CN111728685A - Proximal insertion point positioning and navigation device for femoral intramedullary nail - Google Patents
Proximal insertion point positioning and navigation device for femoral intramedullary nail Download PDFInfo
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- CN111728685A CN111728685A CN202010747433.9A CN202010747433A CN111728685A CN 111728685 A CN111728685 A CN 111728685A CN 202010747433 A CN202010747433 A CN 202010747433A CN 111728685 A CN111728685 A CN 111728685A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/72—Intramedullary pins, nails or other devices
- A61B17/7233—Intramedullary pins, nails or other devices with special means of locking the nail to the bone
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Abstract
A proximal needle feeding point positioning and navigating device for a femoral intramedullary nail comprises a buckle and a vertical rod, wherein a first needle rod clamp and a rod clamp are arranged on the vertical rod in a sliding mode, a transverse rod perpendicular to the vertical rod is arranged on the rod clamp in a sliding mode, the transverse rod is further connected with a second needle rod clamp in a sliding mode, a right guide needle perpendicular to the transverse rod is arranged on the second needle rod clamp in a sliding mode, the first needle rod clamp is further connected with one end of a side guide needle in a sliding mode, the side guide needle and the right guide needle are arranged in parallel, the other end of the side guide needle is connected with one end of an adjuster, a transverse guide needle perpendicular to the side guide needle is arranged on the adjuster in a sliding mode, the other end of the adjuster is connected with a positioning rod, a hollow positioning guider is arranged in a sliding hole of the positioning rod in a penetrating mode, the front end of the hollow positioning guider bends and extends towards the tip end; by the technical scheme, the invention can shorten the operation time, reduce the number of times of fluoroscopy, the amount of bleeding during the operation and the length of the incision.
Description
Technical Field
The invention relates to the field of orthopedic medical instruments, in particular to a proximal insertion point positioning and navigating device for a femoral intramedullary nail.
Background
The intramedullary nail technology has been used in clinic for about half a century, has been widely adopted by orthopedics doctors at home and abroad due to the advantages of minimal invasion, less damage to periosteum blood supply, reliable fixation and the like, and particularly has completely surpassed the traditional incision reduction steel plate and screw fixation technology for the treatment of intertrochanteric fracture and femoral fracture. Because the intramedullary nail technology needs to complete the whole operation through X-ray perspective guidance under the condition of not exposing (or exposing limited) a fracture end, the operation of placing the intramedullary nail guide pin is often the most critical in the whole operation process of the femoral antegrade intramedullary nail, the required perspective amount is very large, the whole follow-up operation is influenced once deviation occurs, and the radiation injury accumulated for a long time is not small.
Pear-shaped socket nail and greater trochanter vertex nail are two of the most common methods for intramedullary nailing at the proximal end of femur in clinic. The position of the greater trochanter nail inserting point is more outward, the bony mark is obvious, the operation is convenient, the fracture of the proximal end of the femur during the nail inserting is avoided, and the nail inserting of the greater trochanter vertex can reduce the operation time and the bleeding amount in the operation. After the junction of the anterior-medial femoral greater trochanter tip 1/3 is selected as a nail insertion point, the smooth placement of the intramedullary nail guide pin into an ideal position is difficult to achieve. At present, the clinician mostly adopts the steps of incising the skin and subcutaneous tissues, separating the gluteus medius, touching the greater trochanter tip with fingers, and then introducing the guide pin, but the operation has increased bleeding, and the infection risk is increased because the guide pin punctures a sterile glove.
In clinical work, the selection of the proximal nail feeding point of the femoral intramedullary nail is found to be the key of intramedullary nail fixation, and if the selection of the nail feeding point is not proper, reduction loss and fixation failure are easily caused. In clinical practice, a body surface marking line is selected to assist in selecting a nail feeding point and a nail feeding route, the central axis of the femur is marked through the body surface, and the intramedullary nail guide pin is implanted in a minimally invasive mode by referring to the external marking line, so that the operation time is shortened, and the operation wound and bleeding are reduced.
Disclosure of Invention
In view of the above technical problems, an object of the present invention is to provide a positioning and navigating device for proximal insertion point of femoral intramedullary nail, which can shorten the operation time and reduce the number of fluoroscopy times, bleeding amount during operation and incision length.
The purpose of the invention is realized by adopting the following technical scheme. According to the proximal needle insertion point positioning and navigating device for the femoral intramedullary nail, provided by the invention, the proximal needle insertion point positioning and navigating device comprises a buckle fixed on an operating bed and a vertical rod which is arranged on the buckle and is arranged in a sliding manner along the vertical direction, the vertical rod is sequentially provided with a first needle rod clamp and a rod clamp in a sliding manner from bottom to top, a transverse rod which is perpendicular to the vertical rod is arranged on the rod clamp in a sliding manner, the transverse rod is also connected with a second needle rod clamp in a sliding manner, a lateral guide pin which is perpendicular to the transverse rod is arranged on the second needle rod clamp in a sliding manner, the first needle rod clamp is also connected with one end of the lateral guide pin in a sliding manner, the lateral guide pin and the lateral guide pin are arranged in parallel, the other end of the lateral guide pin is connected with one end of an adjuster, a transverse guide pin which is on the same horizontal plane as and perpendicular to the lateral guide pin is arranged on the adjuster in a sliding manner, the other end of the adjuster is, the hollow positioning guider front end is equipped with the guide pin passageway towards the most advanced bending extension of horizontal guide pin in this hollow positioning guider, and the entry of guide pin passageway is seted up in the hollow positioning guider one side that deviates from horizontal guide pin, and the direction that hollow positioning guider front end and export were located in the export is mutually perpendicular with horizontal guide pin length direction.
The invention is further realized by adopting the following technical scheme.
The proximal needle insertion point positioning and navigating device for the femoral intramedullary nail comprises a buckle, a C-shaped clamp and a vertical rod clamping block, wherein the buckle comprises the C-shaped clamp and the vertical rod clamping block which are integrally formed, the C-shaped clamp is connected with a locking screw rod in a threaded manner at the bottom of the C-shaped clamp, the vertical rod clamping block is provided with a mounting hole for penetrating a vertical rod and a threaded hole communicated with the mounting hole, and the threaded hole is internally provided with a locking bolt for compressing and positioning the vertical rod.
The proximal insertion point positioning and navigating device for the femoral intramedullary nail comprises a rod clamp, a rod clamp and a guide rail, wherein the rod clamp comprises a first clamping part, a second clamping part and a central shaft which is arranged in the first clamping part and the second clamping part in a penetrating mode, the first clamping part comprises a first clamping block and a second clamping block which are buckled with each other, the second clamping part comprises a third clamping block and a fourth clamping block which are buckled with each other, a limiting boss matched with the stop of the fourth clamping block and an external thread matched with the internal thread of the fourth clamping block are arranged at the bottom end of the central shaft, a spring sleeved on the central shaft is arranged between the second clamping block and the third clamping block, anti-skidding teeth which are matched with each other are arranged on the contact surface of the second clamping block and the third clamping block, a knob matched with the first clamping block in the axial direction is fixedly arranged at the top end of the central shaft, a first arc surface groove corresponding to the first clamping block is arranged at the junction of the first clamping block and the second clamping block to form a first clamping hole for clamping cross rod, and a second arc surface groove corresponding to form a vertical clamping hole for clamping rod The first clamping part and the second clamping part can relatively rotate around a central shaft so as to adjust the angle of the first clamping hole and the second clamping hole; the first needle bar clamp and the second needle bar clamp have the same structure as the rod clamp.
In the proximal insertion point positioning and navigating device for the femoral intramedullary nail, the knob is detachably connected to the top end of the central shaft.
The proximal insertion point positioning and navigation device for the femoral intramedullary nail comprises a regulator and a positioning rod, wherein the regulator is provided with a first blind hole used for inserting a side guide pin and a first locking hole communicated with the first blind hole, the other end of the regulator is provided with a second blind hole used for inserting a positioning rod and a second locking hole communicated with the second blind hole, and the middle of the regulator is provided with a through hole used for penetrating a transverse guide pin and a third locking hole communicated with the through hole.
In the proximal insertion point positioning and navigating device for the femoral intramedullary nail, the front end of the hollow positioning guide is in a quadrangular frustum pyramid shape.
In the proximal insertion point positioning and navigating device for the femoral intramedullary nail, the sliding part of the hollow positioning guide in the sliding hole and the front end main body form a stepped shaft.
In the above-mentioned proximal insertion point positioning and navigating device for a femoral intramedullary nail, the sliding portion is cylindrical or rectangular.
Compared with the prior art, the invention visually marks the femoral medullary cavity through the positive position and the lateral position, displays the virtual line and the point in front of the operator through a specific device, further accurately positions the needle feeding point through the transverse guide pin which is positioned at the same horizontal plane with the lateral guide pin and is mutually vertical, and then guides the intramedullary nail guide pin by using the hollow positioning guider, thereby increasing the accuracy of the operation target, being simple, convenient and quick to operate, shortening the operation time, and reducing the number of times of fluoroscopy, the amount of bleeding in the operation and the incision length.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a perspective view of an embodiment of a proximal insertion point positioning and navigating device for a femoral intramedullary nail according to the present invention;
FIG. 2 is a perspective view of the rod clamp of FIG. 1;
FIG. 3 is a cross-sectional view of the rod clamp of FIG. 1;
FIG. 4 is a cross-sectional view of the first needle bar clip of FIG. 1;
FIG. 5 is a partial view of the hollow positioning guide of FIG. 1;
FIG. 6 is a perspective view of the clasp of FIG. 1;
FIG. 7 is a perspective view of the regulator of FIG. 1;
fig. 8 is a partial schematic view of fig. 1 after installation of the intramedullary nail guide pin in accordance with an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and preferred embodiments.
The specific embodiment of the proximal insertion point positioning and navigating device for the femoral intramedullary nail of the invention is shown in fig. 1 to 8, and comprises a buckle 3, a vertical rod 4, a cross rod 7, a normal guide pin 9, a lateral guide pin 10, a transverse guide pin 12, a guider positioning rod 13 and a hollow positioning guider 14; the buckle 3 comprises a C-shaped clamp 301 and a vertical rod clamp 302 which are integrally formed, a positioning screw rod 1 is arranged at the bottom of the C-shaped clamp 301, and when an opening of the C-shaped clamp 301 is clamped on a side bed frame of the operating bed, the positioning screw rod 1 is rotated to be in threaded fit with the bottom of the C-shaped clamp and then is abutted against the operating bed, so that the C-shaped clamp is clamped and positioned; in addition, the C-shaped clamp can slide along the length direction of the operating table, so that the overall position of the surgical bed can be adjusted conveniently, and the surgical bed is suitable for different surgical environments. The vertical rod clamp 302 is provided with a mounting hole 303 in the vertical direction and a threaded hole 304 in the horizontal direction, the threaded hole 304 is communicated with the mounting hole 303, the bottom end of the vertical rod 4 is slidably arranged in the mounting hole 303, and after the vertical rod 4 is adjusted to a proper mounting height, the locking bolt 2 matched with the threaded hole is screwed and tightly supported on the vertical rod 4, so that the vertical rod 4 is fixed. Preferably, the positioning screw 1 is an L-shaped screw, and the locking bolt 2 is a V-shaped bolt with a V-shaped handle.
A first needle bar clamp 5 and a rod bar clamp 6 are sequentially arranged on a vertical rod 4 above a buckle 3 in a sliding manner from bottom to top, a transverse rod 7 perpendicular to the vertical rod 4 is arranged on the rod bar clamp 6 in a sliding manner, the other end of the transverse rod 7 is also connected with a second needle bar clamp 8 in a sliding manner, a right position guide pin 9 perpendicular to the transverse rod 7 is arranged on the second needle bar clamp 8 in a sliding manner, the first needle bar clamp 5 is also connected with one end of a side position guide pin 10 in a sliding manner, the side position guide pin 10 and the right position guide pin 9 are arranged in parallel in the length direction of the femur, the other end of the side position guide pin 10 is connected with one end of an adjuster 11, a transverse guide pin 12 perpendicular to the side position guide pin 10 is arranged on the adjuster 11 in a sliding manner, the central axis of the side position guide pin 10 and the central axis of the transverse guide pin 12 are positioned on the same horizontal plane, the other end of the adjuster is connected with a positioning rod 13, a hollow positioning guider 14 positioned on the same horizontal plane, the front end of the hollow positioning guide 14 is bent and extended towards the tip direction of the transverse guide pin 12, a guide pin channel 141 is arranged in the hollow positioning guide 14, an inlet 1411 of the guide pin channel 141 is arranged at one side of the hollow positioning guide 14 away from the transverse guide pin 12 so as to be convenient for penetrating into the intramedullary nail guide pin 15, an outlet 1412 is arranged at the front end of the hollow positioning guide 14, and the outlet direction is vertical to the length direction of the transverse guide pin 12 when the invention is adjusted to a proper needle inserting state, so that the intramedullary nail guide pin 15 can be accurately guided along the central axis of the femur.
In this embodiment, the first needle bar clamp 5, the second needle bar clamp 8 and the rod bar clamp 6 have the same structure, and can adjust the angle between the needle and the rod and the angle between the rod and lock and position the needle and the rod, and only the structure of the rod bar clamp 6 is described here; specifically, the rod clamp 6 includes a first clamping portion 61, a second clamping portion 62 and a central shaft 64 penetrating into the first clamping portion and the second clamping portion, the first clamping portion includes a first clamping block 611 and a second clamping block 612 which are mutually buckled, the second clamping portion includes a third clamping block 621 and a fourth clamping block 622 which are mutually buckled, the buckling can be realized by arranging a protrusion on the second clamping block and arranging a groove matched with the protrusion on the first clamping block, so as to ensure that the first clamping block and the second clamping block synchronously rotate and are separated or guided to be buckled along the axial direction of the central shaft. The bottom end of the central shaft 64 is provided with a limit boss 641 in stop fit with the fourth clamping block and an external thread 642 in fit with the internal thread of the fourth clamping block, a spring 63 sleeved on the central shaft is arranged between the second clamping block 612 and the third clamping block 621, anti-slip teeth 65 matched with each other are arranged on the contact surface of the second clamping block 612 and the third clamping block 621, the top end of the central shaft is fixedly provided with a knob 66 in stop fit with the first clamping block 611 in the axial direction, the knob is detachably connected to the top end of the central shaft through thread fit, the contact surface of the first clamping block 611 and the second clamping block 612 is provided with corresponding first cambered surface grooves, so as to form a first clamping hole 67 for clamping the lateral guide pin, a second cambered surface groove corresponding to the third clamping block 621 and the fourth clamping block 622 is arranged on the contact surface, to form a second clipping hole 68 for clipping the vertical rod, the first clipping portion 61 and the second clipping portion 62 can rotate relatively around the central axis to adjust the angle of the first clipping hole 611 and the second clipping hole 612; in this embodiment, the angle between the first clipping hole 611 and the second clipping block 612 is 90 °, so that the vertical rod 4 is perpendicular to the lateral guide pin 10.
As shown in fig. 2, the rod clamp 6 is in an unlocked state, at this time, the first clamping portion 61 and the second clamping portion 62 are separated under the action of the spring, the first clamping block 611 and the second clamping block 612 are manually opened, the first clamping hole is expanded, the cross rod 7 is initially clamped under the action of the elastic force after being placed in the cross rod, the vertical rod is placed in the second clamping hole in the same operation, then the knob 66 is screwed to enable the first clamping portion and the second clamping portion to approach each other, and the spring is compressed; the angle between the clamping holes is adjusted to ensure that the cross rod 7 is vertical to the vertical rod 4 in the spatial position, after the position is adjusted, the knob 66 is continuously screwed, so that the anti-skidding teeth 65 on the opposite end surfaces of the first clamping part and the second clamping part are tightly attached together, the teeth on the anti-skidding teeth are mutually meshed, the further clamping and positioning of the vertical rod 4 and the cross rod 7 are realized, and the angle between the clamping holes can be kept constant.
The first and second needle bar clamps are identical to the rod bar clamp 6 in structure and working principle, and are not described in detail, but when the diameters of the transverse rod/vertical rod and the lateral position/normal position guide pin are different, the inner diameter of the clamping hole can be changed adaptively, for example, as shown in fig. 4, when the diameter of the lateral position guide pin is smaller than that of the vertical rod, the inner diameter of the clamping hole for clamping the lateral position guide pin is smaller than that of the clamping hole corresponding to the vertical rod.
In this embodiment, one end of the adjuster is provided with a first blind hole 111 for detachably inserting the lateral guide pin and a first locking hole 112 communicated with the first blind hole, the other end of the adjuster is provided with a second blind hole 113 for detachably inserting the positioning rod and a second locking hole 114 communicated with the second blind hole, and the middle of the adjuster is provided with a through hole 115 for inserting the transverse guide pin and a third locking hole 116 communicated with the through hole. The axes of the first and second blind holes and the through hole are positioned on the same horizontal plane, so that the lateral guide pin 10, the transverse guide pin 12 and the hollow positioning guide 14 are positioned on the same horizontal plane. Each locking screw is screwed into the corresponding locking hole so as to respectively lock and fix the lateral guide pin 10, the transverse guide pin 12 and the hollow positioning guide 14.
Preferably, the front end of the hollow positioning guide 14 is quadrangular frustum pyramid, so that blunt injury of soft tissues can be reduced, and positioning is facilitated.
Preferably, the tail part of the hollow positioning guide 14 is of a stepped shaft structure, the sliding part 142 with a smaller diameter of the stepped shaft slides in the sliding hole 1301 so as to adjust the position of the front end of the hollow positioning guide and to make the front end of the hollow positioning guide abut against the transverse guide pin, the sliding part is in a cylindrical or rectangular shape with the same height as the sliding hole, the upper and lower end surfaces of the rectangular sliding part are in surface contact with the wall of the sliding hole, so that the whole hollow positioning guide and the transverse guide pin are kept at the same horizontal plane during the operation.
The working process of the invention is as follows:
the invention is clamped on the side part bedstead at one side of the thigh of the operating bed for a patient to lie through the buckle 3, before an operation, the angle between the first clamping part and the second clamping part on the rod clamp 6 is adjusted, so that the vertical rod 4 is vertical to the cross rod 7, and the first needle rod clamp and the second needle rod clamp are adjusted in the same way, so that the side guide needle is vertical to the vertical rod, and the normal guide needle is vertical to the cross rod. The intersection line of the femoral correction midline section and the femoral side midline section is the femoral central axis. During surgery, a patient lies on the operating table, the first needle bar clamp 5 is adjusted to be in the upper position and the lower position on the vertical bar 4, the lateral guide pin 10 is perpendicular to the vertical bar 4 and is attached to the lateral surface of the thigh of the patient, then a perspective machine is used for projecting the lateral position of the femur, and if deviation exists, the lateral guide pin is adjusted to be aligned with the lateral midline of the femur; then the height of the rod clamp and the position of the second needle rod clamp on the cross rod are adjusted, so that the correction guide pin is attached to the middle part above the thigh of the patient, namely the thigh correction center line, the femur correction is projected by using a perspective machine, if deviation exists, the correction guide pin is adjusted to be aligned with the femur correction center line, and at the moment, the invention marks the correction and the side center line of the femur through the external side guide pin 10 and the correction guide pin 9. Then, the fastening position of the transverse guide pin 12 in the adjuster is adjusted, so that the tip of the transverse guide pin 12 is positioned on the vertical surface where the normal guide pin 9 is positioned and the tip of the transverse guide pin is abutted against the greater trochanter of the femur, and the point pointed by the tip of the transverse guide pin is positioned on the central axis of the femur, thereby determining the optimal needle feeding point of the intramedullary nail guide pin and the optimal nail feeding point of the intramedullary nail. Then support horizontal guide pin most advanced with the quadrangular frustum pyramid of hollow positioning guider 14 head end, then insert intramedullary nail guide pin 15 into the guide pin passageway and wear out from the export at quadrangular frustum pyramid terminal and support on the needle entering point, penetrate the intramedullary nail guide pin at last the thighbone, then the intramedullary nail guide pin finally drills into required position along the thighbone axis to subsequent accurate implantation of intramedullary nail.
The above description is only a preferred embodiment of the present invention, and any person skilled in the art can make any simple modification, equivalent change and modification to the above embodiments according to the technical essence of the present invention without departing from the scope of the present invention, and still fall within the scope of the present invention.
Claims (8)
1. A proximal needle feeding point positioning and navigating device for a femoral intramedullary nail is characterized by comprising a buckle fixed on an operating bed and a vertical rod which is arranged on the buckle and is arranged in a sliding way along the vertical direction, wherein the vertical rod is sequentially provided with a first needle rod clamp and a rod clamp in a sliding way from bottom to top, a transverse rod which is perpendicular to the vertical rod is arranged on the rod clamp in a sliding way, the transverse rod is also connected with a second needle rod clamp in a sliding way, a right guide pin which is perpendicular to the transverse rod is arranged on the second needle rod clamp in a sliding way, the first needle rod clamp is also connected with one end of a side guide pin in a sliding way, the side guide pin and the right guide pin are arranged in parallel, the other end of the side guide pin is connected with one end of an adjuster, a transverse guide pin which is on the same horizontal plane and perpendicular to the side guide pin is arranged on the adjuster in a sliding way, the other end of the adjuster is connected with a positioning rod, a hollow positioning guider which, the hollow positioning guider front end is equipped with the guide pin passageway towards the most advanced bending extension of horizontal guide pin in this hollow positioning guider, and the entry of guide pin passageway is seted up in the hollow positioning guider one side that deviates from horizontal guide pin, and the direction that hollow positioning guider front end and export were located in the export is mutually perpendicular with horizontal guide pin length direction.
2. The device for locating and navigating the proximal insertion point of the femoral intramedullary nail of claim 1, wherein: the buckle includes that integrated into one piece's C type presss from both sides and the montant clamp splice, and C type presss from both sides bottom threaded connection one and is used for pressing from both sides the locking screw rod of fixing at the operation table lateral part with the C type, offers the mounting hole that supplies the montant to wear to adorn and the screw hole that communicates with the mounting hole on the montant clamp splice, and threaded hole is equipped with and is used for compressing tightly the locking bolt of location with the montant.
3. The device for locating and navigating the proximal insertion point of the femoral intramedullary nail of claim 1, wherein: the rod clamp comprises a first clamping part, a second clamping part and a central shaft which is arranged in the first clamping part and the second clamping part in a penetrating way, the first clamping part comprises a first clamping block and a second clamping block which are buckled with each other, the second clamping part comprises a third clamping block and a fourth clamping block which are buckled with each other, the bottom end of the central shaft is provided with a limit boss which is matched with the fourth clamping block in a blocking way and an external thread which is matched with the internal thread of the fourth clamping block, a spring which is sleeved on the central shaft is arranged between the second clamping block and the third clamping block, the contact surface of the second clamping block and the third clamping block is provided with anti-skidding teeth which are matched with each other, the top end of the central shaft is fixedly provided with a knob which is matched with the first clamping block in an axial blocking way, the junction of the first clamping block and the second clamping block is provided with a corresponding first cambered surface groove to form a first clamping hole for clamping a transverse rod, the junction of the third clamping block and the fourth clamping block is provided with a corresponding second cambered surface groove to form a second clamping hole for, the first clamping part and the second clamping part can relatively rotate around a central shaft so as to adjust the angle of the first clamping hole and the second clamping hole;
the first needle bar clamp and the second needle bar clamp have the same structure as the rod clamp.
4. The device for locating and navigating the proximal insertion point of the femoral intramedullary nail of claim 3, wherein: the knob is detachably connected to the top end of the central shaft.
5. The device for locating and navigating the proximal insertion point of the femoral intramedullary nail of claim 1, wherein: regulator one end is equipped with the first blind hole that is used for cartridge side position guide pin and the first locking hole with this first blind hole intercommunication, and the other end is equipped with the second blind hole that is used for cartridge locating lever and the second locking hole that communicates with the second blind hole, and the regulator middle part is equipped with the through-hole that is used for wearing to adorn horizontal guide pin and the third locking hole that communicates with the through-hole.
6. The device for locating and navigating the proximal insertion point of the femoral intramedullary nail of claim 1, wherein: the front end of the hollow positioning guider is in a quadrangular frustum pyramid shape.
7. The device for locating and navigating the proximal insertion point of the femoral intramedullary nail of claim 1, wherein: the sliding part of the hollow positioning guider in the sliding hole and the front end main body form a stepped shaft.
8. The device for locating and navigating the proximal insertion point of the femoral intramedullary nail of claim 7, wherein: the sliding part is cylindrical or cuboid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010747433.9A CN111728685A (en) | 2020-07-29 | 2020-07-29 | Proximal insertion point positioning and navigation device for femoral intramedullary nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010747433.9A CN111728685A (en) | 2020-07-29 | 2020-07-29 | Proximal insertion point positioning and navigation device for femoral intramedullary nail |
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| CN111728685A true CN111728685A (en) | 2020-10-02 |
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| CN202010747433.9A Pending CN111728685A (en) | 2020-07-29 | 2020-07-29 | Proximal insertion point positioning and navigation device for femoral intramedullary nail |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253973A (en) * | 2020-11-11 | 2021-01-22 | 河南科技大学第一附属医院 | Medical endoscope fixed bolster device |
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2020
- 2020-07-29 CN CN202010747433.9A patent/CN111728685A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253973A (en) * | 2020-11-11 | 2021-01-22 | 河南科技大学第一附属医院 | Medical endoscope fixed bolster device |
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