CN219147822U

CN219147822U - Assembled percutaneous pedicle of vertebral arch puncture ware that opens a way

Info

Publication number: CN219147822U
Application number: CN202223566645.0U
Authority: CN
Inventors: 吴春宝; 曹林虎; 桂大金
Original assignee: Chongqing Traditional Chinese Medicine Orthopaedic Hospital Chongqing Yuzhong District People's Hospital Chongqing Traditional Chinese Medicine Orthopaedic Research Institute
Current assignee: Chongqing Traditional Chinese Medicine Orthopaedic Hospital Chongqing Yuzhong District People's Hospital Chongqing Traditional Chinese Medicine Orthopaedic Research Institute
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-06-09
Anticipated expiration: 2032-12-30

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to an assembled percutaneous pedicle of vertebral arch puncture opener which comprises a guide cylinder, a grab handle, a first push rod and a second push rod, wherein a sharp cutter body is arranged at the bottom of the first push rod, a round blunt cutter body is arranged at the bottom of the second push rod, connecting blocks are fixedly arranged on the first push rod and the second push rod, a clamping groove is formed in one side of each connecting block, an installation cylinder is fixedly arranged on the guide cylinder, the grab handle is provided with a guide groove on one side of a through hole, a fixed block is fixedly arranged in the guide groove, and a clamping mechanism is slidably arranged on the fixed block. The purpose is that: through guide cylinder, connecting block, first push rod and second push rod cooperation use, use guide cylinder and first push rod to push in for the first time, change the second push rod and continue to push in, change sharp-pointed pjncture needle into blunt percutaneous open circuit ware, reduce the risk that causes pedicle of vertebral arch osseous tube wall to break, reduce the blood vessel near the damage, nerve root and the risk of dura mater sac.

Description

Assembled percutaneous pedicle of vertebral arch puncture ware that opens a way

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to an assembled percutaneous pedicle puncture open circuit device.

Background

When patients with lumbar disc herniation, thoracolumbar vertebra fracture and the like are subjected to minimally invasive surgery treatment, vertebral bodies are required to be stabilized by means of spinal connecting rods and pedicle screws, perforation and positioning are required to be performed on screw paths formed by cancellous bones and cortical bones before the pedicle screws are implanted percutaneously, and the pedicle screws are prevented from being implanted at wrong positions.

Currently, prior to percutaneous implantation of pedicle screws, the skin is typically marked and a sharp needle is used to pierce the skin at the mark.

In the process of percutaneous puncture of the vertebral pedicle, the puncture needle is very sharp, so that the fracture of the bony wall of the vertebral pedicle is easy to be caused, and the risk of damaging blood vessels, nerve roots and dura mater sacs near the puncture needle exists.

Disclosure of Invention

The purpose of the utility model is that: aims at providing an assembled percutaneous pedicle of vertebral arch puncture open circuit ware, uses through guide cylinder, connecting block, first push rod and second push rod cooperation, uses guide cylinder and first push rod to carry out the first time and pushes into, remains the guide cylinder in the opening of vertebra, changes the second push rod and continues to push into, changes sharp-pointed pjncture needle into blunt percutaneous open circuit ware, reduces the risk that causes pedicle of vertebral arch osseous wall to break, reduces the blood vessel near the damage, nerve root and the risk of dura mater sac.

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

the utility model provides an assembled percutaneous pedicle of vertebral arch puncture ware that opens a way, includes guide cylinder, grab handle, first push rod and second push rod, the bottom of first push rod is equipped with sharp-pointed cutter body, the bottom of second push rod is equipped with the round blunt cutter body, equal fixed mounting has the connecting block on first push rod and the second push rod, the joint groove has been seted up to one side of connecting block, fixed mounting has a mounting cylinder on the guide cylinder, the grab handle is dismantled with the mounting cylinder and is connected and be located the top of mounting cylinder, the through-hole has been seted up on the grab handle, the through-hole communicates with the guide cylinder through the mounting cylinder, the guide way has been seted up in one side of through-hole to the grab handle, fixed mounting fixed block in the guide way, slidable mounting has joint mechanism on the fixed block, install the pressure spring between joint mechanism and the fixed block.

Further limited, the joint mechanism includes the guide bar, guide bar slidable mounting is on the fixed block, the one end fixedly connected with deflector that the guide bar is close to the through-hole, deflector and guide slot sliding connection, be equipped with the joint piece on the deflector, the joint piece is located the joint inslot. After the connecting block is inserted into the grab handle, the clamping block is extruded, the guide plate moves towards the fixed block, the pressure spring contracts until the clamping block reaches the vicinity of the clamping groove, the clamping block is jacked into the clamping groove due to the elasticity of the pressure spring, and the connecting block cannot move up and down, so that the first push rod and the second push rod are simpler and more convenient to install.

Further limited, the one end fixed mounting who keeps away from the through-hole of guide bar has the sliding block, set up the movable groove on the sliding block, sliding block slidable mounting has the lifter, the lifter is fixed mounting in the mounting groove has the spring, fixed mounting has the shielding plate on the lifter. According to the structural design, when the device is used, the grab handle is held by one hand, the shielding plate is extruded into the guide groove and attached to the grab handle, and when the device is detached, the shielding plate is located on the outer side of the guide groove, and the clamping block can be driven to be separated from the clamping groove through moving the shielding plate, so that the device is convenient to detach.

Further limited, rectangular holes are formed in the top ends of the handles, the rectangular holes are communicated with the through holes, the connecting blocks are rectangular and located in the rectangular holes, a locating plate is arranged on one side, close to the clamping grooves, of each connecting block, and the length and/or the width of each connecting block are greater than the diameter of each through hole. Such structural design is through setting up the rectangular hole for first push rod and second push rod can't rotate in the guide cylinder, through setting up the locating plate, find the direction of insertion of accurate connecting block during easy to assemble, and be convenient for pull out the connecting block through the locating plate.

Further limited, the top symmetry of installation section of thick bamboo is provided with two elastic clamping plates, two arc draw-in grooves have been seted up to the bottom symmetry of grab handle, export the groove has been seted up in one side of arc draw-in groove to the grab handle, export groove and arc draw-in groove intercommunication, elastic clamping plate is located the arc draw-in groove. By means of the structural design, the grab handle is pressed to the mounting cylinder, the elastic clamping plate is clamped into the arc-shaped clamping groove to be fixed, the grab handle is rotated, the elastic clamping plate is moved to the guide-out groove, and the grab handle can be separated, so that the elastic clamping plate is convenient to install and detach.

Further limited, the top of the mounting cylinder is symmetrically provided with two elastic bending plates, the side wall of the grab handle is symmetrically provided with a limit groove, and the elastic bending plates are positioned in the limit groove. By means of the structural design, the limiting groove is clamped with the elastic bending plate, positioning is convenient during installation, and the grab handle cannot be separated from the mounting seat easily when the device is used.

Further defined, the grip is oval or T-shaped. The structure design is that the handles with various shapes are convenient for different operators to use.

The utility model adopting the technical scheme has the following advantages:

1. through guide cylinder, connecting block, first push rod and second push rod cooperation use, use guide cylinder and first push rod to carry out the first time and push into, remain the guide cylinder in the opening of vertebra, change the second push rod and continue to push into, change sharp-pointed pjncture needle into blunt percutaneous open circuit ware, reduce the risk that causes the fracture of pedicle of vertebral arch osseous tube wall, reduce the blood vessel near the damage, nerve root and the risk of dura mater sac.

2. Through setting up the rectangular hole for first push rod and second push rod can't rotate in the guide cylinder, through setting up the locating plate, find the direction of inserting of accurate connecting block when easy to assemble.

3. Through pressing the grab handle towards the installation section of thick bamboo, the arc draw-in groove is gone into to the elastic clamping board card, accomplishes fixedly, rotatory grab handle for the elastic clamping board removes to the export groove, separable grab handle, easy to assemble and dismantlement.

Drawings

The utility model can be further illustrated by means of non-limiting examples given in the accompanying drawings;

FIG. 1 is a schematic diagram of an embodiment of an assembled percutaneous pedicle screw opener according to the utility model;

FIG. 2 is a schematic diagram of an embodiment of an assembled percutaneous pedicle screw opener according to the utility model;

FIG. 3 is a cross-sectional view of the handle portion of one embodiment of a fabricated percutaneous pedicle puncture opener according to the utility model;

FIG. 4 is a schematic structural view of the handle portion of an embodiment of a fabricated percutaneous pedicle penetrating opener according to the utility model;

FIG. 5 is a schematic structural view of the handle portion of the mounting cartridge of an embodiment of the percutaneous pedicle screw hole opener of the utility model;

FIG. 6 is a cross-sectional view of an assembled percutaneous pedicle puncture opener embodiment of the utility model, showing the guide cylinder assembled with the first pushrod;

the main reference numerals are as follows:

a guide cylinder 1, a mounting cylinder 11, an elastic clamping plate 12, an elastic bending plate 13,

Handle 2, through hole 21, guide 22, fixed block 23, clamping mechanism 24, pressure spring 241, guide rod 242, guide plate 243, clamping block 244, sliding block 245, lifting rod 246, shielding plate 247, arc-shaped clamping groove 25, guiding-out groove 26,

A first push rod 3,

A second push rod 4,

Connecting block 5, joint groove 51, locating plate 52.

Detailed Description

The present utility model will be described in detail below with reference to the drawings and the specific embodiments, wherein like or similar parts are designated by the same reference numerals throughout the drawings or the description, and implementations not shown or described in the drawings are in a form well known to those of ordinary skill in the art. In addition, directional terms such as "upper", "lower", "top", "bottom", "left", "right", "front", "rear", etc. in the embodiments are merely directions with reference to the drawings, and are not intended to limit the scope of the present utility model.

As shown in fig. 1 to 3, the assembled percutaneous pedicle puncture opener of the utility model comprises a guide cylinder 1, a grab handle 2, a first push rod 3 and a second push rod 4, wherein the bottom of the first push rod 3 is provided with a sharp knife body, the bottom of the second push rod 4 is provided with a round blunt knife body, the first push rod 3 and the second push rod 4 are fixedly provided with a connecting block 5, one side of the connecting block 5 is provided with a clamping groove 51, the guide cylinder 1 is fixedly provided with a mounting cylinder 11, the grab handle 2 is detachably connected with the mounting cylinder 11 and is positioned above the mounting cylinder 11, the grab handle 2 is provided with a through hole 21, the through hole 21 is communicated with the guide cylinder 1 through the mounting cylinder 11, one side of the grab handle 2 on the through hole 21 is provided with a guide groove 22, the grab handle 2 is fixedly provided with a fixed block 23 in the guide groove 22, the fixed block 23 is provided with a clamping mechanism 24 in a sliding manner, a compression spring 241 is arranged between the clamping mechanism 24 and the fixed block 23, and the grab handle 2 is elliptic.

In this embodiment, the round blunt blade body is matched with the bottom of the open circuit device and has various specifications, and is adapted to different surgical environments by different shapes and lengths.

The clamping mechanism 24 comprises a guide rod 242, the guide rod 242 is slidably mounted on the fixed block 23, one end of the guide rod 242, which is close to the through hole 21, is fixedly connected with a guide plate 243, the guide plate 243 is slidably connected with the guide groove 22, the guide plate 243 is provided with a clamping block 244, and the clamping block 244 is positioned in the clamping groove 51. After the connecting block 5 is inserted into the grab handle 2, the clamping block 244 is extruded, the guide plate 243 moves towards the fixed block 23, the pressure spring 241 contracts until the clamping block 244 reaches the vicinity of the clamping groove 51, the clamping block 244 is jacked into the clamping groove 51 due to the elasticity of the pressure spring 241, and the connecting block 5 cannot move up and down, so that the first push rod 3 and the second push rod 4 are more convenient to install.

One end of the guide rod 242 far away from the through hole 21 is fixedly provided with a sliding block 245, a movable groove is formed in the sliding block 245, the sliding block 245 is slidably provided with a lifting rod 246, a spring is fixedly arranged in the mounting groove of the lifting rod 246, and a shielding plate 247 is fixedly arranged on the lifting rod 246. When the device is used, the grab handle 2 is held by one hand, the shielding plates 247 are extruded into the guide grooves 22 and are attached to the grab handle 2, and when the device is detached, the shielding plates 247 are positioned on the outer sides of the guide grooves 22, and the clamping blocks 244 can be driven to be separated from the clamping grooves 51 by moving the shielding plates 247, so that the device is convenient to detach.

The top of grab handle 2 has seted up the rectangular hole, and the rectangular hole communicates with through-hole 21, and connecting block 5 is the cuboid, and is located the rectangular hole, and connecting block 5 is close to one side of joint groove 51 and is equipped with locating plate 52. Through setting up the rectangular hole for first push rod 3 and second push rod 4 can't rotate in guide cylinder 1, through setting up locating plate 52, find the direction of insertion of connecting block 5 when easy to assemble, be convenient for pull out connecting block 5 through locating plate 52.

As shown in fig. 4 and 5, two elastic clamping plates 12 are symmetrically arranged at the top end of the mounting cylinder 11, two arc clamping grooves 25 are symmetrically arranged at the bottom of the grab handle 2, a guiding-out groove 26 is formed in one side of the arc clamping groove 25 of the grab handle 2, the guiding-out groove 26 is communicated with the arc clamping groove 25, and the elastic clamping plates 12 are located in the arc clamping groove 25. Through pressing grab handle 2 towards mounting cylinder 11, arc draw-in groove 25 is gone into to elastic clamping plate 12 card, accomplishes fixedly, rotatory grab handle 2 for elastic clamping plate 12 removes to export groove 26, separable grab handle 2, easy to assemble and dismantlement.

Two elastic bending plates 13 are symmetrically arranged at the top end of the mounting barrel 11, limit grooves are symmetrically formed in the side wall of the grab handle 2, and the elastic bending plates 13 are located in the limit grooves. Through setting up spacing groove and elasticity bent plate 13 block, the convenience is fixed a position when the installation, and when using the device, grab handle 2 can not break away from with the mount pad easily.

As shown in fig. 6, when the embodiment is used, the handle 2 is assembled with the guide cylinder 1, the elastic clamping plate 12 is aligned with the guiding groove 26, the handle 2 is pressed between the two elastic bending plates 13, then the handle is rotated, the elastic clamping plate 12 enters the arc clamping groove 25, the elastic bending plates 13 are clamped into the limiting grooves to complete the clamping, the first push rod 3 is inserted into the through hole 21, the positioning plate 52 is aligned with the guide groove 22, the connecting block 5 is pushed downwards, the clamping block 244 is extruded, the guide plate 243 moves towards the fixed block 23, the pressure spring 241 is contracted until the clamping block 244 reaches the vicinity of the clamping groove 51, the clamping block 244 is pushed into the clamping groove 51 due to the elasticity of the pressure spring 241, the connecting block 5 cannot move up and down, the fixing of the first push rod 3 is completed, the first push rod 3 is pushed into the opening through cancellous bone;

after the first pushing is finished, the shielding plate 247 is pushed to the outer side of the grab handle 2, the shielding plate 247 drives the guide rod 242 to move, the guide rod 242 drives the guide plate 243 to move along the guide groove 22, the clamping block 244 is separated from the clamping groove 51, the first push rod 3 can be pulled out by using the positioning plate 52 to finish the disassembly, the guide cylinder 1 is left in the opening, the skin incision is kept in an open state by the guide cylinder 1, the installation method of the second push rod 4 is the same as that of the first push rod 3, the second push rod 4 is combined with the guide cylinder 1, and then the second pushing is carried out, so that the operation steps are simplified, and the use of operators is facilitated.

The assembled percutaneous pedicle puncture opener provided by the utility model is described in detail. The description of the specific embodiments is only intended to aid in understanding the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims

1. An assembled percutaneous pedicle of vertebral arch puncture circuit breaker, its characterized in that: including guide cylinder (1), grab handle (2), first push rod (3) and second push rod (4), the bottom of first push rod (3) is equipped with sharp-pointed cutter body, the bottom of second push rod (4) is equipped with round blunt cutter body, equal fixed mounting has connecting block (5) on first push rod (3) and second push rod (4), joint groove (51) have been seted up to one side of connecting block (5), fixed mounting has a mounting cylinder (11) on guide cylinder (1), grab handle (2) are dismantled with mounting cylinder (11) and are connected and lie in the top of mounting cylinder (11), through-hole (21) have been seted up on grab handle (2), through-hole (21) are through mounting cylinder (11) and guide cylinder (1) intercommunication, guide slot (22) have been seted up in one side of through-hole (21), grab handle (2) are in guide slot (22) fixed mounting fixed block (23), slidable mounting has joint mechanism (24) on fixed block (23), install pressure spring between joint mechanism (241) and fixed block (23).

2. A fabricated percutaneous pedicle penetrating opener as claimed in claim 1, wherein: the clamping mechanism (24) comprises a guide rod (242), the guide rod (242) is slidably mounted on the fixed block (23), one end, close to the through hole (21), of the guide rod (242) is fixedly connected with a guide plate (243), the guide plate (243) is slidably connected with the guide groove (22), a clamping block (244) is arranged on the guide plate (243), and the clamping block (244) is located in the clamping groove (51).

3. A fabricated percutaneous pedicle penetrating opener as claimed in claim 2, wherein: one end of the guide rod (242) far away from the through hole (21) is fixedly provided with a sliding block (245), a movable groove is formed in the sliding block (245), the sliding block (245) is slidably provided with a lifting rod (246), the lifting rod (246) is fixedly provided with a spring in the mounting groove, and the lifting rod (246) is fixedly provided with a shielding plate (247).

4. A fabricated percutaneous pedicle penetrating opener as claimed in claim 1, wherein: rectangular holes are formed in the top end of the grab handle (2), the rectangular holes are communicated with the through holes (21), the connecting blocks (5) are rectangular and located in the rectangular holes, one side, close to the clamping grooves (51), of each connecting block (5) is provided with a locating plate (52), and the length and/or width of each connecting block (5) is larger than the diameter of each through hole (21).

5. A fabricated percutaneous pedicle penetrating opener as claimed in claim 1, wherein: the top symmetry of installation section of thick bamboo (11) is provided with two elastic clamping plates (12), two arc draw-in grooves (25) have been seted up to the bottom symmetry of grab handle (2), export groove (26) have been seted up in one side of arc draw-in groove (25) in grab handle (2), export groove (26) and arc draw-in groove (25) intercommunication, elastic clamping plate (12) are located arc draw-in groove (25).

6. A fabricated percutaneous pedicle penetrating opener as claimed in claim 1, wherein: two elastic bending plates (13) are symmetrically arranged at the top end of the mounting cylinder (11), limit grooves are symmetrically formed in the side wall of the grab handle (2), and the elastic bending plates (13) are located in the limit grooves.

7. A fabricated percutaneous pedicle penetrating opener as claimed in claim 1, wherein: the grab handle (2) is elliptic or T-shaped.