CN217366170U

CN217366170U - Scissors for laminectomy of rats and mice

Info

Publication number: CN217366170U
Application number: CN202221048870.2U
Authority: CN
Inventors: 谢嵘; 董浩如; 陈星宇; 丁元清; 陈功
Original assignee: Huashan Hospital of Fudan University
Current assignee: Huashan Hospital of Fudan University
Priority date: 2022-05-05
Filing date: 2022-05-05
Publication date: 2022-09-06
Anticipated expiration: 2032-05-05

Abstract

The utility model discloses a scissors is used in big mouse vertebral plate excision, including two sets of scissors bodies and connecting plate, every group scissors body all includes a scissors section of thick bamboo, layer board, shear blade, presses finger ring cover and connecting rod, has seted up the spout on the connecting plate lateral wall, and a scissors section of thick bamboo upper end sets up threaded hole, and a scissors section of thick bamboo passes through fixed establishment and connecting plate fixed connection, and layer board fixed connection is in a scissors bobbin base end, and the tip has seted up the fluting under the scissors section of thick bamboo lateral wall. The utility model discloses a set up two sets of scissors bodies, connecting plate and fixed establishment etc. can carry out the shearing of two junctions simultaneously, need not the handheld operation scissors of experimenter and successively carry out twice shearing operation, promoted the convenience of operation, reduced the operation degree of difficulty of operation to the experimenter of being convenient for need not to form the flare angle in this narrow and small space in the narrow and small space of mouse vertebral plate department simultaneously, causes the damage to near other positions of mouse vertebral plate when having avoided the operation.

Description

Scissors for laminectomy of rats and mice

Technical Field

The utility model relates to a biological assay equipment technical field especially relates to a scissors is used in big mouse vertebral plate excision.

Background

The vertebral plate is a bone plate which is connected between an upper joint process and a lower joint process of a vertebra, a transverse process and a spinous process, and in a biological experiment, a posterior vertebral plate resection operation of the cervical vertebra is often performed on a raised experimental mouse, so that the technology can be better applied to human medicine.

Posterior laminectomy is an operation to relieve spinal cord compression caused by spinal stenosis, which is a spinal stenosis symptom in which spinal stenosis, which is a spinal stenosis that can compress the spinal cord and peripheral nerve roots, may be caused by cervical degeneration or other degeneration of the neck, and thus it is necessary to timely remove the lamina to treat the disease.

Carry out the laminectomy to the mouse at present when going on, generally adopt conventional operation scissors to excise the vertebral plate, there is certain drawback in this kind of operation scissors when using, at first the vertebral plate includes two nearly parallel junctions with other positions, consequently need the handheld operation scissors of experimenter to carry out the operation of twice shearing when cutting off, it is comparatively troublesome loaded down with trivial details, secondly, the mouse is different from the human body, its spinal cord and vertebral plate size are minimum, operational space is less during the operation, conventional operation scissors need open certain angle and cut again in mouse vertebral plate department when using, cause the damage to other positions near the mouse vertebral plate easily, it is very inconvenient to use. Therefore, it is necessary to provide a pair of scissors for laminectomy of rats and mice to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a pair of scissors for laminectomy of rats and mice.

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

the utility model provides a scissors is used in size mouse vertebral plate excision, includes two sets of scissors bodies and connecting plate, every group the scissors body all includes a scissors section of thick bamboo, layer board, shear blade, presses finger ring cover and connecting rod, the spout has been seted up on the connecting plate lateral wall, a scissors section of thick bamboo upper end set up threaded hole, a scissors section of thick bamboo passes through fixed establishment and connecting plate fixed connection, layer board fixed connection is in scissors bobbin base end, the fluting has been seted up to the tip under the scissors section of thick bamboo lateral wall, shear blade sliding connection just the tip extends to a scissors section of thick bamboo in the fluting, press the ring cover and set up in a scissors section of thick bamboo top, connecting rod one end with press ring cover fixed connection, the connecting rod other end is located the partial fixed connection of a scissors section of thick bamboo with the shear blade, the canceling release mechanical system that is used for promoting the shear blade to reset is installed to the bottom in a scissors section of thick bamboo.

Preferably, the fixing mechanism comprises an adjusting bolt which penetrates through the sliding groove and is in threaded connection in the threaded hole.

Preferably, the return mechanism comprises a return spring which is elastically connected between the bottom in the scissor barrel and the part of the scissor blade located in the scissor barrel.

Preferably, the connecting rod penetrates through the upper end wall body of the scissors cylinder and is in sliding connection with the upper end wall body of the scissors cylinder.

The utility model discloses following beneficial effect has:

1. by arranging the two groups of shear bodies, the connecting plate and the fixing mechanism, the distance between the two groups of shear bodies can be adjusted by utilizing the tightness of the adjusting bolt, so that the two shear blades are respectively positioned at two joints of the vertebral plate, and the joints can be simultaneously sheared by pressing and pressing the ring sleeve, so that an experimenter does not need to hold the surgical scissors to successively perform twice shearing operations, the convenience of the operation is improved, and the operation difficulty of the operation is reduced;

2. through setting up planker, shear blade, connecting rod and canceling release mechanical system, at first shear blade and the size of planker all far are less than conventional operation scissors, the operation of the experimenter in the narrow and small space of mouse vertebral plate department of being convenient for to when shearing the vertebral plate, only need to make the vertebral plate be in the position between shear blade and the planker, utilize to press ring cover and the vertical promotion shear blade of connecting rod and can accomplish the operation, need not to form in this narrow and small space and open the angle, cause the damage to near other positions of mouse vertebral plate when having avoided the operation.

Drawings

FIG. 1 is a schematic structural view of a pair of scissors for laminectomy of rats and mice according to the present invention;

fig. 2 is a schematic structural view of the scissors body according to the present invention;

fig. 3 is a cross-sectional view of the scissors body according to the present invention.

In the figure: 1. a scissor cylinder; 2. a connecting plate; 3. a chute; 4. adjusting the bolt; 5. grooving; 6. a support plate; 7. a scissor blade; 8. pressing the finger ring sleeve; 9. a connecting rod; 10. a threaded hole; 11. a return spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-3, the scissors for laminectomy of rats and mice comprise two groups of scissors bodies and a connecting plate 2, wherein each group of scissors body comprises a scissors cylinder 1, a supporting plate 6, a scissors blade 7, a pressing finger ring sleeve 8 and a connecting rod 9, and a sliding groove 3 is formed in the side wall of the connecting plate 2.

Threaded hole 10 is seted up to 1 upper end of a scissors section of thick bamboo, and a scissors section of thick bamboo 1 passes through fixed establishment and connecting plate 2 fixed connection, and fixed establishment includes adjusting bolt 4, and adjusting bolt 4 passes spout 3 and threaded connection in threaded hole 10.

Layer board 6 fixed connection is in 1 bottom of a scissors section of thick bamboo, fluting 5 has been seted up to 1 lateral wall lower tip of a scissors section of thick bamboo, shear blade 7 sliding connection in fluting 5 and tip extend to a scissors section of thick bamboo 1, press ring cover 8 to set up in 1 top of a scissors section of thick bamboo, connecting rod 9 one end with press ring cover 8 fixed connection, the connecting rod 9 other end is located the part fixed connection of 1 interior with shear blade 7, connecting rod 9 runs through 1 upper end wall body setting of a scissors section of thick bamboo, and connecting

rod

9 and 1 upper end wall body sliding connection of a scissors section of thick bamboo.

The bottom is installed in scissors section of thick bamboo 1 and is used for promoting the canceling release mechanical system that scissors piece 7 resets, and canceling release mechanical system includes reset spring 11, and reset spring 11 elastic connection is between the part that bottom and scissors piece 7 are located scissors section of thick bamboo 1 in scissors section of thick bamboo 1.

It should be noted that the size of the scissors blade 7 and the supporting plate 6 is much smaller than that of the conventional surgical scissors, so that the operation of experimenters in a narrow space at the mouse vertebral plate can be facilitated, and the laminectomy can be favorably carried out.

The utility model discloses in, when needs carry out the laminectomy operation to the mouse, a neck incision is done along the central line to present mouse neck, then loosens two adjusting bolt 4, adjusts two shear body positions on connecting plate 2 according to the concrete position of mouse vertebral plate two junctions for two shear blade 7 are corresponding with vertebral plate two junctions respectively, screws up two adjusting bolt 4 again, makes two shear body and connecting plate 2 fixed.

Then, the two groups of scissors bodies are operated, so that the mouse vertebral plate is positioned between the scissors blades 7 and the supporting plate 6 of the two groups of scissors bodies, at the moment, an experimenter can press the pressing finger ring sleeve 8, the pressing finger ring sleeve 8 pushes the scissors blades 7 to move downwards through the connecting action of the connecting rod 9, and the two joints of the mouse vertebral plate are cut.

After the cut is finished, the excised vertebral plate is taken out, then the pressing finger ring sleeve 8 is loosened, the scissors blade 7 is reset under the elastic force action of the reset spring 11, at the moment, the two groups of scissors bodies are taken out from the vertebral plate of the mouse, and finally the operation is finished by suturing the wound.

The above, only be the embodiment of the preferred of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, which are designed to be replaced or changed equally, all should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a scissors for laminectomy of big mouse and small mouse, includes two sets of scissors bodies and connecting plate (2), its characterized in that, every group the scissors body all includes a scissors section of thick bamboo (1), layer board (6), shear blade (7), presses ring cover (8) and connecting rod (9), seted up spout (3) on the connecting plate (2) lateral wall, a screw hole (10) has been seted up to scissors section of thick bamboo (1) upper end, a scissors section of thick bamboo (1) passes through fixed establishment and connecting plate (2) fixed connection, layer board (6) fixed connection is in a scissors section of thick bamboo (1) bottom, a fluting (5) has been seted up to scissors section of thick bamboo (1) lateral wall lower tip, shear blade (7) sliding connection in fluting (5) and tip extend to scissors section of thick bamboo (1), press ring cover (8) to set up in scissors section of thick bamboo (1) top, connecting rod (9) one end with according to press ring cover (8) fixed connection, the other end of the connecting rod (9) is fixedly connected with the part of the shear blade (7) located in the shear cylinder (1), and a reset mechanism used for pushing the shear blade (7) to reset is installed at the bottom in the shear cylinder (1).

2. The pair of shears for laminectomy according to claim 1, wherein the fixing mechanism comprises an adjusting bolt (4), and the adjusting bolt (4) passes through the sliding slot (3) and is screwed in the threaded hole (10).

3. The pair of shears of claim 1, wherein the return mechanism comprises a return spring (11), and the return spring (11) is elastically connected between the bottom of the shear cylinder (1) and the portion of the shear blade (7) located in the shear cylinder (1).

4. The pair of scissors for laminectomy of rats and mice as claimed in claim 1, wherein the connecting rod (9) is disposed through the upper end wall of the scissors cylinder (1), and the connecting rod (9) is slidably connected with the upper end wall of the scissors cylinder (1).