CN218979245U

CN218979245U - Stepped inclined plane half-tooth fixer

Info

Publication number: CN218979245U
Application number: CN202222258012.7U
Authority: CN
Inventors: 闫明; 游勤光
Original assignee: Maoyu Qingdao Medical Technology Co ltd
Current assignee: Maoyu Qingdao Medical Technology Co ltd
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2023-05-09
Anticipated expiration: 2032-08-26
Also published as: DE202023102725U1

Abstract

The stepped bevel half-tooth fixator provided by the utility model provides a series of special fixing instruments for developing a decompression operation on a spinal side road, so that the stepped bevel half-tooth fixator is widely applicable to operation treatment of a peripheral region of a nerve dura mater sac under a direct vision condition, so as to realize various treatment means in the whole process of endoscopic operation, improve the universality and the operation convenience of the instruments, obviously reduce the operation risk, effectively reduce the stimulation on nerves and dura mater in a vertebral canal and reduce the pain of patients. The step inclined plane half-tooth fixer comprises a fixing device fixedly connected to the operating table, a free arm connected with the fixing device and a fixer sleeve; the fixer sleeve comprises a handle and an outer tube which are connected with each other, and a working end is arranged at the front end of the outer tube; the working end is provided with at least one observation window, and the opening direction of the observation window comprises forward and upward; the top end of the observation window is provided with a plurality of fixed teeth, two sides of the working end are symmetrically provided with step inclined planes, and the front end of the working end is provided with a pointed head.

Description

Stepped inclined plane half-tooth fixer

Technical Field

The utility model relates to a stepped bevel half-tooth fixer applied to a spine side way for performing decompression operation, and belongs to the field of medical appliances.

Background

In the background of the aggravated aging of the population, the incidence rate of spinal diseases such as hyperosteogeny, yellow ligament hypertrophy, herniated disc, high loss of intervertebral disc, lumbar spondylolisthesis and the like is greatly increased.

At present, along with the rapid development of the endoscope TESSYS technology, the development of spinal surgery indication treatment by means of an endoscope is further popularized and applied. The core of the technology is that in the area of the intervertebral foramen, the intervertebral foramen is enlarged and formed based on guide rod guidance and using a reamer, so that the intervertebral foramen can pass through a working cannula and an endoscope in the cannula. Then, under direct view of the endoscope, the nucleus pulposus or the like pressing the neurodura tissue is removed to relieve the disorder.

In the prior art, the technical learning curve is long and steep, a doctor can conduct operation only through C-arm perspective guidance during operation, medical care and patients can be irradiated by a large amount of X rays, operation is dangerous and complicated, pain of the patients is serious, and experience is poor.

This patent application is specifically filed by reference thereto.

Disclosure of Invention

The stepped bevel half-tooth fixator aims to solve the problems in the prior art and provides a series of special fixing instruments for performing decompression surgery on a lateral spinal canal, so that the stepped bevel half-tooth fixator is widely applicable to surgical treatment of peripheral areas of nerve dura mater bags under a direct vision condition, multiple treatment means of the whole spinal endoscope surgery are realized, the universality and the operation convenience of the instruments are improved, the surgical learning curve is obviously reduced, the surgical risk is obviously reduced, and the stimulation to nerves and dura mater in a spinal canal and the pain of patients are effectively reduced.

In order to achieve the above design purpose, the step bevel half-tooth fixer comprises a fixing device fixedly connected with an operating table, a free arm connected with the fixing device and a fixer sleeve; the fixer sleeve comprises a handle and an outer tube which are connected with each other, and a working end is arranged at the front end of the outer tube; the working end is provided with at least one observation window, and the opening direction of the observation window comprises forward and upward; the top end of the observation window is provided with a plurality of fixed teeth, two sides of the working end are symmetrically provided with step inclined planes, and the front end of the working end is provided with a pointed head.

Further, the fixed teeth are straight teeth type or inclined teeth type saw teeth.

Further, the whole handle is annular structure and has the implantation hole that allows backbone endoscope to pass through, and one side outer fringe of handle is provided with the plectrum, and the plectrum is processed into integrated structure through stamping forming with the handle body.

Further, the outer tube is provided with a cylindrical cavity tube structure with a closed outer part, the outer tube is provided with a hollow cavity for accommodating the through length of the endoscope body of the spinal endoscope, and the implantation hole of the handle is communicated with the hollow cavity of the outer tube.

Further, the bottom of the free arm is provided with a lock catch connected with the fixing device, and the top end of the free arm is provided with a fork head used for supporting the fixer sleeve.

In summary, the stepped bevel half-tooth holder has the following advantages:

1. the stepped inclined plane half-tooth fixer provided by the application realizes disposable articular process forming treatment on the premise of combined use of the endoscope, solves the problems of fixation and visualization of the working end of the surgical instrument, effectively improves the efficiency and the safety of the endoscopic surgery, and reduces the learning curve of doctors.

2. The fixing device and the endoscope are combined, so that various side-road fusion operations can be completed pertinently, and the whole device has the characteristics of reasonable structure, convenience in use, low manufacturing cost and high operation efficiency.

3. Under the combined use of the fixator, the steps of the spine lateral approach decompression operation are obviously reduced, the operation time is effectively shortened, and the pain of patients is relieved.

4. The combined use of the fixator can directly cut off bone tissues at one time under the protection of the inclined plane of the working end, accordingly reduces harassment and even damage to nerves in the intervertebral foramen, and increases the safety of operation.

5. By the application of the method, the frequency of tissue which frequently stretches into the vertebral canal and stimulates the posterior longitudinal ligament and other nerves and is rich in nerves can be effectively reduced, and pain of patients in operation is relieved.

6. By the application of the method and the device, a doctor can conveniently perform secondary molding, the fault tolerance rate of the operation is improved, and the indication of the minimally invasive spine operation is increased.

Drawings

The design of the present application will now be further described in connection with the following figures.

FIGS. 1-1 to 1-3 are schematic views of one-to-three-stage expansions of an endoscopic fusion TESSYS technical procedure, respectively;

FIG. 2 is a schematic view of a human spinal vertebral body;

FIG. 3 is a schematic view of a fastener sleeve of a stepped bevel half-tooth fastener according to the present application;

FIG. 4 is a schematic illustration of fixation at the articular process using the present application;

FIG. 5 is a partial schematic view of a combined use of a trephine for performing surgery at the articular process;

FIG. 6 is a schematic overall operation of the combined use of a fastener sleeve and a free arm;

FIG. 7 is a schematic diagram of the operation of the present application in combination with a trepan and endoscope;

fig. 8 is a schematic view of further surgical procedures using forceps after arthroplasty based on fig. 7.

Detailed Description

Additional advantages and features of the present application can be derived from the following description, in which embodiments are set forth in detail with reference to the figures.

Embodiment 1 as shown in fig. 1 to 8, the present application provides a stepped bevel half-tooth fixator applied to a spinal bypass for decompression surgery, the fixator including a fixator 50 fixedly connected to an operating table 100, and a free arm 40 connected to the fixator 50, and a fixator sleeve.

The fixer sleeve comprises a handle 1 and an outer tube 2 which are connected with each other, and a working end 3 is arranged at the front end of the outer tube 2;

the handle 1 is of an annular structure as a whole, with an implantation hole for allowing the passage of a spinal endoscope;

the outer tube 2 is of a cylindrical cavity tube structure with the outside closed, the outer tube 2 is provided with a hollow cavity for accommodating the through length of the endoscope body of the spinal endoscope, and the implantation hole of the handle 1 is communicated with the hollow cavity of the outer tube 2;

the working end 3 has at least one observation window 33, and the opening direction of the observation window 33 includes forward and upward;

the handle 1 is provided with a shifting block 11 at the outer edge of at least one side of the handle 1, and the shifting block 11 and the handle 1 body are processed into an integrated structure through stamping forming. By pulling the pulling block 11 by hand, the handle 1 can be conveniently rotated, and the outer tube 2 is driven to integrally rotate by the handle 1, so that the direction and angle of the observation window 33 of the working end 3 can be changed.

A plurality of fixed teeth 32 are arranged at the top end of the observation window 33, and the fixed teeth 32 are straight teeth type or inclined teeth type saw teeth;

the two sides of the working end 3 are symmetrically provided with step inclined planes 31 to attach the articular processes and protect the tissues such as the nerve dura mater;

at the front end of the working end 3 a pointed tip 34 is provided, which pointed tip 34 is intended for insertion into a spinal condyle or into an intervertebral disc.

The holder sleeve having the working end 3 described above is a stepped bevel working sleeve, as shown in fig. 4 to 8, in which a series of spinal-side decompression operations are purposefully performed on the basis of the combined use of the endoscope 60, reamer 20 and trephine 30.

Further, the bottom of the free arm 40 is provided with a lock catch 41 connected with the fixing device 50, and the top end of the free arm is provided with a fork 42 for supporting the fixer sleeve;

therefore, one end of the free arm 40 is fixed to one side of the operating table 100 by the fixing means 50, the opened or closed state is controlled by the locker 41, the bottom of the free arm 40 is fixed when closed, and accordingly the fork 42 at the top end thereof can stably support and block the outer tube 2 of the fixator sleeve, thereby reinforcing the fixator sleeve as a whole.

In fig. 1-1 to 1-3, in the prior art of performing a first to third level of intervertebral space expansion based on the TESSYS technique, reamer 20 works without a protective sleeve, and its direction and position are very susceptible to change, which causes the whole surgery to the wrong position, even damages the nerves and other tissues between vertebral bodies 110, with a very high risk of the surgery.

As shown in fig. 4 to 8, when the working end 3 of the fixator sleeve is implanted into the articular process of the spine of the patient, the stepped bevel 31 is attached to the articular process from the side, so as to ensure that the tissues such as nerves in the gap of the vertebral body 10 are not touched to ensure the safety of the operation, and further ensure that the position of the trepan 30 inserted into the outer tube 2 of the fixator sleeve is not changed when the tissue is cut, that is, the front end position of the trepan 30 is not displaced.

One end of the free arm 4 is fixed on the fixing device 50 at one side of the operating table 100, and the fork 42 at the top end of the free arm 4 is used for hooping the outer tube 2, so as to solve the problem that the rear end position of the fixer sleeve changes when the trepan 30 works to cause the change of the whole direction, and further improve the operation safety, the operation efficiency and the success rate.

After the above-described arthroplasty treatment is completed, the endoscope 60 is inserted and various tissues compressing the nerve are treated under direct vision using various instruments such as forceps 70.

In summary, the embodiments presented in connection with the figures are only preferred. It will be apparent to those skilled in the art from this disclosure that other alternative constructions, which are in accordance with the design concept of the present utility model, can be directly derived and are intended to fall within the scope of the utility model as described herein.

Claims

1. A stepped bevel half tooth holder, characterized in that: comprises a fixing device fixedly connected to the operating table, a free arm connected with the fixing device and a fixer sleeve;

the fixer sleeve comprises a handle and an outer tube which are connected with each other, and a working end is arranged at the front end of the outer tube; the working end is provided with at least one observation window, and the opening direction of the observation window comprises forward and upward; the top end of the observation window is provided with a plurality of fixed teeth, two sides of the working end are symmetrically provided with step inclined planes, and the front end of the working end is provided with a pointed head.

2. The stepped ramp half tooth holder as claimed in claim 1, wherein: the fixed teeth are straight teeth type or inclined teeth type saw teeth.

3. The stepped ramp half tooth holder as claimed in claim 2, wherein: the handle is of an annular structure and is provided with an implantation hole for allowing the spinal endoscope to pass through, a shifting block is arranged on the outer edge of one side of the handle, and the shifting block and the handle body are processed into an integrated structure through stamping.

4. A stepped bevel half tooth holder as claimed in claim 3, wherein: the outer tube is provided with a cylindrical cavity tube structure with an outer closed, the outer tube is provided with a hollow cavity for accommodating the through length of the endoscope body of the spinal endoscope, and the implantation hole of the handle is communicated with the hollow cavity of the outer tube.

5. The stepped ramp half tooth holder according to any one of claims 1 to 4, wherein: the bottom of the free arm is provided with a lock catch connected with the fixing device, and the top end of the free arm is provided with a fork head used for supporting the fixer sleeve.