CN208989031U

CN208989031U - A kind of bent osteotome

Info

Publication number: CN208989031U
Application number: CN201820177822.0U
Authority: CN
Inventors: 陶善亮; 刘陈邦
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-02-01
Filing date: 2018-02-01
Publication date: 2019-06-18
Anticipated expiration: 2028-02-01

Abstract

The utility model discloses a kind of bent osteotome, comprising: the first chisel bar, the first chisel bar receive external impact force；Second chisel bar, second chisel bar (2) is connected with chisel head or integrated molding；Chisel head, the chisel head is for contacting bone；The connecting pin of the first chisel bar and the second bar is one and the first chisel bar connects firmly or the first pivoted housing (101) of integrated molding；The end of second chisel bar (2) is equipped with the core (201) being deep into the first pivoted housing, first core can be along the axial movement of the first pivoted housing, the side wall of first pivoted housing is equipped with several and surrounds the first recess portion being axially distributed, first core (201) is equipped with the first protrusion (202) that can stick into the first recess portion, it is equipped with the first spring (203) for preventing the first protrusion from skidding off from the first recess portion between first pivoted housing and the first core, the first spacing head (204) of the first spring of limitation is equipped on the first core.

Description

A kind of bent osteotome

Technical field

The utility model relates to area of medical devices.

Background technique

Osteotome is common surgical medical tool in the long clinical practice of orthopaedics, and the osteotome clinically used at present is usually one The design of body formula, digs body and chisel head is integrally formed, and cuts bone tissue using chisel head during use.

Since there is certain deviation in the position of bone tissue, effect can be more preferable if osteotome is bending.And existing osteotome Mainly unitary design, and the type that is mainly in line, it is inconvenient to use in some cases.

In some cases, chisel head has been designed to bending, is conducive in this way using but this curved chisel head is not Perpendicular to the position of bone tissue, using effect is limited, sometimes up to less than the effect of anticipation.

Existing osteotome is all integral type simultaneously, and chisel head is easily damaged, but wants integral replacing, is not saved, and is needed frequently The osteotome that use different model, can only replace entire osteotome.

Utility model content

The purpose of this utility model is that: in view of the above problems, a kind of bent osteotome is provided, feature exists In including:

First chisel bar, the first chisel bar receive external impact force；

Second chisel bar, the second chisel bar is connected with chisel head or integrated molding, the connection refer to removable That unloads is fixedly connected；

Chisel head, the chisel head carry out the operation such as cutting for contacting bone；

The connecting pin of the described first chisel bar and the second bar be one and first dig bar connect firmly or integrated molding the One pivoted housing；The end of first chisel bar is equipped with the core being deep into the first pivoted housing, and the first core can be along the axis of the first pivoted housing To movement, the side wall of the first pivoted housing is equipped with several and surrounds the first recess portion being axially distributed, and the first core, which is equipped with, to be blocked Into the first protrusion of the first recess portion, being equipped between the first pivoted housing and the first core prevents the first protrusion from skidding off from the first recess portion First spring is equipped with the first spacing head of the first spring of limitation on the first core.

In the present invention, the first spacing head can be integrated molding, be also possible to dismountable connection type, this Second chisel bar of utility model and the first core can be integrated molding, be also possible to connect firmly, for example be threadedly coupled.It is using When the first core is mounted in the first pivoted housing, bending degree as required sticks into the first protrusion in the first recess portion, At this time spring is generally in compression or normal condition, and when needing to add bending degree, the first core is extracted, is turned It is dynamic, bending degree is adjusted, then the first protrusion is sticked into corresponding recess portion, the spring of the utility model mainly plays fixed and multiple The effect of position, prevents the axial movement between the first core and the first pivoted housing.

In some embodiments, the direct chisel head connection of the first core, the chisel head of such the utility model and the first chisel bar Between angle can be adjusted as needed, facilitate the progress of operation.It, can be with one simultaneously when specifically used First chisel bar is provided with the chisel head of multiple and different models, can according to need and facilitates the replacement of chisel head without replacing entire bone Chisel.When chisel head bad when, more preferable chisel head is also only needed.

In some other mode, for the utility model by way of bending twice, the mode structure that bends twice can be with It is designed as similar structure, in this way, just huge better flexibility, chisel head can be directly perpendicular in the process used Bone face is operated.

As for the connection type of the first recess portion and the first protrusion, it can be first protrusion, adjusted in different recess portions Section, also can be set multiple first protrusions, multiple first protrusions can be designed so that between the first core and the first pivoted housing Connection it is more close, it is excessive more to disperse the huge extruding force being subject to of single recess portion and protrusion, reduces damage problem.? In some preferred embodiments, each first recess portion is designed with corresponding first protrusion.

As a further improvement, the second chisel bar and the bent connection of chisel head, the chisel head and the second chisel One end of bar connection is equipped with the second pivoted housing, and the side wall of the second pivoted housing is equipped with several and surrounds the second recess portion being axially distributed, the The two chisel bar other ends are the second core, and the second core, which is equipped with, can stick into the second protrusion of the second recess portion, the second pivoted housing and the It is equipped with the second spring for preventing the first protrusion from skidding off from the first recess portion between two cores, limitation second is equipped on the second core Second spacing head of spring.

As a further improvement, at least one of first spacing head and the second spacing head are equipped with and can partially cover The firmly side wall of corresponding pivoted housing.It designs in this way, the stability between the first core and the second core can be increased, while placing the external world Pollution of the environment to spring.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the schematic diagram that the utility model first digs bar and the second chisel bar junction；

Fig. 3 is the schematic diagram that the utility model first digs bar and the second chisel bar junction；

Fig. 4 is the schematic diagram that the utility model first digs bar and the second chisel bar junction；

Fig. 5 is the schematic diagram that the utility model first digs bar and the second chisel bar junction；

Fig. 6 is the schematic diagram that the utility model second digs bar and chisel head junction；

Marked in the figure: the chisel bar of 1- first, the first pivoted housing of 101-, the first recess portion of 102-, the chisel bar of 2- second, first turn of 201- Core, the first protrusion 202-, the first spring of 203-, the first spacing head of 204-, the second core of 205-, the second protrusion 206-, 207- Two springs, the second spacing head of 208-, 3- chisel head, the second pivoted housing of 301-, the second recess portion of 302-.

Specific embodiment

With reference to the accompanying drawing, the utility model is described in detail.

A kind of specific embodiment 1: bent osteotome, comprising:

First chisel bar 1, the first chisel bar receive external impact force, and the external impact force received mainly passes through bone Hammer knocks, and the structure and existing difference of the first chisel bar are little,

Second chisel bar 2 and chisel head 3, the second chisel bar 2 is connected with chisel head or integrated molding, if the second chisel bar 2 and chisel head be integrated molding, in this manner, the bending of entire osteotome is primary, but in order to more improve flexibility, assigns Effect that osteotome is repeatedly bent is given as twice, this when can be by the second chisel bar and chisel head using same bent side Formula, the rotation axis of the two bending are usually in the same direction, however, you can also not in the same direction, with specific reference to osteotome Use demand determines.For chisel head for contacting bone, the chisel head is usually existing technology, and distinctive points essentially consist in and the Two chisel bars are connected by bent mode.

The bending structure of the utility model needs to need to reach direction under normal conditions more using a kind of specific form A feature angle bending and stablized, in order to reach this effect, the first chisel bar 1 of the present embodiment and second dig bar 2 The first pivoted housing 101 that connecting pin is one and the first chisel bar connects firmly；The end of second chisel bar 2, which is equipped with, to be deep into the first pivoted housing First core 201, the first core can be rotated along the axial direction of the first pivoted housing, and the side wall of the first pivoted housing 101 is equipped with several Around the first recess portion 102 being axially distributed, the first core 201, which is equipped with, can stick into the first protrusion 202 of the first recess portion, and first The first spring 203 for preventing the first protrusion from skidding off from the first recess portion is equipped between pivoted housing and the first core, on the first core The first spacing head 204 equipped with the first spring of limitation.

First core 201 is equipped with the first protrusion 202 of more than one and the first recesses fit, is to fix the in purpose The radial position of one core 201 and the first pivoted housing 101, places it and mutually rotates, and the effect of spring is to can oneself for it It is dynamic to reset, do not need additional fixation device.

When the utility model uses, when needing to rotate, it will be pulled out in the first core and the first pivoted housing (purpose is to remove the first protrusion in the first recess portion), the relative position of the first core and the first pivoted housing is then rotated, to Suitable angle is rotated, the first protrusion is being sticked into corresponding first recess portion, under the action of the spring, the first recess portion and first Protrusion is kept fixed.Above embodiment, it is ensured that rotation can be facilitated and do not need additional fixation device, it is solid simultaneously Qualitative energy is good, especially when the first chisel bar receives bone hammer impact force, is able to maintain between the first chisel bar and the second chisel bar It is relatively fixed.

As described above, in preferred embodiments, by the way of repeatedly bending, especially twice bended, this In the case of, chisel bar 2 and the bent connection of chisel head 3, one end that the chisel head is connected with the second chisel bar are equipped with the second pivoted housing 301, the side wall of the second pivoted housing is equipped with several and surrounds the second recess portion 302 being axially distributed, and the second chisel bar other end is second Core 205, the second core are equipped with the second protrusion 206 that can stick into the second recess portion, set between the second pivoted housing and the second core There is the second spring 207 for preventing the first protrusion from skidding off from the first recess portion, the of limitation second spring is equipped on the second core Two spacing heads 208.

Its flexibility ratio is more improved using a variety of bending modes, especially in some cases, it is ensured that the first chisel Bar and chisel head in one direction, the power of such bone hammer can adequately clamp in the effect on bone, improving its osteotome.

Need that the power of bone hammer is accurately transmitted to end in osteotome, achieve the effect that in the utility model it is bent, Must make the material of osteotome has high rigidity and bending strength yield strength, and in a preferred embodiment, this is practical new Type discloses the Cu-base composites that a kind of intensity is big, rigidity is big, specifically uses 99.99% cathode copper for raw material, by vacuum Melting, alloying element is added in melting process, secondly by ingot casting and post-processing molding, wherein alloying element include zinc, cobalt, Nickel, gallium, silicon, lanthanum element, specifically 100 parts of the following copper of parts by weight, 2 parts of zinc, 2 parts of cobalt, 2 parts of nickel, 1 part of gallium, 5 parts of silicon, lanthanum 0.1 Part, the bending strength of the copper alloy prepared in this manner reaches 1300Mpa or more, and hardness reaches 400HV or more.

Claims

1. a kind of bent osteotome characterized by comprising

First chisel bar (1), the first chisel bar receive external impact force；

Second chisel bar (2), second chisel bar (2) is connected with chisel head or integrated molding；

Chisel head (3), the chisel head is for contacting bone；

The connecting pin of the described first chisel bar and the second bar is that one and first dig bar and connect firmly or first turn of integrated molding It covers (101)；The end of second chisel bar (2) is equipped with the core (201) being deep into the first pivoted housing, and the first core can be along first The axial movement of pivoted housing, the side wall of the first pivoted housing are equipped with several and surround the first recess portion being axially distributed, the first core (201) It is equipped with the first protrusion (202) that can stick into the first recess portion, being equipped between the first pivoted housing and the first core prevents the first protrusion The first spring (203) skidded off from the first recess portion is equipped with the first spacing head of the first spring of limitation on the first core (204).

2. bent osteotome according to claim 1, which is characterized in that first core (201) is equipped with one A above the first protrusion (202) with the first recesses fit.

3. bent osteotome according to claim 2, which is characterized in that each of described first recess portion is designed with one Corresponding first protrusion (202).

4. bent osteotome according to claim 1-3, which is characterized in that described second chisel bar (2) with The bent connection of chisel head (3), one end that the chisel head is connected with the second chisel bar are equipped with the second pivoted housing (301), the second pivoted housing Side wall be equipped with several and surround the second recess portion (302) for being axially distributed, the second chisel bar other end is the second core (205), Second core is equipped with the second protrusion (206) that can stick into the second recess portion, and being equipped between the second pivoted housing and the second core prevents The second spring (207) that first protrusion is skidded off from the first recess portion is equipped with the second limit of limitation second spring on the second core Potential head (208).

5. bent osteotome according to claim 3, which is characterized in that first spacing head and the second spacing head At least one be equipped with and can partially entangle the side wall of corresponding pivoted housing.