claw and third track and fourth track sliding fit respectively.
Further, in order to facilitate specific fixing and forming of the third rail and the fourth rail, the third rail and the fourth rail are respectively fixed in the second operation cavity through connecting arms.
Further, in order to achieve a better auxiliary positioning effect, two second arc-shaped opening claws and two second arc-shaped fixing rails are symmetrically arranged in the second operation cavity. That is, the two second arc-shaped opening claws are opened to present an extending state of an eight shape.
Further, for better realization to the setting of centering of second action bars to promote the driven stability between second action bars and the second arc struts the claw, be equipped with the second uide bushing in the second operation intracavity at the center, second action bars and second uide bushing normal running fit.
The beneficial effects of the utility model are as follows: in this technical scheme, because first action bars is located first operation intracavity and rotates the cooperation with the owner nail, and be equipped with on the first action bars with first screw thread portion screw-thread fit's second screw thread portion, first arc struts the claw and crooked towards the outside of owner nail, the lower part of first action bars is equipped with first arc fixed track, first arc struts claw and first arc fixed track sliding fit, then through rotating first action bars, first arc struts the claw and can stretch out and draw back under the fixed orbital guide of first arc, owing to be equipped with the first guiding hole that is convenient for first arc struts the claw and stretch out on the owner nail, first action bars continue to rotate, transmission power is to on the first arc struts the claw, then first arc struts the claw and stretches out in the first guiding hole, first arc struts the claw and implants in the human body, thereby reach auxiliary fixation's purpose.
According to the technical scheme, the first arc-shaped opening claw can be fully telescopic to match the fixing requirement in the operation; the distal cortex locking screw is not needed, the first arc-shaped expanding claw and the main screw are combined into an integrated structural design, and the first arc-shaped expanding claw can be unfolded from the main screw according to the requirement, so that the 'freehand' technology of the locking screw implantation becomes the past. Furthermore, the use of the present solution allows minimally invasive surgical techniques to safely elevate patients to a new level without the need for distal locking nails, thereby reducing intraoperative incisions. In addition, the steps of distal stapling are reduced, thereby also reducing the procedure time. The time of the patient under anesthesia is reduced, the radiation exposure of the patient, doctors and operating room staff can be reduced, and a more optimized postoperative recovery effect is created for the patient.
In conclusion, the technical scheme provides the intramedullary nail with the brand new structure, which has reasonable structural design, is simple and convenient to use, reduces the operation time and reduces the incision number in the operation of patients.
Drawings
FIG. 1 is a schematic view of a first state of the present utility model;
FIG. 2 is an enlarged schematic view of a portion of FIG. 1 at A;
FIG. 3 is an enlarged partial schematic view of FIG. 1 at B;
FIG. 4 is a partial cross-sectional view of the present utility model;
FIG. 5 is a schematic diagram of a partial process at C in FIG. 4;
FIG. 6 is a schematic view of the auxiliary fixing state of the present utility model;
FIG. 7 is a schematic structural view of a first lever and a first arc-shaped expansion claw according to the present utility model;
FIG. 8 is a perspective view of a proximal locking pin of the present utility model;
FIG. 9 is a cross-sectional view of the distal end of the main staple of the present utility model;
fig. 10 is a cross-sectional view of the proximal locking pin of the present utility model.
In the figure: a main nail 1; a first arc-shaped opening claw 2; a first lever 3; a first operation chamber 4; a first track 5.1; a second track 5.2; a first threaded portion 6; a second screw portion 7; a first guide hole 8; a connecting arm 9; a first guide sleeve 10; a proximal locking pin 11; a second arcuate distraction claw 12; a second operation chamber 14; a third track 15.1; a fourth track 15.2; a third threaded portion 16; a second guide hole 18; a second guide sleeve 19; positioning seat 20.
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. 1-10, this embodiment provides an intramedullary nail system with telescopic claw, including a main nail 1, a first arc-shaped expanding claw 2 and a first operating rod 3, the inside of the main nail 1 is a first operating cavity 4, the first operating rod 3 is located in the first operating cavity 4 and is in running fit with the main nail 1, the first arc-shaped expanding claw 2 bends towards the outside of the main nail 1, the distal end thread of the main nail 1 corresponds to the lower part of the first operating cavity 4, the lower part of the first operating cavity 4 is provided with a first arc-shaped fixed rail, the first arc-shaped expanding claw 2 is in sliding fit with the first arc-shaped fixed rail, the part of the first arc-shaped expanding claw 2 located in the first operating cavity 4 is provided with a first threaded part 6, the first operating rod 3 is provided with a second threaded part 7, the first threaded part 6 is in threaded fit with the second threaded part 7, the main nail 1 is provided with a first guide hole 8 which is convenient for the first arc-shaped expanding claw 2 to extend, and the first arc-shaped claw 2 is in sliding fit with the first guide hole 8.
In this technical scheme, because first action bars 3 are located first operation chamber 4 and with main nail 1 normal running fit, and be equipped with on the first action bars 3 with first screw thread portion 6 screw thread fit's second screw thread portion 7, first arc struts claw 2 is crooked towards the outside of main nail 1, the lower part of first action chamber 4 is equipped with first arc fixed track, first arc struts claw 2 and first arc fixed track sliding fit, then through rotating first action bars 3, first arc struts claw 2 can stretch out and draw back under first arc fixed track's guide, owing to be equipped with the first guiding hole 8 that the first arc struts claw 2 of being convenient for stretches out on the main nail 1, first action bars 3 continue to rotate, transmit power to on the first arc struts claw 2, then first arc struts claw 2 can stretch out from first guiding hole 8, first arc struts claw 2 implants to the human body in, thereby reach supplementary fixed purpose.
According to the technical scheme, the first arc-shaped opening claw 2 can be fully telescopic to match the fixing requirement in the operation; the first arc-shaped expanding claw 2 and the main nail 1 are combined into an integrated structural design without a distal cortex locking screw, and the first arc-shaped expanding claw 2 can be unfolded from the main nail 1 according to the requirement, so that the 'freehand' technology of the locking screw implantation becomes the past. Furthermore, the use of the present solution allows minimally invasive surgical techniques to safely elevate patients to a new level without the need for distal locking nails, thereby reducing intraoperative incisions. In addition, the steps of distal stapling are reduced, thereby also reducing the procedure time. The time of the patient under anesthesia is reduced, the radiation exposure of the patient, doctors and operating room staff can be reduced, and a more optimized postoperative recovery effect is created for the patient.
In conclusion, the technical scheme provides the intramedullary nail with the brand new structure, which has reasonable structural design, is simple and convenient to use, reduces the operation time and reduces the incision number in the operation of patients.
Example 2:
this example was optimized based on example 1 above.
As shown in fig. 5 and 9, in order to facilitate the implementation of the specific arrangement of the first arc-shaped fixed rail, the first arc-shaped fixed rail includes a first rail 5.1 and a second rail 5.2 that are arranged at intervals along the length direction of the first operation cavity 4, and the first arc-shaped opening claw 2 is respectively in sliding fit with the first rail 5.1 and the second rail 5.2.
Example 3:
this example was optimized based on example 1 above.
As shown in fig. 5 and 9, in order to facilitate the specific fixing and forming of the first rail 5.1 and the second rail 5.2, the first rail 5.1 and the second rail 5.2 are fixed in the first operation chamber 4 by the connecting arm 9, respectively. In order to achieve a better guiding effect, the first rail 5.1 and the second rail 5.2 are of sleeve structures.
Example 4:
this example was optimized based on example 1 above.
As shown in fig. 5 and 7, in order to achieve a better auxiliary positioning effect, two first arc-shaped opening claws 2 and two first arc-shaped fixing rails are symmetrically arranged in the first operation cavity 4. That is, the two first arc-shaped expanding claws 2 are expanded to be in an extending state of an eight shape.
Example 5:
this example was optimized based on example 1 above.
As shown in fig. 9, in order to better realize the centering of the first operating rod 3, thereby improving the stability of the transmission between the first operating rod 3 and the first arc-shaped opening claw 2, a first guide sleeve 10 is arranged in the first operating cavity 4 in the middle, and the first operating rod 3 is in running fit with the first guide sleeve 10. Specifically, a plurality of first guide sleeves 10 may be disposed along the length direction of the first operation chamber 4, and preferably, the first guide sleeves 10 may be disposed above and below the first arc-shaped fixing rail, respectively. Preferably, in order to facilitate the fixed position setting of the first guide sleeve 10 relative to the main nail 1, the first guide sleeve 10 is fixedly set in the first operation cavity 4 by the positioning seat 20.
Example 6:
this example was optimized based on example 1 above.
As shown in fig. 8 and 10, in order to achieve better auxiliary fixing effect at the proximal end of the intramedullary nail, the intramedullary nail further comprises a proximal lock nail 11, a second arc-shaped opening claw 12 and a second operating rod, wherein the second operating cavity 14 is arranged in the proximal lock nail 11, the second operating rod is positioned in the second operating cavity 14 and is in running fit with the proximal lock nail 11, the second arc-shaped opening claw 12 bends towards the outer side of the proximal lock nail 11, a second arc-shaped fixing rail is arranged in the second operating cavity 14, the second arc-shaped opening claw 12 is in sliding fit with the second arc-shaped fixing rail, a third threaded part 16 is arranged at the part of the second arc-shaped opening claw 12 positioned in the second operating cavity 14, a fourth threaded part is arranged on the second operating rod, and the third threaded part 16 is in threaded fit with the fourth threaded part; the proximal locking nail 11 is provided with a second guide hole 18 which is convenient for the second arc-shaped opening claw 12 to extend, and the second arc-shaped opening claw 12 is in sliding fit with the second guide hole 18.
Specifically, because the second operating rod is located in the second operating cavity 14 and is in running fit with the proximal locking nail 11, and the second operating rod is provided with a fourth threaded portion in threaded fit with the third threaded portion 16, the second arc-shaped expanding claw 12 bends towards the outer side of the proximal locking nail 11, the lower portion of the second operating cavity 14 is provided with a second arc-shaped fixed rail, the second arc-shaped expanding claw 12 is in sliding fit with the second arc-shaped fixed rail, the second arc-shaped expanding claw 12 can stretch out and draw back under the guidance of the second arc-shaped fixed rail through rotating the second operating rod, and because the proximal locking nail 11 is provided with a second guide hole 18 which is convenient for the second arc-shaped expanding claw 12 to stretch out, the second operating rod continuously rotates and transmits power to the second arc-shaped expanding claw 12, the second arc-shaped expanding claw 12 stretches out from the second guide hole 18, and the second arc-shaped expanding claw 12 is implanted into a human body, so that the purpose of auxiliary fixing is achieved.
According to the technical scheme, the second arc-shaped opening claw 12 can be fully telescopic to match the fixing requirement in the operation; the second arc-shaped opening claw 12 and the proximal locking nail 11 are combined into an integrated structural design, and the second arc-shaped opening claw 12 can be unfolded from the interior of the proximal locking nail 11 according to the requirement, so that the 'freehand' technology of locking screw implantation becomes the past.
Example 7:
this example was optimized based on example 6 above.
As shown in fig. 10, in order to facilitate the implementation of the specific arrangement of the second arc-shaped fixed rail, the second arc-shaped fixed rail includes a third rail 15.1 and a fourth rail 15.2 that are arranged at intervals along the length direction of the second operating cavity 14, and the second arc-shaped expanding claw 12 is respectively in sliding fit with the third rail 15.1 and the fourth rail 15.2.
Example 8:
this example was optimized based on example 7 above.
In order to facilitate the specific fixing and shaping of the third rail 15.1 and the fourth rail 15.2, the third rail 15.1 and the fourth rail 15.2 are respectively fixed in the second operating chamber 14 by means of the connecting arm 9. In order to achieve a better guiding effect, the third rail 15.1 and the fourth rail 15.2 are both sleeve structures.
Example 9:
this example was optimized based on example 6 above.
In order to achieve better auxiliary positioning effect, two second arc-shaped opening claws 12 and two second arc-shaped fixing rails are symmetrically arranged in the second operation cavity 14. That is, the two second arc-shaped expanding claws 12 are expanded to be in an extended state of an eight shape.
Example 10:
this example was optimized based on example 6 above.
In order to better realize the centering of the second operating rod, thereby improving the stability of the transmission between the second operating rod and the second arc-shaped opening claw 12, a second guide sleeve 19 is arranged in the second operating cavity 14 in the middle, and the second operating rod is in running fit with the second guide sleeve 19. Specifically, a plurality of second guide sleeves 19 may be disposed along the length direction of the second operation chamber 14, and preferably, the second guide sleeves 19 may be disposed above and below the second arc-shaped fixing rail, respectively. Preferably, in order to facilitate the fixed positioning of the second guide sleeve 19 relative to the proximal locking pin 11, the second guide sleeve 19 is fixedly disposed within the second operating chamber 14 by a positioning seat 20.
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. An intramedullary nail system with retractable jaws, characterized by: including main nail, first arc struts claw and first action bars, the inside of main nail is first operation chamber, first action bars is located first operation intracavity and rotates the cooperation with the main nail, first arc struts the claw and bends towards the outside of main nail, the distal end screw thread of main nail corresponds with the lower part of first operation chamber, the lower part of first operation chamber is equipped with first arc fixed track, first arc struts claw and first arc fixed track sliding fit, the part that first arc struts the claw and is located first operation intracavity is equipped with first screw thread portion, be equipped with second screw thread portion on the first action bars, first screw thread portion and second screw thread portion screw thread fit are equipped with the first guiding hole that the claw stretches out of being convenient for on the main nail, first arc struts claw and first guiding hole sliding fit.
2. An intramedullary nail system with retractable jaws according to claim 1, wherein: the first arc-shaped fixed rail comprises a first rail and a second rail which are arranged at intervals along the length direction of the first operation cavity, and the first arc-shaped opening claw is in sliding fit with the first rail and the second rail respectively.
3. An intramedullary nail system with retractable jaws according to claim 2, wherein: the first track and the second track are respectively fixed in the first operation cavity through connecting arms.
4. An intramedullary nail system with retractable jaws according to claim 1, wherein: two first arc-shaped opening claws and two first arc-shaped fixing rails are symmetrically arranged in the first operation cavity.
5. An intramedullary nail system with retractable jaws according to claim 1, wherein: the first operation cavity is internally provided with a first guide sleeve in the middle, and the first operation rod is in running fit with the first guide sleeve.
6. An intramedullary nail system with retractable jaws according to claim 1, wherein: the novel surgical device comprises a proximal lock nail, a second arc-shaped opening claw and a second operating rod, wherein a second operating cavity is arranged in the proximal lock nail, the second operating rod is positioned in the second operating cavity and is in running fit with the proximal lock nail, the second arc-shaped opening claw bends towards the outer side of the proximal lock nail, a second arc-shaped fixed rail is arranged in the second operating cavity, the second arc-shaped opening claw is in sliding fit with the second arc-shaped fixed rail, a third threaded part is arranged at the part of the second arc-shaped opening claw positioned in the second operating cavity, a fourth threaded part is arranged on the second operating rod, and the third threaded part is in threaded fit with the fourth threaded part; the proximal lock nail is provided with a second guide hole which is convenient for the second arc-shaped opening claw to extend out, and the second arc-shaped opening claw is in sliding fit with the second guide hole.
7. An intramedullary nail system with retractable claws according to claim 6, wherein: the second arc-shaped fixed rail comprises a third rail and a fourth rail which are arranged at intervals along the length direction of the second operation cavity, and the second arc-shaped opening claw is respectively in sliding fit with the third rail and the fourth rail.
8. An intramedullary nail system with retractable claws according to claim 7, wherein: the third track and the fourth track are respectively fixed in the second operation cavity through connecting arms.
9. An intramedullary nail system with retractable claws according to claim 6, wherein: two second arc-shaped opening claws and two second arc-shaped fixing rails are symmetrically arranged in the second operation cavity.
10. An intramedullary nail system with retractable claws according to claim 6, wherein: and a second guide sleeve is arranged in the second operation cavity in the middle, and the second operation rod is in running fit with the second guide sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320938606.4U CN219921190U (en) | 2023-04-23 | 2023-04-23 | Intramedullary nail system with telescopic claw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320938606.4U CN219921190U (en) | 2023-04-23 | 2023-04-23 | Intramedullary nail system with telescopic claw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219921190U true CN219921190U (en) | 2023-10-31 |
Family
ID=88504443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320938606.4U Active CN219921190U (en) | 2023-04-23 | 2023-04-23 | Intramedullary nail system with telescopic claw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219921190U (en) |
-
2023
- 2023-04-23 CN CN202320938606.4U patent/CN219921190U/en active Active
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