CN215550967U

CN215550967U - 3D prints bearing structure

Info

Publication number: CN215550967U
Application number: CN202121564874.1U
Authority: CN
Inventors: 王富友; 杨柳; 陈光兴; 张颖; 范华全; 李倩
Original assignee: First Affiliated Hospital of Army Medical University
Current assignee: First Affiliated Hospital of Army Medical University
Priority date: 2021-07-09
Filing date: 2021-07-09
Publication date: 2022-01-18
Anticipated expiration: 2031-07-09

Abstract

The utility model relates to a 3D printing support structure which comprises a fixed sleeve, a sliding sleeve and an expansion rod group, wherein the sliding sleeve is sleeved outside the fixed sleeve in a sliding mode, the expansion rod group comprises a first rod group, a second rod group and an opening and closing driving mechanism, the first rod group comprises a plurality of support rods which are hinged on the sliding sleeve in an annular mode, the second rod group comprises connecting rods which are arranged corresponding to the support rods one to one, one end of each connecting rod is hinged with the fixed sleeve, the other end of each connecting rod is hinged with the corresponding support rod, the other end of each support rod is hinged on the corresponding sliding sleeve, the opening and closing driving mechanism is fixed with the corresponding sliding sleeve, the sliding sleeve is driven to slide along the fixed sleeve, and the support rods are driven to be opened into an umbrella shape or folded into the outer circle surface of the sliding sleeve. The sliding sleeve slides to drive the supporting rod to move axially, the supporting rod and the connecting rod rotate outwards simultaneously, the diameter of the front end of the supporting rod is enlarged, an umbrella-shaped supporting structure is formed, other tissues in the wound are prevented from invading a printing area, and a non-shielding printing space is provided.

Description

3D prints bearing structure

Technical Field

The utility model relates to the field of medical instruments, in particular to a structure for supporting printing during 3D printing.

Background

The 3D printing technology is widely applied to various medical fields with the advantages of rapidness, high efficiency and the like, and provides help for rapid rehabilitation of patients. The inventor applies the 3D printing technology to bone defect repair on the basis of successfully developing biological ink and printing equipment, and brings better experience for patients.

However, in the printing process, the inventor finds that although the size of the joint cavity wound is enough to provide a printing space of the printer nozzle, the common 3D printer nozzle can face the problem that adjacent tissues at the wound invade the printing area of the printer nozzle when in-situ printing is performed, so that the printing effect is affected.

Therefore, the addition of a support structure to provide an unobstructed printing space is a necessary condition for ensuring the 3D printing quality, and is also an important prerequisite for finally solving the articular cavity cartilage defect problem.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims to provide a 3D printing support structure, which is used for solving the problem that the printing space of a printer nozzle is insufficient due to invasion of other tissues at a wound into the printing area of the printer nozzle under the condition that the size of the wound is enough to provide the printing space of the printer nozzle.

The utility model is realized by the following technical scheme:

3D prints bearing structure, including fixed cover, slip cap and the expansion rod group of setting between fixed cover and slip cap, the slip cap slides and cup joints the outside at fixed cover, expansion rod group includes first pole group, second pole group and opens and close actuating mechanism, first pole group includes a plurality of bracing pieces that are cyclic annular and articulate on the slip cap, second pole group includes the connecting rod that sets up with the bracing piece one-to-one, the one end of connecting rod is articulated with fixed cover, and the other end is articulated with the bracing piece, the other end of bracing piece articulates on the slip cap, it is fixed with the slip cap to open and close actuating mechanism, and the drive slip cap slides along fixed cover to the drive bracing piece is opened umbelliform or is drawn in to the slip cap excircle facial features in.

Furthermore, the opening and closing driving mechanisms are arranged in two groups, and the two groups of opening and closing driving mechanisms are uniformly distributed in the circumferential direction of the fixed sleeve.

Further, open and close actuating mechanism including flexible pole and traction lever, the frame and the fixed cover of flexible pole are fixed, the pole tip of flexible pole with the traction lever is articulated, the other end and the sliding sleeve of traction lever are articulated.

Further, still including dismantling the fixing base that sets up in fixed cover outside, flexible pole is fixed on the fixing base.

Furthermore, one end of the support rod, which is close to the connecting rod, is provided with an arc-shaped section which is bent inwards.

Furthermore, the supporting rod is wrapped by a silica gel layer for avoiding damaging tissues.

The utility model has the beneficial effects that:

through opening and shutting actuating mechanism drive slip cover and sliding along fixed cover, and then drive bracing piece axial displacement, make the distance between bracing piece and the connecting rod shorten, the bracing piece outwards rotates around the junction simultaneously with the connecting rod to the front end that makes the bracing piece is along radially outwards stretching out, thereby makes its outside diameter enlarge, forms umbelliform bearing structure, will print the region and protect, prevents that other organizations of wound department from invading and printing the region, provides and does not have the printing space that shelters from, creates the prerequisite for printing.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.

Drawings

FIG. 1 is a 3D diagram of the present invention;

FIG. 2 is a diagram illustrating the operation of the present invention;

reference numerals:

1-fixing a sleeve; 2-a sliding sleeve; 3-a first set of bars; 4-a second set of bars; 5-telescopic electric pole; 6, a draw bar; 7-a fixed seat; 8-arc section; 9-a silica gel layer; 10-print head.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the above description of the present invention, it should be noted that the terms "one side", "the other side" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the utility model is used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or the element which is referred to must have a specific orientation, be constructed in a specific orientation and operation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

Further, the term "identical" and the like do not mean that the components are absolutely required to be identical, but may have slight differences. The term "perpendicular" merely means that the positional relationship between the components is more perpendicular than "parallel", and does not mean that the structure must be perfectly perpendicular, but may be slightly inclined.

As shown in fig. 1-2, an embodiment of the present invention provides a 3D printing support structure, which includes a fixed sleeve 1, a sliding sleeve 2, and an expansion rod set, wherein the sliding sleeve is slidably sleeved outside the fixed sleeve, the expansion rod set includes a first rod set 3, a second rod set 4, and an opening and closing driving mechanism, the first rod set includes a plurality of support rods annularly hinged on the sliding sleeve, the second rod set includes connecting rods arranged in one-to-one correspondence with the support rods, one end of each connecting rod is hinged to the fixed sleeve, the other end of each connecting rod is hinged to the corresponding support rod, the other end of each support rod is hinged on the sliding sleeve, and the opening and closing driving mechanism is fixed to the sliding sleeve to drive the sliding sleeve to move.

As shown in fig. 2, when the device is used, the fixed sleeve is sleeved outside the printing head 10, when the opening and closing driving mechanism extends out, the sliding sleeve is driven to slide rightwards along the fixed sleeve, so as to drive the axial movement of the supporting rod, so that the distance between the supporting rod and the connecting rod is shortened, the supporting rod and the connecting rod simultaneously rotate outwards around the joint, so that the front end of the supporting rod extends outwards along the radial direction, the outer diameter of the supporting rod is enlarged, an umbrella-shaped supporting structure is formed, a printing area is protected, other tissues at a wound are prevented from invading the printing area, and a non-shielding printing space is provided;

when the opening and closing driving mechanism retracts, the supporting rod is folded towards the axis, preferably to the outer circle surface where the sliding sleeve is located, so that the supporting rod can be stored, and the supporting rod is prevented from protruding out of the operation hole to damage adjacent tissues.

The actuating mechanism that opens and shuts of this embodiment is including setting up at fixed cover outside flexible pole 5 and traction lever 6, and flexible pole is electric putter, can realize flexible drive, and tensile or return the sliding sleeve, the both ends of traction lever set up respectively on flexible pole and sliding sleeve, and through articulated, make it have certain rotational freedom degree.

In this embodiment, still include fixing base 7, this fixing base is fixed in the outside of fixed cover with screw or bolt, and the frame and the fixing base of flexible pole are fixed.

As the improvement of this embodiment, flexible pole sets up two in fixed cover outside altogether, and evenly distributed on fixed cover outside circumference, two flexible poles are the symmetry setting promptly, when drawing the sliding sleeve, traction force is more balanced, and simultaneously, be provided with the pole fixing base on the sliding sleeve, flexible pole passes through screw or bolt and can dismantle the setting on the fixing base, the flexible tip and the traction lever one end of flexible pole are articulated, the other end and the sliding sleeve of traction lever are articulated, thereby make there is certain rotatory degree of freedom between traction lever and sliding sleeve and the flexible pole.

As a modification of this embodiment, one end of the support rod close to the connecting rod is provided with an inwardly bent arc-shaped section 8. Because the end part of the elastic part is bent inwards, the end part of the elastic part protrudes to damage human tissues, and the safety is improved.

As an improvement of the embodiment, the supporting rod is wrapped by a silica gel layer 9 for avoiding damaging tissues.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims

1.3D prints bearing structure, its characterized in that: including fixed cover, slip cap and the expansion rod group of setting between fixed cover and slip cap, the slip cap slides and cup joints the outside at fixed cover, expansion rod group includes first pole group, second pole group and opens and close actuating mechanism, first pole group includes a plurality of bracing pieces that are cyclic annular and articulate on the slip cap, second pole group includes the connecting rod that sets up with the bracing piece one-to-one, the one end of connecting rod is articulated with fixed cover, and the other end is articulated with the bracing piece, the other end of bracing piece articulates on the slip cap, it is fixed with the slip cap to open and close actuating mechanism, and the drive slip cap slides along fixed cover to the drive bracing piece is opened into umbelliform or is drawn in to the slip cap excircle facial features in.

2. The 3D printing support structure of claim 1, wherein: the opening and closing driving mechanisms are arranged in two groups, and the two groups of opening and closing driving mechanisms are uniformly distributed in the circumferential direction of the fixed sleeve.

3. The 3D printing support structure of claim 2, wherein: the opening and closing driving mechanism comprises a telescopic electric pole and a traction rod, a base of the telescopic electric pole is fixed with a fixing sleeve, the end part of the electric pole of the telescopic electric pole is hinged with the traction rod, and the other end of the traction rod is hinged with a sliding sleeve.

4. The 3D printing support structure of claim 3, wherein: still including dismantling the fixing base that sets up in fixed cover outside, flexible pole is fixed on the fixing base.

5. The 3D printing support structure of claim 1, wherein: one end of the support rod, which is close to the connecting rod, is provided with an arc-shaped section which is bent inwards.

6. The 3D printing support structure of claim 1, wherein: the supporting rod is wrapped by a silica gel layer used for avoiding damaging tissues.