CN210228248U

CN210228248U - Intervertebral foramen mirror articular process shaping bone piece extractor

Info

Publication number: CN210228248U
Application number: CN201920782269.8U
Authority: CN
Inventors: Haihao Wu; 吴海昊; Tao Tang; 汤涛; Chunguang Zhou; 周春光
Original assignee: Hwa Mei Hospital University Of Chinese Academy Of Sciences Ningbo No 2 Hospital
Current assignee: Hwa Mei Hospital University Of Chinese Academy Of Sciences Ningbo No 2 Hospital
Priority date: 2019-05-28
Filing date: 2019-05-28
Publication date: 2020-04-03
Anticipated expiration: 2029-05-28

Abstract

The utility model provides a bone block extractor for the apopore articular process, which comprises a bone extractor and a handle; the bone taking device is detachably connected with the handle; the bone extractor comprises a first long rod, the lower end of the first long rod is fixedly connected with a bone block fixing part, and the upper end of the first long rod is fixedly connected with a second long rod; the front and back surfaces of the second long rod are provided with external threads, and the left and right surfaces are provided with scales; the second long rod is also sleeved with a depth limiter; the upper end of the second long rod is fixedly connected with a connecting part. The utility model discloses a molded bone block extractor of intervertebral foramen mirror articular process, simple structure, convenient to use can cooperate current trepan to use, once only takes out articular process molded bone block to reduce medical personnel's the work degree of difficulty and work load, reduce the probability that arouses the complication simultaneously.

Description

Intervertebral foramen mirror articular process shaping bone piece extractor

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to intervertebral foramen mirror articular process shaping bone piece extractor.

Background

The intervertebral foramen mirror operation is a spinal minimally invasive technology which is the most rapidly developed in spinal surgery in recent years, and the intervertebral foramen mirror articular process forming technology (TF-PEF) is the core and the key of the intervertebral foramen mirror operation.

The trephine is used for articular process forming, the efficiency is high, the effect is ideal, and the trephine is widely applied clinically. However, according to statistics, bone blocks sawed in 75-90% of cases can be taken out at one time along with a trepan, and residual bone blocks need to be nipped under a mirror or even smashed and taken out in blocks, so that operation time and workload of medical workers are greatly increased, and complications are easily caused by the bone blocks which are not taken out completely.

Therefore, there is a need for an extractor that can be used with a trepan and that can extract the apophyseal bone pieces at one time.

Disclosure of Invention

In order to solve the problem, the utility model provides an intervertebral foramen mirror articular process shaping bone piece extractor.

The technical scheme of the utility model is that: an intervertebral foramen mirror articular process shaping bone piece extractor, including bone extractor and hand grip; the bone extractor is detachably connected with the handle; the bone extractor comprises a first long rod, the lower end of the first long rod is fixedly connected with a bone block fixing part, and the upper end of the first long rod is fixedly connected with a second long rod; the front and back surfaces of the second long rod are provided with external threads, and the left and right surfaces of the second long rod are provided with scales; the second long rod is also sleeved with a depth limiter; the upper end of the second long rod is fixedly connected with a connecting part.

Further, the bone extractor have 3 different models, be first stock diameter 4.0mm, first stock diameter 5.5mm, first stock diameter 6.5mm respectively, just the external diameter of first stock be more than or equal to the external diameter of bone piece fixed part and second stock.

Furthermore, the handle is provided with a clamping groove, and the clamping groove is matched with the connecting part.

Furthermore, the connecting part is provided with a protrusion, the clamping groove is internally provided with a groove, and the protrusion is matched with the groove.

Furthermore, the bone block fixing part is spiral.

Furthermore, an internal thread is arranged in the depth limiter and matched with the external thread.

Furthermore, the depth limiter is provided with an anti-slip strip.

Furthermore, the handle is provided with anti-skid patterns.

The utility model discloses a molded bone block extractor of intervertebral foramen mirror articular process, simple structure, convenient to use can cooperate current trepan to use, once only takes out articular process molded bone block to reduce medical personnel's the work degree of difficulty and work load, reduce the probability that arouses the complication simultaneously.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of the depth stop and the second long rod;

FIG. 3 is a sectional view of the structure of the connection part and the slot;

FIG. 4 is a cross-sectional view of the depth stop in cooperation with a second elongate rod;

fig. 5 is a use view of the fitting trepan of the present invention.

In the figure, 1-bone taking device, 2-handle and 3-trepan; 1.1-first long rod, 1.2-bone block fixing part, 1.3-second long rod, 1.4-external thread, 1.5-scale, 1.6-depth limiter, 1.7-connecting part, 1.8-bulge, 1.9-internal thread, 1.10-antislip strip; 2.1-neck, 2.2-groove, 2.3-antiskid pattern.

Detailed Description

The following describes in detail an intervertebral foramen arthroscopic apophysis bone block extractor of the present invention with reference to the attached drawings.

As shown in fig. 1, 2, 3 and 4, the intervertebral foramen arthroscopic apophysis bone block extractor comprises a bone extractor 1 and a handle 2; the bone taking device 1 is detachably connected with the handle; the bone taking device 1 comprises a first long rod 1.1, the lower end of the first long rod 1.1 is fixedly connected with a bone block fixing part 1.2, and the upper end is fixedly connected with a second long rod 1.3; the front and back surfaces of the second long rod 1.3 are provided with external threads 1.4, and the left and right surfaces are provided with scales 1.5; the second long rod 1.3 is also sleeved with a depth limiter 1.6; the upper end of the second long rod 1.3 is fixedly connected with a connecting part 1.7; the bone taking device 1 has 3 different models, namely a first long rod 1.1 with the diameter of 4.0mm, a first long rod 1.1 with the diameter of 5.5mm and a first long rod 1.1 with the diameter of 6.5mm, wherein the outer diameter of the first long rod 1.1 is more than or equal to the outer diameter of a bone block fixing part 1.2 and the outer diameter of a second long rod 1.3; a clamping groove 2.1 is arranged on the handle 2, and the clamping groove 2.1 is matched with the connecting part 1.7; the connecting part 1.7 is provided with a bulge 1.8, the clamping groove 2.1 is internally provided with a groove 2.2, and the bulge 1.8 is matched with the groove 2.2; the bone block fixing part 1.2 is spiral; an internal thread 1.9 is arranged in the depth limiter 1.6, and the internal thread 1.9 is matched with the external thread 1.4; the depth limiter 1.6 is provided with an anti-slip strip 1.10; the handle 2 is provided with anti-skid patterns 2.3.

As shown in fig. 5, in actual use, medical staff firstly perform perspective on an operation part of a patient, determine the position of a bone block to be girdled and the girdling depth, determine a trepan 3 with a proper diameter and a bone extractor 1 with a proper diameter, and assemble the bone extractor 1 and a handle 2; performing circular cutting on the surgical site of the patient by using a circular saw 3; when the trepan is cut to half of the set depth, the intervertebral foramen arthroscopic apophysis molding bone block extractor is inserted into the trepan 3; referring to the scale 1.5, the depth limiter 1.6 is rotated to set the fixed depth of the bone extractor; the handle 2 is rotated, pressure is applied at the same time, and the spiral bone block fixing part 1.2 can be screwed into a bone block to be cut off to play a role in fixing the bone block; after the bone block is fixed, the medical care personnel gently lift the handle 2 with one hand and continue to rotate the trepan 3 with the other hand until the whole bone block is circularly cut; the trephine 3 is slowly removed with an arthroscopic apophyseal bone block extractor of the present application and the ring-cut bone block can be cut off at one time.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the preferred embodiments, it is not limited to the present invention, and any skilled person in the art can make some modifications or equivalent embodiments without departing from the scope of the present invention, but all the technical matters of the present invention are within the scope of the present invention.

Claims

1. The utility model provides a foraminiferous mirror articular process shaping bone piece extractor which characterized in that: comprises a bone extractor (1) and a handle (2); the bone extractor (1) is detachably connected with the handle; the bone taking device (1) comprises a first long rod (1.1), the lower end of the first long rod (1.1) is fixedly connected with a bone block fixing part (1.2), and the upper end of the first long rod is fixedly connected with a second long rod (1.3); the front and back surfaces of the second long rod (1.3) are provided with external threads (1.4), and the left and right surfaces are provided with scales (1.5); the second long rod (1.3) is also sleeved with a depth limiter (1.6); the upper end of the second long rod (1.3) is fixedly connected with a connecting part (1.7).

2. The foraminal arthroscopic apophyseal bone block extractor of claim 1, wherein: get bone object (1) have 3 different models, be first stock (1.1) diameter 4.0mm respectively, first stock (1.1) diameter 5.5mm, first stock (1.1) diameter 6.5mm, just the external diameter of first stock (1.1) be greater than or equal to the external diameter of bone piece fixed part (1.2) and second stock (1.3).

3. The foraminal arthroscopic apophyseal bone block extractor of claim 1, wherein: the handle (2) is provided with a clamping groove (2.1), and the clamping groove (2.1) is matched with the connecting part (1.7).

4. An intervertebral foraminal zygapophyseal bone block extractor as recited in claim 3, wherein: connecting portion (1.7) on be equipped with arch (1.8), draw-in groove (2.1) in be equipped with recess (2.2), arch (1.8) with recess (2.2) phase-match.

5. The foraminal arthroscopic apophyseal bone block extractor of claim 1, wherein: the bone block fixing part (1.2) is spiral.

6. The foraminal arthroscopic apophyseal bone block extractor of claim 1, wherein: the depth limiter (1.6) is internally provided with an internal thread (1.9), and the internal thread (1.9) is matched with the external thread (1.4).

7. The foraminal arthroscopic apophyseal bone block extractor of claim 6, wherein: and the depth limiter (1.6) is provided with an anti-slip strip (1.10).

8. The foraminal arthroscopic apophyseal bone block extractor of claim 1, wherein: the handle (2) is provided with anti-skid patterns (2.3).