CN113598845A

CN113598845A - Minimally invasive vertebral body opening and mold testing instrument

Info

Publication number: CN113598845A
Application number: CN202110821293.XA
Authority: CN
Inventors: 姚益奇; 陈刘斌; 姚柏艇; 卓清山; 张鹏云
Original assignee: NINGBO HICREN BIOTECHNOLOGY CO LTD
Current assignee: NINGBO HICREN BIOTECHNOLOGY CO LTD
Priority date: 2021-07-20
Filing date: 2021-07-20
Publication date: 2021-11-05
Anticipated expiration: 2041-07-20
Also published as: CN113598845B

Abstract

The invention discloses a minimally invasive centrum expandable model testing instrument, which relates to the technical field of medical instruments and comprises a handle assembly and a far-end expanding mechanism, wherein one end of the handle assembly is connected with the far-end expanding mechanism, the far-end expanding mechanism comprises an expanding sheet, a support column mechanism arranged in the expanding sheet, a sliding seat arranged at one end of the expanding sheet and a fixed seat arranged at the other end of the expanding sheet, two ends of the support column mechanism are rotatably connected with the fixed seat and the sliding seat, and the support column mechanism is used for controlling the expanding sheet to be expanded along the diagonal direction or the two side directions. The minimally invasive centrum in this application can strut examination mould apparatus accessible wicresoft passageway, and the resistance that has littleer when strutting, and difficult quilt tissue piece blocks up, and this scheme can measure the degree of depth that inserts the centrum and strut the height of centrum, can guide the implantation of follow-up wicresoft fusion ware, has higher clinical value.

Description

Minimally invasive vertebral body opening and mold testing instrument

Technical Field

The invention relates to the technical field of medical instruments, in particular to a minimally invasive centrum expandable model testing instrument.

Background

Conventional centrum spreader is scissors formula, all carries out under the full open operation, need open a wound that is not less than 30mm at the human body surface, and the wound itself is just very big, causes secondary damage to the patient, and the operation recovery time is very long, and the wound exposes under the operation field of vision completely, causes the operation to infect easily.

Disclosure of Invention

The invention aims to provide a minimally invasive vertebral body expandable model testing instrument, which is used for solving the technical problem.

The technical scheme adopted by the invention is as follows:

the minimally invasive vertebral body strutting trial instrument comprises a handle assembly and a far-end strutting mechanism, wherein one end of the handle assembly is connected with the far-end strutting mechanism, the far-end strutting mechanism comprises a strutting piece and a supporting column mechanism arranged in the strutting piece, and a sliding seat arranged at one end of the strutting piece and a fixed seat arranged at the other end of the strutting piece, wherein two ends of the supporting column mechanism are rotatably connected with the fixed seat and the sliding seat, and the supporting column mechanism is used for controlling the strutting piece to be propped open along the diagonal direction or the two sides.

Preferably, the handle assembly comprises:

a handle;

the rotating handle is rotatably connected with one end of the handle;

the cap is arranged at one end of the rotating handle, which is far away from the handle, and the inside of the cap, the inside of the rotating handle and the inside of one end of the handle are sequentially communicated to form an inner cavity;

one end of the transmission pipe penetrates through the cover cap and extends into the inner cavity, and the other end of the transmission pipe is connected with the sliding seat;

the fixed shaft is arranged inside the transmission pipe, one end of the fixed shaft is connected with the handle, and the other end of the fixed shaft penetrates through the sliding seat and is connected with the fixed seat;

the slider, the one end outer fringe of transmission pipe is equipped with the slider, the inside spout that is equipped with of one end of handle, just the slider can locate with sliding in the spout.

As a further preferred option, the handle assembly further comprises an outer tube, the outer tube is sleeved outside the transmission tube, wherein one end of the outer tube is connected with the cap, and a gap is formed between the other end of the outer tube and the sliding seat.

As a further optimization, the outer tube further comprises a supporting sheet, the supporting sheet is arranged on the outer edge of the transmission tube, and the outer edge of the supporting sheet is abutted against the inner peripheral wall of the outer tube.

Preferably, the opening sheet comprises a long cylindrical shell and fixing blocks arranged on the inner side wall of the shell, wherein the radial section of the shell is rectangular, and the two fixing blocks are arranged on the inner side wall of the shell and form a diagonal relationship.

As a further preference, the fixed seat and the sliding seat are both arranged on the inner side of the shell.

As a further preferred, the support column mechanism includes two support column assemblies symmetrically arranged, each of the support column assemblies includes:

one end of the first support column is rotatably connected with the fixed seat, and the other end of the first support column is provided with a first tooth structure;

one end of the second supporting column is rotatably connected with the sliding seat, the other end of the second supporting column is provided with a second tooth structure, and the first tooth structure is meshed with the second tooth structure;

and the first tooth part structure and the second tooth part structure are respectively connected with the fixed block through the rotating shaft.

Preferably, the strutting piece comprises two supporting plates and fixing blocks, the two supporting plates are symmetrically arranged, the fixing blocks are arranged on the two supporting plates, and the fixing seat and the sliding seat are arranged between the two supporting plates.

Preferably, the support device further comprises a support shaft, wherein the support shaft is arranged between the two support plates, and one end of the support shaft is integrally connected with the fixed seat.

As a further preference, the supporting column mechanism comprises two supporting column assemblies, and each supporting column assembly is respectively positioned between one supporting plate and the supporting shaft;

each of the strut assemblies includes:

and the first tooth part structure and the second tooth part structure are respectively connected with the fixed block through a plurality of rotating shafts.

The technical scheme has the following advantages or beneficial effects:

in the invention, only a 10mm wound needs to be cut on the body surface of a patient, and a minimally invasive operation is carried out under the fixation of the visual field of an endoscope under a minimally invasive channel with the length of 200mm and the inner diameter of 7 mm; carrying out vertebral body expansion under minimally invasive conditions, and measuring the depth of the inserted vertebral body and the height of the expanded vertebral body while expanding the vertebral body so as to guide the implantation of a subsequent minimally invasive fusion device; meanwhile, the minimally invasive centrum strutting trial instrument has smaller resistance when being used for strutting and is not easy to be blocked by tissue debris, and the scheme can measure the depth of inserting the centrum and the height of strutting the centrum, can guide the implantation of a subsequent minimally invasive fusion device and has higher clinical value.

Drawings

FIG. 1 is a schematic structural view of a minimally invasive vertebral body expandable trial instrument according to the invention;

FIG. 2 is a partial schematic structural view of the handle assembly of the present invention;

FIG. 3 is a schematic view of the handle and slider configuration of the present invention;

FIG. 4 is a schematic view of a stent according to one embodiment;

FIG. 5 is a schematic diagram of a structure of a support post mechanism engaged with a spreader plate according to an embodiment;

FIG. 6 is a schematic view showing the structure of the supporting post mechanism in cooperation with the opening piece in the second embodiment;

FIG. 7 is a schematic view showing the structure of the second embodiment in which the supporting shaft is engaged with the opening pieces;

fig. 8 is a schematic structural view of a first support column in the second embodiment.

In the figure: 1. a spreader sheet; 101. a housing; 102. a support plate; 103. a fixed block; 2. a support post mechanism; 201. a first support column; 202. a second support column; 203. a first tooth structure; 204. a second tooth structure; 3. a sliding seat; 4. a fixed seat; 5. a handle; 6. a handle is rotated; 7. capping; 8. an inner cavity; 9. a drive tube; 10. a fixed shaft; 11. a slider; 12. a chute; 13. an outer tube; 14. a support sheet; 15. and supporting the shaft.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.

In the description of the present invention, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, their indicated orientations or positional relationships are based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

FIG. 1 is a schematic structural view of a minimally invasive vertebral body expandable trial instrument according to the invention; FIG. 2 is a partial schematic structural view of the handle assembly of the present invention; FIG. 3 is a schematic view of the handle and slider configuration of the present invention; FIG. 4 is a schematic view of a stent according to one embodiment; FIG. 5 is a schematic diagram of a structure of a support post mechanism engaged with a spreader plate according to an embodiment; FIG. 6 is a schematic view showing the structure of the supporting post mechanism in cooperation with the opening piece in the second embodiment; FIG. 7 is a schematic view showing the structure of the second embodiment in which the supporting shaft is engaged with the opening pieces; fig. 8 is a schematic structural diagram of a first support column in the second embodiment, please refer to fig. 1 to 8, which illustrate two preferred embodiments.

Example one

The utility model provides a minimal access centrum can strut examination mould apparatus, including handle components and distal end distraction mechanism, handle components's one end and distal end distraction mechanism are connected, wherein, distal end distraction mechanism is including strutting piece 1 and locating the support column mechanism 2 in the piece 1 of strutting, and locate the sliding seat 3 of 1 one end of piece of strutting and locate the fixing base 4 of the 1 other end of piece of strutting, wherein, the both ends and fixing base 4 and the sliding seat 3 of support column mechanism 2 rotationally are connected, support column mechanism 2 is used for controlling to strut piece 1 and struts along diagonal direction or both sides direction. In this embodiment, the fixing seat 4 is fixedly connected to the opening sheet 1, and the sliding seat 3 is slidably connected to the opening sheet 1. The supporting column mechanism 2 is arranged in the opening sheet 1 and used for controlling the opening sheet 1 to open along the diagonal direction or the up-down direction of the supporting column mechanism. The supporting column mechanism 2 can also control the combination of the opening pieces 1 in the diagonal direction or up-down direction of itself. In this embodiment, the handle assembly is used to control the support post mechanism 2. In this embodiment, the handle assembly controls the sliding seat 3 to slide, so that the sliding seat 3 drives the supporting column mechanism 2, and then the supporting column mechanism 2 drives the opening sheet 1 to open or close.

Further, as a preferred embodiment, the handle assembly comprises:

a handle 5;

the rotating handle 6 is rotatably connected with one end of the handle 5;

the cap 7 is arranged at one end of the rotating handle 6, which is far away from the handle 5, and the inner part of the cap 7, the inner part of the rotating handle 6 and the inner part of one end of the handle 5 are communicated in sequence to form an inner cavity 8;

one end of the transmission pipe 9 penetrates through the cover cap 7 and extends into the inner cavity 8, and the other end of the transmission pipe 9 is connected with the sliding seat 3;

the fixed shaft 10 is arranged inside the transmission pipe 9, one end of the fixed shaft 10 is connected with the handle 5, and the other end of the fixed shaft 10 penetrates through the sliding seat 3 and is connected with the fixed seat 4;

the slider 11 is arranged on the outer edge of one end of the transmission tube 9, the sliding groove 12 is arranged in one end of the handle 5, and the slider 11 can be slidably arranged in the sliding groove 12. In this embodiment, the rotating handle 6 is connected to the handle 5 through a screw, when the rotating handle 6 is rotated, the rotating handle 6 and the cap 7 drive the slider 11 to move forward or backward along the matching screw, and when the cap 7 drive the transmission tube 9 to move forward or backward, the transmission tube 9 drives the sliding seat 3 to slide. In this embodiment, when the transmission tube 9 drives the sliding seat 3 to move, the sliding seat 3 drives the supporting column mechanism 2 to open or close the opening sheet 1, and the fixing shaft 10 is used for supporting the fixing seat 4 to prevent the fixing seat 4 from moving. The slide block is limited in the slide groove 12, and the rotation movement of the slide block 11 is limited, so that the slide block 11 only can move forwards and backwards.

Further, as a preferred embodiment, the handle assembly further includes an outer tube 13, the outer tube 13 is sleeved on the outer side of the transmission tube 9, wherein one end of the outer tube 13 is connected with the cap 7, and a gap is provided between the other end of the outer tube 13 and the sliding seat 3.

Further, as a preferred embodiment, the device further comprises a support plate 14, the support plate 14 is arranged at the outer edge of the transmission tube 9, and the outer edge of the support plate 14 abuts against the inner peripheral wall of the outer tube 13. In this embodiment, as shown in fig. 2, the driving tube 9 and the outer tube 13 are fixed by a supporting piece 14, and the supporting piece 14 is used for supporting the driving tube 9, so that the driving tube 9 maintains straightness.

Further, as a preferred embodiment, the spreading sheet 1 includes a casing 101 having a long cylindrical shape and fixing blocks 103 disposed on the inner side wall of the casing 101, wherein the radial cross section of the casing 101 is rectangular, and the two fixing blocks 103 are disposed on the inner side wall of the casing 101 in a diagonal relationship. In this embodiment, the outer sidewall of the support line is marked with various shapes such as small holes or sharp corners, which are used to measure the depth of the support line inserted into the vertebral body. As shown in fig. 4, the opening sheet 1 in this embodiment is marked with a pointed structure, and the pointed structure is not disposed to protrude from the opening sheet 1, but disposed to be recessed. In this embodiment, the specific shape of the distraction sheet 1 can be seen in fig. 4. In this embodiment, the outer tube 13 is also provided with a mark for measuring the sliding distance between the stem 6 and the cap 7, thereby measuring the distraction height of the distal distraction mechanism. With the depth and height measurements, the internal dimensions can be re-confirmed intra-operatively to guide subsequent fusion device sizing. The spreading sheet 1 in this embodiment is mainly used for diagonal spreading. The housing 101 in this embodiment is composed of four support plates 102, and the long sides of two adjacent support plates 102 are connected to each other, and the two adjacent support plates 102 can be folded.

Further, as a preferred embodiment, the fixed seat 4 and the sliding seat 3 are both disposed inside the housing 101.

Further, as a preferred embodiment, the supporting column mechanism 2 includes two supporting column assemblies symmetrically disposed, and each supporting column assembly includes:

one end of the first support column 201 is rotatably connected with the fixed seat 4, and the other end of the first support column 201 is provided with a first tooth structure 203;

one end of the second support column 202 is rotatably connected with the sliding seat 3, the other end of the second support column 202 is provided with a second tooth structure 204, and the first tooth structure 203 is meshed with the second tooth structure 204;

the rotating shafts, the first tooth structure 203 and the second tooth structure 204 are respectively connected with the fixed block 103 through a rotating shaft. In this embodiment, as shown in fig. 5, one end of the first supporting column 201 is hinged to the fixing base 4, one end of the second supporting column 202 is hinged to the sliding base 3, and the first supporting column 201 and the second supporting column 202 are driven to be opened or closed by the sliding of the sliding base 3, so as to open or close the opening piece 1. The first support column 201 and the second support column 202 are matched through a tooth structure, so that the opening heights of the first support column 201 and the second support column 202 are kept synchronous all the time.

Example two

The second embodiment also comprises the handle assembly in the first embodiment, and the main difference between the second embodiment and the first embodiment is the structures of the opening sheet 1, the supporting column mechanism 2 and the fixed seat 4.

In this embodiment, the spreading sheet 1 includes two supporting plates 102 symmetrically disposed and fixing blocks 103 disposed on the two supporting plates 102, wherein the fixing base 4 and the sliding base 3 are disposed between the two supporting plates 102. The supporting plate 102 in this embodiment is mainly used for being opened up and down, as shown in fig. 6, a mark is arranged on the supporting plate 102, and the mark is a plurality of round holes, and the round holes are arranged along the length direction of the supporting plate 102.

Further, as a preferred embodiment, a supporting shaft 15 is further included, the supporting shaft 15 is disposed between the two supporting plates 102, and one end of the supporting shaft 15 is integrally connected with the fixing base 4. In this embodiment, as shown in fig. 7, the other end of the supporting shaft 15 is connected to the fixed shaft 10, wherein the end of the fixed seat 4 away from the supporting shaft 15 is provided with a taper to guide insertion in clinical practice.

Further, as a preferred embodiment, the supporting column mechanism 2 includes two supporting column assemblies, each supporting column assembly is respectively located between a supporting plate 102 and the supporting shaft 15;

each strut assembly includes:

the rotating shafts, the first tooth structure 203 and the second tooth structure 204 are respectively connected with the fixing block 103 through a plurality of rotating shafts. In this embodiment, as shown in fig. 8, the first supporting column 201 and the second supporting column 202 are both in an "H" shape, which can increase the overall strength of the supporting column assembly. The other end of the first supporting column 201 is provided with two first tooth structures 203, the other end of the second supporting column 202 is provided with two second tooth structures 204, the first supporting column 201 is hinged with the fixed seat 4, and the second supporting column 202 is hinged with the sliding seat 3. The first supporting column 201 and the second supporting column 202 are arranged in a matching manner through the first tooth structure 203 and the second tooth structure 204, so that the supporting heights of the first supporting column 201 and the second supporting column 202 are always kept consistent.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.

Claims

1. The minimally invasive vertebral body opening test model instrument is characterized by comprising a handle assembly and a far-end opening mechanism, wherein one end of the handle assembly is connected with the far-end opening mechanism, the far-end opening mechanism comprises an opening sheet, a support column mechanism arranged in the opening sheet, a sliding seat arranged at one end of the opening sheet and a fixing seat arranged at the other end of the opening sheet, the two ends of the support column mechanism are rotatably connected with the fixing seat and the sliding seat, and the support column mechanism is used for controlling the opening sheet to be opened along the diagonal direction or the two side directions.

2. The minimally invasive vertebral body distractible trial instrument of claim 1, wherein the handle assembly comprises:

a handle;

the rotating handle is rotatably connected with one end of the handle;

3. The minimally invasive vertebral body expandable trial instrument as claimed in claim 2, wherein the handle assembly further comprises an outer tube, the outer tube is sleeved outside the transmission tube, wherein one end of the outer tube is connected with the cap, and a gap is provided between the other end of the outer tube and the sliding seat.

4. The minimally invasive vertebral body expandable trial instrument as claimed in claim 3, further comprising a support plate, wherein the support plate is arranged at the outer edge of the transmission tube, and the outer edge of the support plate abuts against the inner peripheral wall of the outer tube.

5. The minimally invasive vertebral body expandable trial instrument as claimed in claim 1, wherein the expansion piece comprises a long cylindrical housing and fixing blocks arranged on the inner side wall of the housing, wherein the radial section of the housing is rectangular, and the two fixing blocks are arranged on the inner side wall of the housing and form a diagonal relationship.

6. The minimally invasive vertebral body distractible trial instrument of claim 5, wherein the fixed seat and the sliding seat are both disposed inside the housing.

7. The minimally invasive vertebral body distractible trial instrument of claim 5, wherein the support post mechanism comprises two support post assemblies arranged symmetrically, each support post assembly comprising:

8. The minimally invasive vertebral body expandable trial instrument as claimed in claim 1, wherein the expansion sheet comprises two support plates symmetrically arranged and fixed blocks arranged on the two support plates, wherein the fixed seat and the sliding seat are arranged between the two support plates.

9. The minimally invasive vertebral body expandable trial instrument as claimed in claim 8, further comprising a support shaft, wherein the support shaft is disposed between the two support plates, and one end of the support shaft is integrally connected with the fixing seat.

10. The minimally invasive vertebral body distractible trial instrument of claim 9, wherein the support post mechanism includes two support post assemblies, each support post assembly being positioned between a respective support plate and the support shaft;

each of the strut assemblies includes: