CN210408530U

CN210408530U - Combined bone taking device

Info

Publication number: CN210408530U
Application number: CN201920962919.7U
Authority: CN
Inventors: 杨军; 方泽钧; 洪正华; 王斌; 王章富; 陈利华; 章临亭; 叶菲; 马方华; 龚惠华; 金鹏; 周庭捷; 王跃; 沈向前
Original assignee: Sanmen People's Hospital
Current assignee: Sanmen People's Hospital
Priority date: 2019-06-25
Filing date: 2019-06-25
Publication date: 2020-04-28
Anticipated expiration: 2029-06-25

Abstract

The utility model discloses a combined bone taking device, which comprises a working sleeve and a trepan, wherein a ring is tightly inserted in the working sleeve and can rotate freely, the bottom end of the trepan is provided with annular saw teeth, the combined bone taking device also comprises a long rod screw and a rotating cap, the long rod screw comprises a tip screw and a long rod positioned at the top end of the tip screw, the bottom of the trepan is provided with a bone block accommodating cavity, the top of the trepan is provided with a round perforation for accommodating the long rod to pass through, the upper part of the trepan is provided with a square head, the top end of the long rod is provided with a square rod head, the rotating cap is sleeved on the upper part of the trepan and is provided with a first square groove and a second square groove which are respectively inserted with the square head and the square rod head stably, the utility model not only facilitates the positioning of the bone block to be taken out, but also can be operated step by, the bone taking efficiency and the success rate are improved.

Description

Combined bone taking device

Technical Field

The utility model relates to the technical field of medical supplies, concretely relates to modular bone device of getting.

Background

The intervertebral foramen mirror technology pushes the minimally invasive treatment of the intervertebral disc protrusion to a brand new height, and is the most minimally invasive, the safest and the most economic technology at present; meanwhile, the technology is still in rapid development, and is widely applied to new fields of artificial intervertebral disc and artificial nucleus replacement, fusion under an endoscope, percutaneous technology-assisted internal fixation, spinal tuberculosis minimally invasive treatment, cervical endoscope minimally invasive treatment and the like at present, and more orthopedics doctors are attracted to focus on the expansion of the technology in clinical curative effect and academic value.

The key operation in the process of intervertebral foramen mirror operation is articular process shaping, the traditional method is that C arm machine takes shape through trepan saw under perspective, mainly through set up a round sawtooth at a pipe top along circumference, saw the sclerotin around through rotating the tubulose sawtooth, the sclerotin that cuts out like this is a cylindrical monoblock. The cylindrical bone pieces are removed and the intervertebral disc is accessed via the shaped tunnel for endoscopic surgery.

The problem is that the bone block can not be taken out quickly and effectively after the upper articular process bone block is trephined. The method used at present is to pry the bone block by inserting a tip rod into the kerf, gradually pry the bone block into pieces and clamp the bone block into blocks, increase the operation time and the amount of bleeding, and even push the whole bone block into the vertebral canal, so that the bone block cannot be taken out and the nerve is compressed to cause paralysis. The difficulty in removing the bone pieces is related to the following factors: 1. because the inner side surface and the outer side surface of the bone block are irregular and have different thicknesses, the residual part can not be completely removed (if the nerve on the inner side surface of the bone block is easy to be injured when the bone block is completely removed), 2, the inner side surface of the bone block is attached with soft tissues such as ligamentum flavum and the like 3, no special tool is used for holding, lifting and twisting the bone block.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In order to overcome the defects of the prior art, the combined bone taking device is provided, the bone block to be taken out is convenient to position, meanwhile, the positioning, sawing and pulling of the bone block can be operated step by step, and the bone taking efficiency and the success rate are improved.

(II) technical scheme

The utility model discloses a following technical scheme realizes: the utility model provides a modular get bone device, including work sleeve and trepan, the ring closely inlays and inserts in work sleeve and can the free rotation, the bottom of trepan is provided with annular sawtooth, still includes stock screw and rotating cap, the stock screw includes a tip screw and a stock that is located tip screw top, and the bottom of trepan is provided with the bone piece and holds the chamber and be provided with a circular perforation that is used for holding the stock and passes at its top, circular perforation size and stock thickness phase-match, and the upper portion of trepan is provided with square head, the top of stock is provided with a square pole head, the rotating cap cover is located the upper portion of trepan and is provided with respectively with square head and square pole head stable first square groove and the square groove of second that inlays and insert in its bottom.

Furthermore, the bottom of the rotating cap is provided with a magnetic strip which can be fixed with the square head seam allowance step in a magnetic adsorption mode.

Furthermore, two sides of the rotating cap are symmetrically provided with first handle parts.

Furthermore, two sides of the top end of the trepan are symmetrically provided with second handle parts.

The upper part of the tongue-shaped trepan is the same as the trepan in structure, a tongue-shaped protruding part is arranged at the bottom of the tongue-shaped trepan, and sawteeth are arranged at the tip of the tongue-shaped protruding part.

(III) advantageous effects

Compared with the prior art, the utility model, following beneficial effect has:

the utility model provides a modular get bone device, it is when the assembly, can be so that the stock screw is in the middle part of working sleeve, the tip screw that can ensure to be located stock screw bottom can with wait to take out the bone piece and can stabilize the connection, thereby simultaneously through setting up of rotating cap can conveniently drive the rotatory lower entering of stock screw and enter into the bone piece, can make the trepan carry out the annular saw in addition and cut off the bone piece, and convenient for operation can be quick carry out taking out of bone piece, improves operation efficiency.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of a tongue-shaped trepan structure.

1-a working sleeve; 2-trepan; 3-long rod screws; 4-rotating the cap; 5-tongue ring saw; 21-a bone block receiving cavity; 22-circular perforation; 23-square head; 24-a second handle; 31-pointed screw; 32-long rod; 33-square club head; 41-a first square groove; 42-a second square groove; 43-a magnetic strip; 44-first handle.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

A combined bone-taking device as shown in fig. 1, which comprises a working sleeve 1 and a ring saw 2, wherein the ring saw 2 is tightly inserted into the working sleeve 1 and can rotate freely, the bottom end of the ring saw 2 is provided with annular saw teeth 24, the combined bone-taking device further comprises a long rod screw 3 and a rotating cap 4, the long rod screw 3 comprises a tip screw 31 and a long rod 32 positioned at the top end of the tip screw 31, the bottom of the ring saw 2 is provided with a bone block accommodating cavity 21, the top of the ring saw is provided with a circular through hole 22 for accommodating the long rod 32 to pass through, the upper part of the ring saw 2 is provided with a square head 23, the top of the long rod 32 is provided with a square rod head 33, the rotating cap 4 is sleeved on the upper part of the ring saw 2 and is provided with a first square groove 41 and a second square groove 42 which are respectively inserted into the square head 23 and the.

Wherein, the bottom end of the rotating cap 4 is provided with a magnetic strip 43 which can be fixed with the rabbet step of the square head 23 in a magnetic adsorption way; the two sides of the rotating cap 4 are symmetrically provided with first handle parts 44; the two sides of the top end of the circular saw 2 are symmetrically provided with second handle parts 24, the circular saw further comprises a tongue-shaped circular saw 5, the upper part of the tongue-shaped circular saw 5 is identical to the structure of the circular saw 2, the bottom of the tongue-shaped circular saw 5 is provided with a tongue-shaped protruding part, and the tip of the tongue-shaped protruding part is provided with sawteeth.

The utility model provides a modular bone device that gets, when it is used specifically, at first with work sleeve 1 location in the department of articular process, adsorb magnetic stripe 43 through its bottom with rotating cap 4 and be fixed in the square head 23 on trepan 2 upper portion simultaneously, insert stock screw 3 in trepan 2 from the lower part in addition, make stock 32 pass circular perforation 22, it is worth mentioning that stock 32 is the circular form that matches with circular perforation 22 shape passing circular perforation 22, the square head 33 of stock 32 tip alternates in the second square groove 42, then put the whole after the assembly into work sleeve 1, thereby operate tip screw 31 of stock screw 3 bottom to screw in the bone piece through the first stalk portion 44 on rotating cap 4, make tip screw 31 and bone piece relatively fixed, then demolish rotating cap 4 from the top of trepan 2, then carry out annular saw to the bone piece that is located in work sleeve 1 through rotating second handle portion 24 rotation trepan 2, when sawed into place, the trephine 2 is withdrawn and the bone pieces are removed by twisting, rocking and lifting the rod screw 3.

It should be noted that, regarding the ring saw 2 used in fig. 1, when the ring saw 2 is used for circular sawing, there may be partial sawing but there may be some places without sawing, if the ring saw 2 with the same bottom as the existing ring saw is used for continuous sawing, it may cause damage to blood vessels and nerves, at this time, the ring saw 2 needs to be removed, and the tongue-shaped ring saw 5 shown in fig. 2 is used instead, and partial bone is sawn through the tongue-shaped protrusion at the bottom of the tongue-shaped ring saw 5.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the spirit and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by the technical solution of the present invention by those skilled in the art should fall into the protection scope of the present invention, and the technical contents claimed by the present invention have been fully recorded in the claims.

Claims

1. The utility model provides a modular bone device of getting, includes work sleeve (1) and trepan (2), trepan (2) closely inlays and inserts in work sleeve (1) and can free rotation, the bottom of trepan (2) is provided with annular sawtooth, its characterized in that: still include stock screw (3) and rotating cap (4), stock screw (3) include a tip screw (31) and one lie in stock (32) on tip screw (31) top, and the bottom of trepan (2) is provided with the bone piece and holds chamber (21) and be provided with one at its top and be used for holding circular perforation (22) that stock (32) passed, and the upper portion of trepan (2) is provided with square head (23), the top of stock (32) is provided with square pole head (33), rotating cap (4) cover is located the upper portion of trepan (2) and is provided with respectively with square head (23) and square pole head (33) stable first square groove (41) and the square groove of second (42) of inlaying.

2. A modular bone harvesting device according to claim 1, wherein: the bottom end of the rotating cap (4) is provided with a magnetic strip (43) which can be fixed with the rabbet step of the square head (23) in a magnetic adsorption manner.

3. A modular bone removal device as claimed in claim 1 or claim 2, wherein: the two sides of the rotating cap (4) are symmetrically provided with first handle parts (44).

4. A modular bone harvesting device according to claim 1, wherein: and second handle parts (24) are symmetrically arranged on two sides of the top end of the trepan (2).

5. A modular bone harvesting device according to claim 1, wherein: the ring saw is characterized by further comprising a tongue-shaped trepan (5), the upper portion of the tongue-shaped trepan (5) is identical to the structure of the trepan (2), a tongue-shaped protruding portion is arranged at the bottom of the tongue-shaped trepan (5), and sawteeth are arranged at the tip end of the tongue-shaped protruding portion.