CN209863951U

CN209863951U - Trepan for orthopedics

Info

Publication number: CN209863951U
Application number: CN201920213510.5U
Authority: CN
Inventors: 王树人; 王思然; 王文革; 王晓霞; 王天龙
Original assignee: Heilongjiang University of Chinese Medicine
Current assignee: Heilongjiang University of Chinese Medicine
Priority date: 2019-02-19
Filing date: 2019-02-19
Publication date: 2019-12-31
Anticipated expiration: 2029-02-19

Abstract

The utility model discloses an orthopedic trepan, which comprises a hollow circular tube, wherein the lower end of the hollow circular tube is provided with sawteeth, and the outer side of the upper section of the hollow circular tube is sleeved with a sleeve; the upper end of the sleeve is provided with a cover plate, and the lower end of the sleeve is provided with a disc; the interior of the sleeve is spliced with the square insertion rod through the square through hole; the lath is arranged on the outer side of the square insertion rod, the first annular groove formed in the outer wall of the upper side of the hollow circular tube is inserted into the inner side of the square insertion rod, the sleeve can rotate relative to the hollow circular tube due to the structure, the sleeve is not easy to slide up and down, and pressure can be applied to the hand conveniently along the length direction of the hollow circular tube. The middle part of the hollow circular tube is provided with an annular groove which is meshed and connected with two pluggable semicircular structures. The structure can drive the hollow circular tube to rotate by rotating the semicircular ring structure in the middle part, thereby playing the role of saw teeth.

Description

Trepan for orthopedics

Technical Field

The utility model relates to an orthopedics apparatus technical field, concretely relates to trepan for orthopedics.

Background

Trephines are common surgical instruments used in orthopedics. The main purpose is to operate the intervertebral foramen and other positions and grind the target position of the vertebra by using the annular sawteeth at the tail end of the hoop squat. The ring saws for orthopedics sold in the market at present are all long hollow metal tubes, one end of each ring saw is provided with annular saw teeth, and the other end of each ring saw is provided with a holding lug for twisting operation. The endoscope can be inserted into the cavity body, so that the visual operation is facilitated. When the orthopedic trepan annular saw tooth grinding tool is specifically operated, one end of the orthopedic trepan annular saw tooth is penetrated into a vertebral target position, the holding lug is held by one hand to rotate, the annular saw tooth is driven to rotate, and therefore the vertebra is ground.

Because the hollow metal tube is longer, the grinding operation is carried out through the rotation of the tail end of the metal tube, the trepan is easy to pry and move left and right, and the operation position is inaccurate. In addition, although the holding lug arranged at the tail end can be used for rotating operation, the extrusion force to the sawtooth part of the metal pipe is small and unstable. And the nerve tissues in the vertebra are more, and the nerve is easily damaged by misoperation, so that unnecessary operation sequelae or complications are caused.

The existing trepan for orthopaedics focuses on the arrangement modification of the endoscope, and although a plurality of structural improvement designs of the trepan for orthopaedics are provided, the influence of the operation stability is ignored.

SUMMERY OF THE UTILITY MODEL

In view of the above technical problem, an object of the present invention is to provide an improved trepan for orthopedics to improve the stability of the trepan for orthopedics operation and avoid unnecessary damage to nerve tissue.

In order to achieve the above object, the utility model provides a following technical scheme:

a trepan for orthopedics department, its major structure is hollow pipe, and the lower extreme of hollow pipe is equipped with the sawtooth, utilizes the sawtooth to operate the operation position. The sleeve is sleeved on the outer wall of the upper section of the hollow circular tube in a sliding mode, a cover plate is fixedly connected to the upper end of the sleeve, and a circular through hole is formed in the cover plate. The lower end of the sleeve is fixedly connected with a disc. The inside symmetry of telescopic is equipped with two square through-holes, and square inserted bar, the outside end fixedly connected with lath of square inserted bar are overlapped in the inboard slip of square through-hole. Be equipped with first annular groove on the upper segment outer wall of cavity pipe, the medial extremity and the activity of first annular groove of square inserted bar are pegged graft, and telescopic inside is located square through hole both sides and all is equipped with built-in groove, the first spring of inner wall fixedly connected with in built-in groove, the other end and the lath fixed connection of first spring. The arrangement of the structure provides for applying a steady downward force to the orthopaedic trephine tip. And the hollow circular tube is sleeved with the sleeve in a sliding manner, when the hollow circular tube rotates, the square insertion rod rotates in the first annular groove, and the sleeve does not rotate along with the hollow circular tube, so that the tail end of the orthopedic trepan can be conveniently and stably held by hand.

As a further optimized scheme, a second annular groove is formed in the middle of the hollow circular tube, first teeth are arranged on the inner side of the second annular groove, a first semicircular ring and a second semicircular ring are tightly attached to the inner side of the second annular groove respectively, the first semicircular ring and the second semicircular ring form a circular ring, second teeth are distributed on the inner side of the circular ring, and the surface of the second teeth is meshed with the surface of the first teeth. The setting up of this structure provides the condition for orthopedics is with trepan middle part position applyed the turning force, and when the cooperation sleeve used, the perpendicular effort was applyed to the sleeve in one hand, and the turning force was applyed to the ring that first semicircle ring and second semicircle ring are constituteed in one hand for perpendicular effort and turning force are all more stable, and the operation of being convenient for. Thereby avoiding unnecessary operation injury caused by unstable force application.

As a further optimized scheme, the both ends of first semicircle ring all are equipped with the fixture block, and the inside of fixture block is equipped with the recess, the inboard fixedly connected with second spring of recess, the other end fixedly connected with bayonet lock of second spring, and the inside both ends of second semicircle ring all are equipped with the draw-in groove, and the surface sliding of fixture block cup joints the inboard of draw-in groove, and the inside of draw-in groove is equipped with the bayonet lock through-hole, and the surface sliding of bayonet lock cup joints the inboard of bayonet lock through-hole. The structure provides convenience for the installation and the disassembly of the first semicircular ring and the second semicircular ring, and is convenient for the cleaning and the disinfection of instruments.

As a further optimized scheme, the diameter of the circular through hole can be smaller than the outer diameter of the hollow circular tube, so that the sleeve can be better prevented from slipping.

As a further optimized scheme, the outer diameter of the cover plate is smaller than that of the disc and larger than that of the hollow circular tube. The sleeve can be prevented from slipping, and the obstruction of the cover plate to hands is reduced.

As a further optimized scheme, the outer walls of the first semicircular ring and the second semicircular ring are provided with anti-skid protrusions so as to improve friction with hands and facilitate application of rotating force.

Compared with the prior art, the beneficial effects of the utility model are that: the trepan for orthopedics can solve the problem of holding a hollow round pipe by taking the structure of the sleeve part as a main handle; meanwhile, the two semicircular rings can be spliced into a whole circular ring, so that the whole circular ring drives the hollow circular pipe to rotate through the meshing effect of the teeth. When the hollow circular tube is used, one hand holds the sleeve to apply vertical force to the hollow circular tube, and the other hand holds the whole circular ring formed by splicing the two semicircular rings to apply rotating force to the hollow circular tube, so that the force application stability and the stability of operation are improved, the accidental injury to nerves caused by prying the hollow circular tube and the like is reduced, and unnecessary operation injury and complications are caused.

Drawings

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

fig. 2 is an enlarged schematic view of the utility model at a;

fig. 3 is a partially enlarged schematic view of a second annular groove of the present invention;

fig. 4 is a schematic top view of the engagement between two teeth of the present invention;

fig. 5 is an enlarged schematic view of the position b of the present invention.

In the figure: 1 hollow round tube, 11 sawteeth, 12 sleeves, 13 cover plates, 14 circular through holes, 15 circular discs, 16 square through holes, 17 square inserted rods, 18 first annular grooves, 19 laths, 110 built-in grooves, 111 first springs, 112 second annular grooves, 2 first semi-circular rings, 21 second semi-circular rings, 23 second teeth, 24 clamping grooves, 25 clamping blocks, 26 grooves, 27 second springs, 28 clamping pins and 29 circular through holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so 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, the present invention provides an orthopedic trepan, which includes a hollow circular tube 1, wherein the lower end of the hollow circular tube 1 is provided with a sawtooth 11, the sawtooth 11 is annular, the upper end of the hollow circular tube 1 is provided with a sleeve 12, the sleeve 12 is slidably sleeved on the upper end of the hollow circular tube 1, the upper end of the sleeve 12 is provided with a cover plate 13, a circular through hole 14 is formed in the cover plate 13, the lower end of the sleeve 12 is provided with a disc 15, and the disc 15 is slidably sleeved on the surface of the hollow circular tube 1.

Referring to fig. 2, a square through hole 16 is formed in a sleeve 12, a square insertion rod 17 is slidably sleeved on the inner side of the square through hole 16, the surface of the square insertion rod 17 is slidably sleeved on the inner side of the square through hole 16, a strip 19 is arranged at one end of the square insertion rod 17, a first annular groove 18 is formed in a hollow circular tube 1, the other end of the square insertion rod 17 is slidably sleeved on the first annular groove 18, a built-in groove 110 is formed in the sleeve 12, a first spring 111 is arranged on the inner wall of the built-in groove 110, the other end of the first spring 111 is arranged on the strip 19, one end of the first spring 111 is fixedly connected to the inner side of the built-in groove 110, the other end of the first spring 111 is fixedly connected to the surface of the strip 19, the square insertion rod 17 can be separated from the first annular groove 18 by stretching the strip.

Referring to fig. 3, a second annular groove 112 is formed in the middle of the hollow circular tube 1, the first teeth 22 are disposed inside the second annular groove 112, and the first semicircular ring 2 and the second semicircular ring 21 are respectively tightly attached to the inside of the second annular groove 112.

Referring to fig. 4, the first semicircular ring 2 and the second semicircular ring 21 form a circular ring, second teeth 23 are distributed on the inner side of the circular ring, the surface of the second teeth 23 is engaged with the surface of the first teeth 22, the first teeth and the second teeth are engaged, and the hollow circular tube 1 rotates along with the first teeth and the second teeth under the condition of rotating the circular ring.

Referring to fig. 5, the both ends of first semicircle ring 21 all are equipped with fixture block 25, the inside of fixture block 25 is equipped with recess 26, the inboard fixedly connected with second spring 27 of recess 26, the other end fixedly connected with bayonet lock 28 of second spring 27, the inside both ends of second semicircle ring 21 all are equipped with draw-in groove 24, the inboard of draw-in groove 24 is cup jointed in the surface sliding of fixture block 25, the inside of draw-in groove 24 is equipped with bayonet lock through-hole 29, the inboard of bayonet lock through-hole 29 is cup jointed in the surface sliding of bayonet lock 28, make things convenient for the concatenation and the dismantlement of two semicircle.

The utility model discloses when concrete implementation: when the sleeve 12 needs to be installed, two laths 19 are pulled outwards, the upper end of the hollow circular tube 1 is sleeved with the sleeve 12 in a sliding mode sequentially through the disc 15 and the sleeve 12, the cover plate 13 can cover the port position of the hollow circular tube 1, the circular through hole 14 can ensure that the endoscope enters the hollow circular tube 1, the disc 15 can play a role in preventing the hands from falling off, the sleeve 12 can serve as a handle structure, when the position of the lath 19 corresponds to the position of the first annular groove 18, the telescopic structure is reset through the stretching of the first spring 111, the square insertion rod 17 is inserted into the inner side of the first annular groove 18, the sleeve 12 is fixed, and the square insertion rod 17 plays a role in an elastic locking pin. When needs rotate cavity pipe 1, hold two semicircle rings, can guarantee the application of force position of hand, rotate two semicircle rings, can make cavity pipe 1 drive sawtooth 11 and rotate, thereby cut the operation position, when needs are dismantled two semicircle rings, press bayonet lock 28, through the compression effect of second spring 27, make bayonet lock 28 and bayonet lock through-hole 29 throw off, thereby make the inboard roll-off of clamping block 24 can be followed to fixture block 25, accomplish the dismantlement of two semicircle rings.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an orthopedics trepan, includes cavity pipe (1), the lower extreme of cavity pipe (1) is equipped with sawtooth (11), its characterized in that: the upper section outer wall of the hollow circular tube (1) is sleeved with a sleeve (12) in a sliding mode, the upper end of the sleeve (12) is provided with a cover plate (13), a circular through hole (14) is formed in the cover plate (13), a disc (15) is arranged at the lower end of the sleeve (12), two square through holes (16) are symmetrically formed in the sleeve (12), a square insertion rod (17) is slidably sleeved on the inner side of each square through hole (16), a lath (19) is arranged at the outer side end of each square insertion rod (17), a first annular groove (18) is formed in the upper section outer wall of the hollow circular tube (1), the inner side end of each square insertion rod (17) is movably inserted into the first annular groove (18), built-in grooves (110) are formed in the two sides, located on the two sides of each square through hole (16), of the inner wall of each built-in groove (110) is fixedly connected with a first spring, the other end of the first spring (111) is fixedly connected with the batten (19); a second annular groove (112) is formed in the middle of the hollow circular tube (1), first teeth (22) are arranged on the inner side of the second annular groove (112), a first semicircular ring (2) and a second semicircular ring (21) are respectively tightly attached to the inner side of the second annular groove (112), the first semicircular ring (2) and the second semicircular ring (21) form a circular ring, second teeth (23) are distributed on the inner side of the circular ring, and the surface of the second teeth (23) is meshed with the surface of the first teeth (22); the both ends of first semicircle ring (2) all are equipped with fixture block (25), and the inside of fixture block (25) is equipped with recess (26), inboard fixedly connected with second spring (27) of recess (26), the other end fixedly connected with bayonet lock (28) of second spring (27), the inside both ends of second semicircle ring (21) all are equipped with draw-in groove (24), and the surface slip of fixture block (25) cup joints the inboard of draw-in groove (24), and the inside of draw-in groove (24) is equipped with bayonet lock through-hole (29), and the surface slip of bayonet lock (28) cup joints the inboard of bayonet lock through-hole (29).

2. The trepan for orthopedics according to claim 1, characterized in that: the diameter of the circular through hole (14) is smaller than the outer diameter of the hollow circular tube (1).

3. The trepan for orthopedics according to claim 1, characterized in that: the outer diameter of the cover plate (13) is smaller than that of the disc (15) and larger than that of the hollow circular tube (1).

4. An orthopaedic trepan according to any of claims 1-3, wherein: the outer walls of the first semicircular ring (2) and the second semicircular ring (21) are provided with anti-skid protrusions.