CN214857009U - Simple operation retractor for minimally invasive surgery of proximal humerus fracture - Google Patents

Abstract

The utility model discloses a simple and easy operation drag hook that humerus proximal end fracture minimal access surgery used relates to the medical treatment surgical instruments field, which comprises a handle, the both sides that the handle is a cavity pipeline and symmetry all are equipped with an opening that link up along the axis, handle outside cover is equipped with a stop collar, the handle inboard is equipped with a ball screw, ball screw includes ball nut and lead screw, all be equipped with a return spring between the upper and lower both ends of ball nut rear side and the inboard of handle rear end, threaded connection is equipped with a lead screw in the middle of the ball nut, the lead screw front end is connected with a Y type support, the below of two free ends of support is equipped with a drag hook respectively, one side of handle is equipped with a spacing recess, spacing recess bottom is equipped with spacing tooth, spacing recess top is equipped with limit button. Adopt the technical scheme of the utility model can let medical personnel more conveniently draw out near the tissue of operation wound and control the operation field of vision, use manpower sparingly.

Description

Simple operation retractor for minimally invasive surgery of proximal humerus fracture

Technical Field

The utility model relates to the field of medical surgical instruments, in particular to a simple surgical retractor for minimally invasive surgery of proximal humerus fracture.

Background

The incidence rate of proximal humerus fracture is about 4% -5% of that of general fracture, the traditional internal fixation treatment of incision reduction steel plates has large injury and many complications, and particularly, the internal fixation failure is more likely to occur to patients with osteoporosis. Because of the minimally invasive surgery, the wound is only about 3cm, and in order to ensure clear and bright visual field during the surgery, an operator usually needs to hook the rotator cuff and the biceps brachii longhead tendon in the wound by using a drag hook, so that the nail can be conveniently inserted.

The existing surgical retractor for minimally invasive surgery of proximal humerus fracture is mostly replaced by an S-shaped hook with a wide hook or other small instruments with a hook-shaped front end, such as a pair of sand forceps, but the instruments are not matched in shape and easy to damage tissues, and medical care personnel need to pull the instruments all the time because of muscle contraction.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a simple and easy operation drag hook that humerus proximal end fracture minimal access surgery used to solve the not adaptation of current drag hook and the smooth difficult problem of holding between the fingers of handle, the operation field of vision is not well controlled, the problem of extravagant manpower.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a simple and easy operation drag hook that humerus proximal end fracture minimal access surgery used, includes the handle, the front end fixedly connected with Y type support of handle, the below of two free ends of support is equipped with a drag hook respectively, the handle all is equipped with a through opening that link up along the axis for a cavity pipeline and both sides, handle outside cover is equipped with a stop collar, the handle inboard is equipped with a ball, ball includes ball nut and lead screw, all be equipped with a return spring between the upper and lower both ends of ball nut rear side and the inboard of handle rear end, ball nut passes through opening and stop collar fixed connection, the lead screw front end is connected with the support.

Adopt this technical scheme, when the wound is drawn out to needs, if only need draw out one side wound, then can push away the stop collar to the handle foremost, ball nut moves forward along with the stop collar this moment, makes the lead screw rotatory, and Y type support is inside shrink under the effect of lead screw, makes two hooks of front end closely together, catches on corresponding tissue with two hooks again, and single hand is held the handle and is outwards pulled at last, draws out the wound, and is convenient and laborsaving.

If need lead out the tissue of wound both sides simultaneously, then can push away to foremost with the stop collar earlier, make two draw hooks closely be in the same place, use other to pull open the wound slightly together, put into the wound with the draw hook, adjust the direction of two draw hooks, make it catch on the tissue of both sides respectively, then support the rear end of handle with the thumb, reuse forefinger and well directional back promote the stop collar, ball nut moves backward along with the stop collar this moment, make the lead screw rotatory, Y type support outwards opens under the effect of lead screw and drives the draw hook and outwards lead out the tissue, expose the scene in the wound, need get rid of the draw hook after the operation finishes, then release the stop collar, under return spring's effect, push forward the stop collar to foremost, can take out whole device.

Preferably, the two sides of the limiting sleeve corresponding to the through opening are respectively and rotatably connected with a finger buckle.

When the medical care personnel can use, the thumb supports the rear end of the handle, the index finger and the middle finger respectively buckle the finger buckle, the medical care personnel can adjust the position of the limiting sleeve at any time conveniently, and the finger buckle can be buckled and the handle can be pulled backwards after the position of the limiting sleeve is fixed, so that the convenience and labor saving are realized.

Preferably, Y type support includes fixed bolster and movable support, the fixed bolster includes fixed part and extension, the fixed part is the cavity pipeline that a cross-section is the rectangle, and with handle fixed connection, the lead screw front end has the gear and runs through one side of fixed part, movable support includes horizontal rack and extension, horizontal rack wears to arrange inside the fixed part, and with the meshing of lead screw front end.

The gear at the front end of the screw rod is meshed with the horizontal rack of the movable support, the fixed support is fixedly connected with the handle, the movable rack can be driven to move left and right when the screw rod rotates, the fixed support does not move, and the support is expanded or contracted.

Preferably, the retractor is freely rotatable and detachable along a vertical axis.

The drag hook can free rotation, can adapt to the wound of various shapes and positions, can not hinder the tissue when retracting the tissue of wound both sides, and in addition, the drag hook can be dismantled and change, can use in other operations through the drag hook of changing different models.

Preferably, the outside of handle is equipped with a spacing recess, spacing recess bottom is equipped with spacing tooth, spacing recess top is equipped with the limit button who runs through the stop collar front end.

When the limiting sleeve moves to a certain position, the limiting button is pressed down, so that the lower part of the limiting button is embedded into the limiting teeth in the limiting groove, and the effect of fixing the limiting sleeve is achieved.

Drawings

Fig. 1 is a schematic structural view of a simple surgical retractor for minimally invasive surgery on proximal humerus fracture according to an embodiment of the present invention;

fig. 2 an embodiment of the present invention provides a cross-sectional view of a handle.

Detailed Description

The invention will be described in further detail with reference to the following drawings and embodiments:

reference numerals in the drawings of the specification include: the handle 1, spacing recess 2, stop collar 3, indicate to detain 4, limit button 5, remove support 6, fixed bolster 7, drag hook 8, lead screw 9, spacing tooth 10, ball nut 11, return spring 12.

As shown in figures 1 and 2, a simple surgical retractor for minimally invasive surgery of proximal humerus fracture comprises a handle 1, wherein the handle 1 is a hollow pipeline, both sides of the handle are provided with a through hole along an axis, the outer side of the handle 1 is sleeved with a limiting sleeve 3, the front end of the handle 1 is fixedly connected with a Y-shaped bracket, the lower part of the front end of the bracket is respectively provided with a freely rotatable and detachable retractor 8, both sides of the limiting sleeve 3 corresponding to the through hole are rotatably connected with a finger buckle 4, the outer side of the handle 1 is provided with a limiting groove 2, the bottom of the limiting groove 2 is provided with a limiting tooth 10, a limiting button 5 penetrating through the front end of the limiting sleeve 3 is arranged above the limiting groove 2, so that the finger buckle 4 can be buckled to move the limiting sleeve 3 or pull the whole device, the limiting button 5 is pressed down, the lower end of the limiting button 5 is embedded into the limiting tooth 10, and the position of the limiting sleeve 3 is fixed, is convenient and labor-saving.

The handle 1 inboard is equipped with a ball screw, ball screw includes ball nut 11 and lead screw 9, lead screw and ball nut threaded connection, all be equipped with a return spring 12 between the upper and lower both ends of ball nut 11 rear side and the inboard of handle 1 rear end, be used for promoting 3 front ends of returning to handle 1 of stop collar, the both sides of ball nut 11 symmetry respectively are equipped with a connecting rod, the connecting rod passes opening and 3 fixed connection of stop collar, lead screw 9 front end have the gear and with Y type leg joint, consequently promote stop collar 3, when driving 11 back-and-forth movements of ball nut, ball nut 11 can drive lead screw 9 and rotate, with this opening and shutting that influences Y type support.

Y type support includes fixed bolster 7 and movable support 6, fixed bolster 7 includes fixed part and extension, the fixed part is the cavity pipeline of a cross-section for the rectangle, and outside one side and 1 front end fixed connection of handle, the lead screw 9 front end runs through one side of fixed part, movable support 6 includes horizontal rack and extension, horizontal rack is worn to arrange inside the fixed part, and with the gear engagement of lead screw 9 front end, just so can be when lead screw 9 rotates, drive and remove movable support 6 and remove, make Y type support expand or contract according to medical personnel's wish.

The specific implementation process is as follows:

when the wound needs to be retracted, if only the tissue of the wound on one side needs to be retracted, the limiting sleeve 3 can be pushed to the foremost end of the handle 1, the ball nut 11 moves forwards along with the limiting sleeve 3 at the moment, the screw rod 9 rotates anticlockwise, the movable support 6 moves rightwards under the action of the screw rod 9, the two drag hooks 8 are tightly closed together, the two drag hooks 8 hook the corresponding tissue, then the medical personnel press the limiting button 5 to fix the position of the limiting sleeve 3, then the index finger and the middle finger buckle 4 are buckled by a single hand, the palm handle 1 is held to be pulled outwards, the wound is retracted, and the operation is convenient and labor-saving.

If tissues on two sides of a wound need to be retracted simultaneously, the limiting sleeve 3 can be pushed to the foremost end to enable the two drag hooks 8 to be close together, other instruments are used for slightly pulling the wound open, the drag hooks 8 are placed in the wound, the directions of the two drag hooks 8 are adjusted to enable the two drag hooks to hook the tissues on two sides respectively, then the thumb is used for propping against the rear end of the handle 1, the forefinger and the middle finger buttons 4 are used for buckling the finger buttons 4 to push the limiting sleeve 3 backwards, the ball nut 11 moves backwards along with the limiting sleeve 3 at the moment, the lead screw 9 rotates clockwise, the movable support 6 moves leftwards to enable the Y-shaped support to expand outwards and drive the drag hooks 8 to retract the tissues outwards, the scene in the wound is exposed, when the limiting sleeve 3 is pushed to a certain position, the limiting button 5 is pressed, the hand can be released to perform an operation again by fixing the position of the limiting sleeve 3, manpower is saved, and when the drag hooks 8 need to be removed, the limiting button 5 is pressed, liberation stop collar 3, under return spring 12's effect, with stop collar 3 forward push to handle 1 foremost, two drag hooks 8 are close together this moment, can take out whole device, and rotatory finger is detained 4 at last, will indicate to detain 4 laminating in the stop collar 3 outside.

In addition, can also dismantle the drag hook 8, change the drag hook 8 of the supporting use of other models and use in other operations, the function is various.

The above description is only an example of the present invention, and the detailed technical solutions and/or characteristics known in the solutions are not described too much here. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims (5)

1. The utility model provides a simple and easy operation drag hook that proximal humerus fracture minimal access surgery used, includes the handle, the front end fixedly connected with Y type support of handle, the below of two free ends of support is equipped with a drag hook, its characterized in that respectively: the handle is a cavity pipeline and both sides all are equipped with a through opening that link up along the axis, handle outside cover is equipped with a stop collar, the handle inboard is equipped with a ball, ball includes ball nut and lead screw, lead screw and ball nut threaded connection, all be equipped with a return spring between the upper and lower both ends of ball nut rear side and the inboard of handle rear end, ball nut passes through opening and stop collar fixed connection, the lead screw front end is connected with the support for control Y type support's opening and shutting.

2. The simple surgical retractor for minimally invasive surgery on proximal humerus fracture according to claim 1, characterized in that: the stop collar all rotates with the corresponding both sides of opening and is connected with a finger and detains.

3. The simple surgical retractor for minimally invasive surgery on proximal humerus fracture according to claim 1, characterized in that: the Y-shaped support comprises a fixed support and a movable support, the fixed support comprises a fixed portion and an extending portion, the fixed portion is a hollow pipeline with a rectangular cross section and is fixedly connected with a handle, the front end of the screw rod is provided with a gear and penetrates through one side of the fixed portion, the movable support comprises a horizontal rack and the extending portion, and the horizontal rack is arranged inside the fixed portion in a penetrating mode and meshed with the front end of the screw rod.

4. The simple surgical retractor for minimally invasive surgery on proximal humerus fracture according to claim 1, characterized in that: the draw hook can freely rotate and be disassembled along the vertical axis.

5. The simple surgical retractor for minimally invasive surgery on proximal humerus fracture according to claim 1, characterized in that: the handle is characterized in that a limiting groove is formed in the outer side of the handle, limiting teeth are arranged at the bottom of the limiting groove, and a limiting button penetrating through the front end of the limiting sleeve is arranged above the limiting groove.

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