CN215688366U

CN215688366U - Implanting tool for implant of femoral neck fracture patient

Info

Publication number: CN215688366U
Application number: CN202121604636.9U
Authority: CN
Inventors: 陈晓琥
Original assignee: Changzhou Kangding Medical Instrument Co ltd
Current assignee: Changzhou Kangding Medical Instrument Co ltd
Priority date: 2021-07-14
Filing date: 2021-07-14
Publication date: 2022-02-01
Anticipated expiration: 2031-07-14

Abstract

The utility model belongs to the technical field of medical instruments, particularly relates to the field of A61B17/68, and particularly relates to an implantation tool for an implant of a femoral neck fracture patient. The utility model provides an implant tool for a femoral neck fracture patient implant, which comprises a first component and a second component; the first component comprises a first straight part, and the first straight part is provided with an open slot; the first component further comprises an extension part, and the extension part extends from the proximal end of the first straight part to the reverse direction of the open slot; the extension part and the first straight part form an acute angle; the second component comprises a second straight part, and the second straight part and the first straight part are arranged in a matched mode through the open slot; the second component further comprises a hole passage part, the hole passage part is overlapped and fixedly connected with the near end of the second straight part, and the far end of the hole passage part is separated by a plurality of distances and fixedly connected with the far end of the second straight part.

Description

Implanting tool for implant of femoral neck fracture patient

Technical Field

The utility model belongs to the technical field of medical instruments, particularly relates to the field of A61B17/68, and particularly relates to an implantation tool for an implant of a femoral neck fracture patient.

Background

Femoral neck fractures are a clinically common type of fracture, frequently occurring in low energy injuries in elderly patients and high energy injuries in young patients. Chinese patent publication No. CN211300278U provides a stable intramedullary fixation device for femoral neck fracture angle, which adopts three hollow nails to fix the fractured femoral neck, increases the anti-rotation ability by dispersed fixation, and enhances the stability of fracture reduction and healing; chinese patent publication No. CN108742807A provides an intussusception structure for reduction of femoral neck fractures, said intussusception structure comprising: a sleeve and a first screw; the diameter of the first screw is matched with that of the sleeve; the tail part of the first screw is arranged in the sleeve; the head of the first screw is of a thread-like structure; the sleeve consists of a sleeve head part, a sleeve middle part and a sleeve bottom part, and in a biomechanical structure, the directional sliding structure of the independent sleeve and the locking screw is adopted, so that the effect of synchronously limiting rotation is enhanced while the power pressurization effect is enhanced exponentially. Not only can effectively overcome the defect of poor anti-rotation capability of the traditional DHS; can further keep the reduction and tight embedding of the fracture, reduce the non-healing rate and reduce the complications. For example, as shown in the above patents, the main internal fixation method is the DHS dynamic hip screw system, which has good mechanical stability, but is complex in operation, large in wound and long in operation time; the other three hollow nails are fixed in the internal, which belongs to the minimally invasive surgery type, but the mechanical stability is not good, the patient can not get in the field as early as possible after the surgery, and the rehabilitation time is longer.

In recent years, a dynamic cross nail which integrates two advantages of good mechanical stability of DHS and minimally invasive implantation of three hollow nails appears and is used for treating femoral neck fracture; structurally comprises an implantation sleeve, a power rod, a compression screw, a top plate and the like, and the fracture incision of the femoral neck treated by the power cross nail is smaller and has higher mechanical stability. But the dynamic cross nail has complex shape and structure, small wound but high implantation difficulty, needs to arrange a plurality of implantation points on the femoral neck, needs to provide an implantation tool which has simple and convenient operation, accurate selection of the implantation points and no need of enlarging the wound,

SUMMERY OF THE UTILITY MODEL

In view of the above problems, the present invention provides an implant tool for an implant for a patient with femoral neck fracture, comprising a first part and a second part; the first component comprises a first straight part, and the first straight part is provided with an open slot; the first component further comprises an extension part, and the extension part extends from the proximal end of the first straight part to the reverse direction of the open slot; the extension part and the first straight part form an acute angle; the second component comprises a second straight part, and the second straight part and the first straight part are arranged in a matched mode through the open slot; the second component further comprises a hole passage part, the hole passage part is overlapped and fixedly connected with the near end of the second straight part, and the far end of the hole passage part is separated by a plurality of distances and fixedly connected with the far end of the second straight part.

As a preferable technical solution, a distal end of the first flat portion is provided with a locking groove, and an extending direction of the locking groove coincides with an extending direction of the extending portion.

As a preferable technical solution, one end of the extension portion, which is far away from the first straight portion, is provided with a plurality of first drill bushing holes, and the plurality of first drill bushing holes are arranged in parallel on the extension portion.

As a preferable technical solution, the axial direction of the first drill sleeve hole is perpendicular to the extending direction of the extending portion, and is directed from the end of the extending portion to the distal end of the first straight portion.

As a preferable technical scheme, a plurality of second drill bushing holes are arranged at the far end of the first straight part, the second drill bushing holes are arranged corresponding to the first drill bushing holes, and the corresponding first drill bushing holes and the second drill bushing holes are arranged in a manner of axial line superposition.

As a preferred technical solution, the proximal end of the first straight portion is provided with an internal thread.

As a preferred technical scheme, a positioning column is arranged at the far end of the second flat straight part, the positioning column is of a smooth cylindrical structure, and a limiting structure is arranged at the root of the positioning column.

As a preferable technical solution, a threaded sleeve is disposed at a proximal end of the second straight portion, the proximal end of the second straight portion is provided with a stepped structure, and the threaded sleeve and the second straight portion are axially and fixedly connected in a one-way manner and are circumferentially and rotatably connected.

As a preferable technical solution, the thread bush is provided with an external thread, and the external thread of the thread bush is matched with the internal thread of the first straight portion.

As a preferable technical solution, the tunnel part is provided as a hollow cylinder structure with openings at both ends.

Has the advantages that:

(1) the utility model provides an implantation tool of an implant of a femoral neck fracture patient, which is used in the treatment process of the femoral neck fracture patient, in particular to the implantation process of a power cross nail, wherein the power cross nail needs to be implanted and fixed into the femoral neck from two different directions at two different parts; the implantation tool provided by the utility model simultaneously provides implantation auxiliary components in two directions, and positioning and implantation of the main implantation nail are provided through the guide column; a pressurizing screw is introduced into the hollow cylinder structure of the through hole channel part to realize the fixation in the first direction; meanwhile, the Rongguo drill sleeve hole provides positioning point selection in the second direction, and the implantation hole is formed and fixed with the implantation nail.

(2) The implantation tool provided by the utility model only comprises two parts, the first part and the second part are respectively of an integrated forming structure, the assembly mode is simple, and the assembly precision and the matching stability are ensured in a mode of combining an open slot with a threaded sleeve for fixing.

(3) The implantation tool provided by the utility model has reasonable structural design, all parts at the far end of the implantation tool and the tool used in cooperation are converged to one point in the use process, and the part needing to be separated and unfolded is arranged at the far end, so that the volume of the part entering a human body is ensured to be very small, the required wound area is effectively reduced, the damage to a patient is reduced, and the minimally invasive effect of the power cross nail is exerted to the maximum extent.

Drawings

FIG. 1 is a schematic structural view of an implantation tool of an implant for a patient with femoral neck fracture according to the present invention;

FIG. 2 is a front view of the first member;

FIG. 3 is a schematic top view of the first member;

FIG. 4 is an enlarged schematic view at B in FIG. 2;

FIG. 5 is an enlarged schematic view at C in FIG. 2;

FIG. 6 is a schematic structural view of the second member;

FIG. 7 is a cross-sectional structural view of the second member;

FIG. 8 is a reference schematic view of a use state of the powered cross pin;

the device comprises a first component 1, a first straight part 11, a clamping groove 1101, a second drill bushing hole 1102, a second extension part 12, a first drill bushing hole 1201, a second component 2, a second straight part 21, a positioning column 2101, a threaded sleeve 2102, a tunnel part 22 and a power cross pin 3.

Detailed Description

As used herein, "proximal" refers to the end of the medical device that is closer to the clinician using the medical device; "distal" refers to the end of the medical device that is distal from the physician when using the medical device; the term conforms to the custom made in the medical device industry.

As shown in fig. 8, power alternately nail 3 includes mainly implants nail and fixed plate, and the nail is implanted to main and the fixed plate is certain angle setting, and it is fixed that main implantation nail is used for installing the implantation that power nail accomplished a direction, and the fixed plate is used for adding set screw and accomplishes the implantation of second direction fixed to fix the femoral neck from two directions, guarantee its structural strength.

An implant tool for a femoral neck fracture patient implant as shown in figures 1-7 comprises a first component 1 and a second component 2; the first component 1 comprises a first straight part 11, and the first straight part 11 is provided with an open slot; the first component 1 further comprises an extension 12, wherein the extension 12 extends from the proximal end of the first straight part 11 to the opposite direction of the open slot; the extension part 12 and the first straight part 11 form an acute angle; the second component 2 comprises a second straight part 21, and the second straight part 21 is matched with the first straight part 11 through the open slot; the second component 2 further comprises a duct portion 22, the duct portion 22 is overlapped and fixedly connected with the proximal end of the second straight portion 21, and the distal end of the second straight portion is separated by a plurality of distances and fixedly connected with the distal end of the second straight portion.

In some preferred technical solutions, a distal end of the first straight portion 11 is provided with a slot 1101, and an extending direction of the slot 1101 is identical to an extending direction of the extending portion 12.

In some preferred technical schemes, the clamping groove is used for connecting a fixing plate of the power cross nail and providing a mounting structure for the matching of the power cross nail and the implantation tool.

In some preferred technical solutions, a plurality of first drill bushing holes 1201 are disposed at an end of the extension portion 12 away from the first straight portion 11, and the plurality of first drill bushing holes 1201 are disposed in parallel on the extension portion 12.

In some preferred technical solutions, the axial direction of the first drill sleeve hole 1201 is perpendicular to the extending direction of the extension portion 12, and is directed to the distal end of the first straight portion 11 from the end of the extension portion 12.

In some preferred technical solutions, a plurality of second drill bushing holes 1102 are provided at a distal end of the first straight portion 11, the second drill bushing holes 1102 are provided corresponding to the first drill bushing holes 1201, and the corresponding first drill bushing holes 1201 and second drill bushing holes 1102 are provided with axes coinciding.

In some preferred technical scheme, first brill trepanning and second brill trepanning are used for this implantation instrument and drilling equipment's cooperation, and main implantation nail is implanted and fixed back, and the fixed part is attached on the femoral neck, and drilling instrument passes through the location and the fixed function of first brill trepanning and second brill trepanning are drilled the femoral neck and are implanted with set screw, guarantee the structural strength of power alternately nail.

In some preferred embodiments, the proximal end of the first straight portion 11 is provided with an internal thread.

In some preferred technical solutions, a positioning post 2101 is disposed at a distal end of the second flat portion 21, the positioning post 2101 is configured as a smooth cylindrical structure, and a position limiting structure is disposed at a root of the positioning post 2101.

In some preferred technical solutions, a threaded sleeve 2102 is disposed at a proximal end of the second straight portion 21, the proximal end of the second straight portion 21 is configured in a stepped structure, and the threaded sleeve 2102 and the second straight portion 21 are axially configured in a one-way fixed connection and circumferentially configured in a rotatable connection.

In some preferred embodiments, the threaded sleeve 2102 has an external thread, and the external thread of the threaded sleeve 2102 is matched with the internal thread of the first straight portion 11.

In some preferred technical solutions, the tunnel part 22 is configured as a hollow cylinder structure with two open ends; the hollow cylinder structure of the hole part is used for drilling and implanting fixation in the process of implanting the compression screw.

The working principle is as follows: the slide bar of the power cross nail 3 is arranged in the positioning inner hole of the implanted steel plate of the power cross nail 3, the assembly platform of the power cross nail 3 is assembled with the clamping groove of the first component 1, the second component 2 is arranged in the first component 1 through the open groove of the first component 1, the positioning hole of the power cross nail 3 is inserted in the positioning column of the second component 2, a certain gap is formed between the end face of the positioning column of the second component 2 and the end face of the slide bar of the power cross nail 3 at the moment, the slide bar can slide after the operation conveniently, the movable compression of the fracture is realized, and the healing is facilitated. And then the external thread of the second component 2 is matched and screwed with the internal thread of the first component 1, so that the assembly relation of the power cross nail 3 and the first component 1 is realized, and meanwhile, the power cross nail 3 cannot be separated from the first component 1. Implanting the assembled structure power cross nail 3 sliding rod and power cross nail 3 into the outer leakage end of a steel plate, placing the assembled structure power cross nail 3 sliding rod and power cross nail 3 sliding rod into an inner hole pre-drilled at a femoral neck fracture part, contacting the outer leakage surface at a clamping groove of the power cross nail 3 femoral surface, placing the assembled structure power cross nail 3 sliding rod and power cross nail 3 sliding rod at a proper middle position, facilitating a drill bit and a sleeve to drill a bottom hole of a locking screw to be implanted additionally through a drill sleeve hole of a first component 1, screwing the locking screw into the locking screw through the sleeve by a spanner hand, finally connecting the locking screw with an internal thread of the power cross nail 3 implanted steel plate, facilitating a corresponding compression screw to drill a hole through a drill bit of a second component 2 and a compression screw hole by the drill bit of a second component 2, drilling a bottom hole of a compression screw of the power cross nail 3, taking out the drill bit, implanting and locking the compression screw of the power cross nail 3 through the drill bit of the second component 2 and the compression screw hole by the spanner hand, thereby completing the implantation action of the dynamic cross pin 3 prosthesis.

Claims

1. An implant tool for an implant for a patient with femoral neck fracture, characterized by comprising a first part (1) and a second part (2); the first component (1) comprises a first straight part (11), and the first straight part (11) is provided with an open slot; the first part (1) further comprises an extension (12), the extension (12) extending from the proximal end of the first straight portion (11) in a direction opposite to the open slot; the extension part (12) and the first straight part (11) form an acute angle; the second component (2) comprises a second straight part (21), and the second straight part (21) is matched with the first straight part (11) through the open slot; the second component (2) further comprises a hole passage part (22), the hole passage part (22) is overlapped and fixedly connected with the near end of the second straight part (21), and the far end is separated by a plurality of distances and fixedly connected.

2. The implant tool for a femoral neck fracture patient implant according to claim 1, characterized in that the distal end of the first flat portion (11) is provided with a notch (1101), the extension direction of the notch (1101) coinciding with the extension direction of the extension portion (12).

3. The implantation tool of an implant for a patient with femoral neck fracture according to claim 1 or 2, characterized in that the end of the extension portion (12) remote from the first flat portion (11) is provided with a plurality of first drill holes (1201), and a plurality of the first drill holes (1201) are arranged side by side on the extension portion (12).

4. The implant tool for femoral neck fracture patient implants according to claim 3, characterized in that the axial direction of the first drill hole (1201) is perpendicular to the extension direction of the extension portion (12), pointing from the end of the extension portion (12) to the distal end of the first straight portion (11).

5. The implant tool for the implant of the patient with the femoral neck fracture as claimed in claim 4, wherein the distal end of the first flat part (11) is provided with a plurality of second drill sleeve holes (1102), the second drill sleeve holes (1102) are arranged corresponding to the first drill sleeve holes (1201), and the corresponding first drill sleeve holes (1201) and second drill sleeve holes (1102) are arranged with the axes thereof coincident.

6. The implantation tool of an implant for a patient with femoral neck fracture according to claim 1, characterized in that the proximal end of the first flat portion (11) is provided with an internal thread.

7. An implantation tool of an implant of a femoral neck fracture patient according to claim 1, characterized in that a distal end of the second straight part (21) is provided with a positioning column (2101), the positioning column (2101) is provided with a smooth cylindrical structure, and a root of the positioning column (2101) is provided with a limit structure.

8. An implant tool for a femoral neck fracture patient implant according to claim 6, wherein the proximal end of the second straight portion (21) is provided with a threaded sleeve (2102), the proximal end of the second straight portion (21) is provided with a stepped structure, and the threaded sleeve (2102) and the second straight portion (21) are axially provided with a one-way fixed connection and circumferentially provided with a rotatable connection.

9. An implantation tool of an implant for a femoral neck fracture patient according to claim 8, wherein the threaded sleeve (2102) is provided with an external thread, and the external thread of the threaded sleeve (2102) is arranged to match with the internal thread of the first flat portion (11).

10. The implant tool for a femoral neck fracture patient implant according to claim 1, wherein the tunnel portion (22) is provided as a hollow cylinder structure open at both ends.