CN218899658U - Minimally invasive guiding and resetting fixer for pelvic pubic ramus fracture - Google Patents

Abstract

The utility model discloses a minimally invasive guiding and resetting fixer for pelvic pubic ramus fracture, which comprises a guide pin part, a handle part and a probe which are sequentially connected in series, wherein through holes are formed in the middle parts of the handle part and the probe in a penetrating manner, and the guide pin part is connected with the through holes in a sliding manner. Compared with the prior art, the utility model has the following technical effects: the minimally invasive guiding and resetting fixer for pelvic pubic ramus fracture not only avoids damage to blood circulation, but also is reliable in fixation, does not obstruct the growth of poroma, and is elastically fixed with a certain biological tension.

Description

Minimally invasive guiding and resetting fixer for pelvic pubic ramus fracture

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a minimally invasive guiding and resetting fixer for pelvic pubic ramus fracture.

Background

The main treatment method for the pelvic pubic ramus fracture at present is to cut a reduction steel plate screw internal fixation operation, so that the operation wound is large, the operation bleeding is more, various complications are easy to cause, the postoperative wound is not attractive, and a tool and a method for minimally invasive treatment for the pelvic pubic ramus fracture are absent.

Pubic ramus fracture is the most common among pelvic fractures, and pubic ramus is also an important component of the pelvic anterior ring. The fracture end displacement of the pelvic pubic ramus fracture and the effective firm internal fixation of the screw are recovered by a minimally invasive method, so that the purpose of minimally invasive treatment can be achieved, complications are effectively reduced, and the method has positive significance for prognosis and recovery of patients.

Therefore, a device capable of avoiding huge wounds and strongly resetting and fixing is required to be designed, so that the minimally invasive internal fixation can be realized, and the fixing effect can be ensured.

Disclosure of Invention

The utility model aims to: aiming at the prior art, a minimally invasive guiding and resetting fixer for pelvic pubic ramus fracture is provided,

the technical scheme is as follows: the utility model provides a pelvis pubic ramus fracture wicresoft direction reduction fixer, includes guide pin portion, handle portion and the probe of concatenating in proper order, wherein the handle portion with the middle part of probe all runs through and is provided with the through-hole, guide pin portion sliding connection in the through-hole.

Preferably, the guide pin part comprises a guide pin cover, the guide pin cover is connected with the handle part, the guide pin is fixedly connected in the guide pin cover, the guide pin is connected with the through hole in a sliding manner, a guide wire hole is formed in the guide pin, and a guide wire is connected in a sliding manner in the guide wire hole.

Preferably, the handle portion includes the handle pole, the one end threaded connection of handle pole has first lock sleeve, the outside of first lock sleeve is equipped with still that the cover is equipped with the handle inner core, the one end of handle inner core is connected with the handle lid, the outside cover of handle inner core is equipped with the handle cover, the other end cover of handle pole is established sliding connection and is had the second lock sleeve, the second lock sleeve with be equipped with the spring between the handle pole, one side of spring the steel ball is connected in the handle pole sliding connection, the steel ball card with connect in the probe.

Preferably, a clamping groove is formed in the side wall of one end of the probe, the steel ball is clamped and connected to the clamping groove, and the through holes are formed in the middle of the probe, the handle rod, the first locking sleeve and the handle cover.

Preferably, the tail end of the probe is horizontally arranged or obliquely arranged at 3-7 degrees.

Preferably, the tail end of the probe is provided with scale marks.

Preferably, the line section of the probe with the graduation is in a triangular prism shape.

The beneficial effects are that:

1) According to the utility model, the scale line section at the tail end of the probe is in a triangular prism shape, so that the stress intensity of the probe is greatly improved;

2) According to the utility model, two different probes are arranged, so that the guide rod can be used according to different conditions, the inclined guide rod can reset the fracture position more conveniently and guide the guide wire to pass, and the guide wire can be guided to deviate from the acetabulum;

3) The outer side walls of the two probes are provided with scales, so that the length of the required lag screw can be directly read, and the operation time and steps are greatly saved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic view of the structure of the guide pin portion of the present utility model;

FIG. 3 is a schematic view of the handle portion structure of the present utility model;

FIG. 4 (a) is a schematic cross-sectional view of a horizontally disposed probe according to the present utility model;

FIG. 4 (b) is a schematic view of the structure of the horizontally disposed probe of the present utility model;

FIG. 5 (a) is a schematic cross-sectional view of an obliquely arranged probe of the present utility model;

FIG. 5 (b) is a schematic view of the structure of the obliquely arranged probe of the present utility model;

fig. 5 (c) is a schematic top view of the obliquely arranged probe of the present utility model.

In the figure: a through hole 1; a guide pin cover 2; a guide pin 21; a guidewire port 22; a handle lever 3; a first locking sleeve 31; a handle core 32; a handle cover 33; a handle sleeve 34; a second locking sleeve 35; a spring 36; steel balls 37; a probe 4; a clamping groove 41.

Detailed Description

The utility model is further explained below with reference to the drawings.

The utility model provides a pelvis pubic ramus fracture wicresoft direction reduction fixer, includes guide pin portion, handle portion and probe 4 that concatenate in proper order, wherein the handle portion with the middle part of probe 4 all runs through and is provided with through-hole 1, guide pin portion sliding connection in through-hole 1.

The guide needle part comprises a guide needle cover 2, the guide needle cover 2 is connected to the handle part, a guide needle 21 is fixedly connected in the guide needle cover 2, the guide needle 21 is connected to the through hole 1 in a sliding mode, a guide wire hole 22 is formed in the guide needle 21, and a guide wire is connected in a sliding mode in the guide wire hole 22.

The handle portion includes handle pole 3, the one end threaded connection of handle pole 3 has first lock sleeve 31, the outside of first lock sleeve 31 is equipped with still the cover and is equipped with handle inner core 32, the one end of handle inner core 32 is connected with handle lid 33, the outside cover of handle inner core 32 is equipped with handle cover 34, the other end cover of handle pole 3 is established sliding connection and is had second lock sleeve 35, second lock sleeve 35 with be equipped with spring 36 between the handle pole 3, one side of spring 36 the steel ball 37 is connected in the interior sliding connection of handle pole 3, steel ball 37 card with connect in probe 4.

The clamping groove 41 is formed in the side wall of one end of the probe 4, the steel ball 37 is clamped and connected to the clamping groove 41, and the through hole 1 is formed in the middle of the probe 4, the handle rod 3, the first locking sleeve 31 and the handle cover 33.

The tail end of the probe 4 is horizontally arranged or obliquely arranged at 3-7 degrees.

The tail end of the probe 4 is provided with scale marks.

The probe 4 is in a triangular prism shape.

Principle of operation:

as shown in fig. 1 and 3, when the probe 4 is connected with the handle, the second locking sleeve 35 is moved rightward until the steel ball 37 can move up and down, then the probe 4 is pulled out, when the probe is installed, the second locking sleeve 35 is also moved rightward until the steel ball 37 can move up and down, then the second locking sleeve 35 is released, the spring 36 is reset, the second locking sleeve 35 drives the steel ball 37 to move so that the steel ball 37 and the clamping groove 41 are clamped, the probe 4 and the handle rod 3 are connected into a whole, then the handle rod 3 is connected with one end of the first locking sleeve 31 in a threaded manner, then the handle cover 34 is screwed on one end of the handle inner core 32, finally the guide needle 21 is inserted into the through hole 1, the guide needle cover 2 is screwed on the handle cover 34, and a guide wire is inserted into the guide wire hole 22, so that a fixer is formed in an assembly manner;

the operation is performed under general anesthesia, the patient is placed on an orthopedics traction bed (or an orthopaedics operation bed) after being anesthetized, the patient is traction and reset by a manipulation, the patient is subjected to C-arm machine lower perspective, after at least two doctors in a professional group confirm that the reset is good, the patient is conventionally sterilized and covered, the pubic symphysis side 2CM is opened by about 2CM, and an orthopedics phi 3.5 power drill is opened;

holding the handle 2, stretching one end of the probe 4 of the fixer into the pubic ramus fracture part through the opening, slowly rotating the fixer into the fracture part until one end of the probe 4 passes through the fracture part (connecting two bones in series), acquiring the surface scale of the probe 4 after the perspective position of the C-arm machine is good, selecting a corresponding hollow lag screw according to the scale, then pulling out the fixer, reserving a guide wire, screwing the hollow lag screw with a proper length phi 6.0 along the guide wire, pulling out the guide wire after the hollow lag screw is in place (connecting two bones in series), and completing the operation ending work.

The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which are intended to be comprehended within the scope of the present utility model.

Claims (7)

1. The utility model provides a pelvis pubic ramus fracture wicresoft direction reduction fixer, its characterized in that, including guide pin portion, handle portion and probe (4) that concatenate in proper order, wherein the handle portion with the middle part of probe (4) all runs through and is provided with through-hole (1), guide pin portion sliding connection in through-hole (1).

2. The minimally invasive guide reduction fixator for pelvic pubic ramus fracture according to claim 1, wherein the guide needle part comprises a guide needle cover (2), the guide needle cover (2) is connected to the handle part, a guide needle (21) is fixedly connected in the guide needle cover (2), the guide needle (21) is slidably connected to the through hole (1), a guide wire hole (22) is formed in the guide needle (21), and a guide wire is slidably connected in the guide wire hole (22).

3. The minimally invasive guiding and resetting fixator for pelvic pubic ramus fracture according to claim 2, wherein the handle portion comprises a handle rod (3), a first locking sleeve (31) is arranged at one end of the handle rod (3), a handle inner core (32) is further sleeved outside the first locking sleeve (31), a handle cover (33) is connected to one end of the handle inner core (32), the handle cover (33) is connected with the guide needle cover (2), a handle sleeve (34) is sleeved outside the handle inner core (32), a second locking sleeve (35) is sleeved at the other end of the handle rod (3), a spring (36) is arranged between the second locking sleeve (35) and the handle rod (3), steel balls (37) are connected in a sliding mode on one side of the spring (36) and are connected to the probe (4) in a clamping mode.

4. A pelvic pubic ramus fracture minimally invasive guiding and resetting fixer according to claim 3, characterized in that a clamping groove (41) is formed in one end side wall of the probe (4), the steel ball (37) is clamped and connected with the clamping groove (41), and the through hole (1) is formed in the middle of the probe (4), the handle rod (3), the first locking sleeve (31) and the handle cover (33).

5. A minimally invasive guided reduction fixator for pelvic pubic ramus fracture according to claim 1, characterized in that the tip of the probe (4) is arranged horizontally or inclined at 3-7 degrees.

6. A minimally invasive guided reduction fixator for pelvic pubic ramus fracture according to claim 1 wherein the tip of the probe (4) is provided with graduation marks.

7. A minimally invasive guided reduction fixator for pelvic pubic ramus fracture according to claim 1 wherein the probe (4) has a triangular prism-like end with graduation line segments.

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