CN215458388U - Bone drill for vertebroplasty - Google Patents

Abstract

The utility model belongs to the technical field of medical instruments and discloses a bone drill for vertebroplasty, which comprises a drill bit, wherein a first fixed ring shaft is movably sleeved at the upper end of the drill bit, a first contraction rod is fixedly installed on the outer side of the first fixed ring shaft, a second contraction rod is movably sleeved at the bottom of the first contraction rod, and a second fixed ring shaft is fixedly installed at the lower end of the second contraction rod. The positioning device achieves the purpose of good positioning effect through the matching work of the structures such as the first shrinkage rod, the second fixed ring shaft and the third shrinkage rods, when a drill bit moves downwards to enter a human body, the three third shrinkage rods synchronously shrink towards the interior of the second shrinkage rod under the action of the third fixed ring shaft, and when the third shrinkage rods shrink, the second shrinkage rod shrinks, so that the shrinkage consistency is ensured, and a good positioning and supporting effect is achieved.

Description

Bone drill for vertebroplasty

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to a bone drill for vertebroplasty.

Background

The vertebroplasty is called percutaneous puncture vertebroplasty, belongs to minimally invasive surgery, and is a technology for strengthening a centrum by injecting bone cement (polymethyl acrylate) or artificial bone into a diseased centrum, is invented by Deramond in 1984 and is applied for the first time, a doctor Galibert is applied to treatment of vertebral body hemangioma for the first time in 1987, and PVP is applied to treatment of osteoporotic vertebral fracture is reported for the first time abroad in 1994.

When carrying out vertebroplasty, usually need to bore the bone with the bone drill, pour into bone cement into afterwards, general operation mode is that manual rotatory bone drill carries out the drilling, but at the in-process of drilling, because the skeleton is harder, the in-process of drilling can appear the shake that the range is unequal, can cause the secondary of being operated person's wound to break and the problem of opening position deviation like this, therefore propose a location effectual bone drill for vertebroplasty to above-mentioned problem.

When drilling, because the bone drill deepens into the muscle, can cause the oppression to surrounding muscle, will lead to the partial bleeding to because the internal cavity that forms of flesh when pulling out the bone drill, blood oozes more, influences the person's sight of executing the art, current operation is cleaned through hemostatic materials such as hemostatic cotton, but the operation time has been wasted in the in-service use, and hemostatic effect is general, consequently designs a vertebroplasty that hemostatic effect is good and uses the bone drill.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems and provides a bone drill for vertebroplasty, which has the advantages of good positioning effect and good hemostatic effect.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a bone drill for vertebroplasty, includes the drill bit, first fixed ring axle has been cup jointed in the upper end activity of drill bit, the outside fixed mounting of first fixed ring axle has first shrink pole, the bottom activity of first shrink pole has cup jointed the second shrink pole, the lower extreme fixed mounting of second shrink pole has second fixed ring axle, the bottom activity of second shrink pole has cup jointed the third shrink pole, the lower extreme fixed mounting of third shrink pole has third fixed ring axle, the bottom fixedly connected with fixed block of third shrink pole, the bottom activity of fixed block has cup jointed hemostatic device, guarantees through second fixed ring axle and third fixed ring axle that three second shrink pole or three third shrink pole can the synchronous motion when drilling, can not produce the skew, reaches stable effect.

As a preferable technical scheme of the utility model, the hemostasis device comprises a clamping shaft, the bottom of the clamping shaft is fixedly connected with a fixed disc, the bottom of the fixed disc is fixedly connected with a hemostasis block, and the clamping shaft is fixedly sleeved with the fixed block.

According to the preferred technical scheme, the fixing blocks are inverted-L-shaped and three in number, the fixing blocks are made of soft rubber blocks, grooves are formed in the bottoms of the fixing blocks, the fixing blocks can well fix the hemostatic device, and the hemostatic device is prevented from being poor in hemostatic effect due to too large deformation.

As a preferable technical scheme of the utility model, the hemostasis block is made of a sponge block, the thickness values of the two sides of the hemostasis block are larger than that of the middle part of the hemostasis block, the outer side of the hemostasis block is extruded when the hemostasis block is in the drill bit body, and the inner side of the hemostasis block cannot be subjected to strong pressure due to the shape of the hemostasis block, so that the hemostasis effect is ensured.

As a preferable technical scheme of the utility model, the number of the first contraction rod, the second contraction rod and the third contraction rod is three, the first contraction rod, the second contraction rod and the third contraction rod are distributed on the outer side of the drill bit at equal angles, the diameter values of the first contraction rod, the second contraction rod and the third contraction rod are sequentially decreased, the triangle has stability, the stability is ensured, the material cost is reduced, and the first contraction rod, the second contraction rod and the third contraction rod are mutually sleeved and can still keep balance along with the entering of the drill bit.

As a preferred technical scheme of the present invention, the shape of the clamping shaft is an inverted convex shape, the length of the clamping shaft is two thirds of the length of the fixing block, and the length of the clamping shaft can be ensured to be fixed with the fixing block and can be ensured to be detachable and replaceable.

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

1. the positioning device achieves the purpose of good positioning effect through the matching work of the structures such as the first shrinkage rod, the second fixed ring shaft and the third shrinkage rods, when a drill bit moves downwards to enter a human body, the three third shrinkage rods synchronously shrink towards the interior of the second shrinkage rod under the action of the third fixed ring shaft, and when the third shrinkage rods shrink, the second shrinkage rod shrinks, so that the shrinkage consistency is ensured, and a good positioning and supporting effect is achieved.

2. The hemostatic device achieves the purpose of good hemostatic effect through the matching of structures such as the clamping shaft, the fixed disc and the hemostatic mass, the shape of the hemostatic mass can be more attached to the skin in a squeezing mode when the drill bit enters the human body, more bleeding occurs when the drill bit is pulled out, the hemostatic mass expands to absorb more blood when the hemostatic mass is not limited, and hemostatic components are contained in the hemostatic mass.

Drawings

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

FIG. 2 is a schematic view of the structure of the drill bit of the present invention;

FIG. 3 is a view of the hemostatic device of the present invention in a structural separation;

FIG. 4 is a schematic view of the engaging relationship between the shaft and the fixing block according to the present invention;

FIG. 5 is a cross-sectional view of a hemostatic mass of the present invention;

fig. 6 is a perspective view of the present invention.

In the figure: 1. a drill bit; 2. a first stationary ring shaft; 3. a first retracting lever; 4. a second retracting lever; 5. a second stationary ring shaft; 6. a third retracting lever; 7. a third stationary ring shaft; 8. a fixed block; 9. a hemostatic device; 91. clamping a shaft; 92. fixing the disc; 93. stopping bleeding.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 6, the utility model provides a bone drill for vertebroplasty, comprising a drill bit 1, a first fixed ring shaft 2 movably sleeved at the upper end of the drill bit 1, a first contraction rod 3 fixedly installed at the outer side of the first fixed ring shaft 2, a second contraction rod 4 movably sleeved at the bottom of the first contraction rod 3, a second fixed ring shaft 5 fixedly installed at the lower end of the second contraction rod 4, a third contraction rod 6 movably sleeved at the bottom of the second contraction rod 4, a third fixed ring shaft 7 fixedly installed at the lower end of the third contraction rod 6, a fixed block 8 fixedly connected at the bottom of the third contraction rod 6, a hemostasis device 9 movably sleeved at the bottom of the fixed block 8, guarantee through second fixed ring axle 5 and third fixed ring axle 7 that three second shrink pole 4 or three third shrink pole 6 can synchronous motion when drilling, can not produce the skew, reach stable effect.

Wherein, hemostasis device 9 includes card axle 91, the fixed disc 92 of bottom fixedly connected with of card axle 91, and the bottom fixedly connected with hemostasis piece 93 of fixed disc 92, card axle 91 and the fixed block 8 are fixed to be cup jointed, and this structure can have fine hemostatic effect to convenient the change can guarantee its health nature.

Wherein, the shape of fixed block 8 is for falling L type and quantity three, and fixed block 8 is made for the soft piece of rubber and the bottom is seted up flutedly, and fixed block 8 can have fine fixed effect to hemostasis device 9 to it is poor to guarantee that hemostasis device 9 can not lead to the hemostasis effect because of deformation is too big.

Wherein, hemostatic mass 93 is made for the sponge piece, and the thickness value of hemostatic mass 93 both sides is greater than the thickness value at middle part, extrudees hemostatic mass 93's the outside when 1 is internal at the drill bit, because hemostatic mass 93's shape leads to the inboard very strong pressure that can not receive, has guaranteed hemostatic effect.

Wherein, first shrink pole 3, second shrink pole 4 and third shrink pole 6 quantity are three and when angular distribution in the outside of drill bit 1, first shrink pole 3, second shrink pole 4 and third shrink pole 6 diameter value decrease in proper order, triangle-shaped has stability, can reduce material reduce cost when guaranteeing to be stable, first shrink pole 3, second shrink pole 4 and third shrink pole 6 cup joint each other and can still keep balance along with the entering of drill bit 1.

Wherein, the shape of card axle 91 is for falling protruding type, and the length value of card axle 91 is two-thirds of the 8 length values of fixed block, and the length of card axle 91 can be guaranteed to fix with fixed block 8, can guarantee again to pull down the change.

The working principle and the using process of the utility model are as follows:

the drill bit 1 is aligned to a position needing drilling, then the drill bit 1 is rotated to drill, firstly, the hemostatic block 93 is subjected to pressure deformation, then the fixing block 8 is contacted with the skin, and along with the continuous entering of the drill bit 1 into the body, the three third contraction rods 6 and the second contraction rods 4 synchronously move upwards under the action of extrusion on the third fixing ring shaft 7 and the second fixing ring shaft 5, so that the consistency is ensured, and the stable effect is achieved;

when the drilling is finished and the drill bit 1 is pulled out, the hemostatic device 9 is not expanded by pressure to recover the original shape, and the blood generated during pulling out has more adsorption capacity.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. A bone drill for vertebroplasty, comprising a drill (1), characterized in that: the utility model discloses a hemostatic drill bit, including drill bit (1), first fixed ring axle (2) has been cup jointed in the upper end activity of drill bit (1), the outside fixed mounting of first fixed ring axle (2) has first shrink pole (3), the bottom activity of first shrink pole (3) has cup jointed second shrink pole (4), the lower extreme fixed mounting of second shrink pole (4) has second fixed ring axle (5), the bottom activity of second shrink pole (4) has cup jointed third shrink pole (6), the lower extreme fixed mounting of third shrink pole (6) has third fixed ring axle (7), the bottom fixedly connected with fixed block (8) of third shrink pole (6), hemostasis device (9) have been cup jointed in the bottom activity of fixed block (8).

2. The vertebroplasty bone drill of claim 1, wherein: hemostasis device (9) are including card axle (91), the fixed disc of bottom fixedly connected with (92) of card axle (91), the bottom fixedly connected with hemostasis piece (93) of fixed disc (92), card axle (91) and fixed block (8) fixed cup joint.

3. The vertebroplasty bone drill of claim 1, wherein: the shape of fixed block (8) is for falling L type and quantity be three, fixed block (8) are made for the soft piece of rubber and the bottom is seted up flutedly.

4. The vertebroplasty bone drill of claim 2, wherein: the hemostasis block (93) is made of a sponge block, and the thickness values of the two sides of the hemostasis block (93) are larger than that of the middle part of the hemostasis block.

5. The vertebroplasty bone drill of claim 1, wherein: the number of the first contraction rods (3), the second contraction rods (4) and the third contraction rods (6) is three, the first contraction rods, the second contraction rods and the third contraction rods are distributed on the outer side of the drill bit (1) at equal angles, and the diameter values of the first contraction rods (3), the second contraction rods (4) and the third contraction rods (6) are sequentially decreased progressively.

6. The vertebroplasty bone drill of claim 2, wherein: the shape of card axle (91) is the inverted convex type, the length value of card axle (91) is two-thirds of fixed block (8) length value.

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