CN208435718U - A kind of expansion marrow reamer and hip joint anterior approach instrument packet - Google Patents
A kind of expansion marrow reamer and hip joint anterior approach instrument packet Download PDFInfo
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- CN208435718U CN208435718U CN201721721207.3U CN201721721207U CN208435718U CN 208435718 U CN208435718 U CN 208435718U CN 201721721207 U CN201721721207 U CN 201721721207U CN 208435718 U CN208435718 U CN 208435718U
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Abstract
The utility model provides a kind of expansion marrow reamer and hip joint anterior approach instrument packet, and expanding marrow reamer includes blade, shank and interconnecting piece.Blade includes the first noumenon and the first connecting pin positioned at the first noumenon one end, and the first noumenon can extend into femoral bone cavitas medullaris, and the periphery of the first noumenon has multiple expansion marrow slots.Shank includes the second ontology and the second connection end positioned at second ontology one end, and the other end of the second ontology can be connect with power mechanism.Wherein, the first connecting pin and second connection end enable blade and shank relative rotation with the rotatable connection of interconnecting piece.Compared with existing stock class integral type expands marrow reamer, the angle between the blade and shank of the expansion marrow reamer of the utility model is adjustable, so that surgical procedure is convenient, saves operating time.
Description
Technical field
The utility model relates to Medical treatment devices used in the surgical procedure of medical instruments field, especially hip replacement
Tool.
Background technique
In the surgical procedure of hip replacement, different operative approaches can be selected according to the state of an illness of patient.In order to reduce
Operation wound be conducive to patient's post-operative recovery, operation opening (dissection) be intended to out it is small as far as possible, but be open it is too small, can make to perform the operation
It is influenced by space, position, angle, increases operating difficulty and operating time.In order to solve this contradiction, so that facilitating operation is grasped
To make, save operating time, occur expansion marrow reamer on the market, is stock class instrument, the both ends sectional area size of the body of rod is different,
Pulp cavity is protruded into the lesser one end of sectional area, the other end for expanding marrow reamer can be connected with power mechanism, such as power electric drill, be realized
Expand marrow.
However, existing expansion marrow reamer has the disadvantage that
Existing expansion marrow reamer is stock class instrument, and when carrying out expansion marrow, shank can be with human body interference effect surgical procedure；It is special
It is not when expanding the rear handle connection power electric drill of marrow reamer, the influence to operation will be bigger.
Therefore, it is necessary to improve to existing expansion marrow reamer, so that surgical procedure is convenient, operating time is saved.
Utility model content
One main purpose of the utility model is to overcome at least one defect of the above-mentioned prior art, provides a kind of expansion
Marrow reamer and hip joint anterior approach instrument packet save operating time so that surgical procedure is convenient.
To reach above-mentioned purpose, the utility model provides a kind of expansion marrow reamer comprising blade, shank and interconnecting piece.
Blade includes the first noumenon and the first connecting pin positioned at the first noumenon one end, and the first noumenon can extend into femur marrow
It is intracavitary, and the periphery of the first noumenon has multiple expansion marrow slots.
Shank includes the second ontology and the second connection end positioned at second ontology one end, and the other end of the second ontology can be with
Power mechanism connection.
Wherein, the first connecting pin and second connection end enable blade and shank with the rotatable connection of interconnecting piece
Relative rotation.
According to an embodiment, interconnecting piece is double universal coupling.
According to an embodiment, the range of angle is between 100 degree -180 degree between blade and shank.
According to an embodiment, expanding marrow reamer further includes elastic mechanism, surrounds interconnecting piece, the first connecting pin and the second connection
End, elastic mechanism in the raw under, angle is 180 degree between blade and shank, linearly；When being pressed from both sides between blade and shank
When angle is less than 180 degree, elastic mechanism applies elastic force to blade and shank.
According to an embodiment, elastic mechanism includes two sections of two-way twisting resistance springs and is connected to two sections of two-way twisting resistance springs
Between elastic joint part, two sections of two-way twisting resistance springs surround the first connecting pin and second connection end, elastic joint part respectively
Surround interconnecting piece.
According to an embodiment, the first noumenon periphery is recessed with first row and cuts slot, and first row cuts slot along the axis of the first noumenon
Line is set to the first noumenon.
According to an embodiment, the first noumenon periphery is recessed with second row and cuts slot, and first row is cut slot and surrounded along the hand of spiral
The periphery of the first noumenon is arranged.
According to an embodiment, the first noumenon periphery is recessed with that first row cuts slot and second row cuts slot, first row cut slot along
The axis of the first noumenon is set to the first noumenon, after first row cuts Slot shaping, around the periphery of the first noumenon along hand of spiral shape
Slot is cut at second row.
According to an embodiment, the quantity that first row cuts slot is multiple, and is uniformly distributed, and it is equidistant along axis that second row cuts slot
Spiral distribution, and it is 1-3mm that second row, which cuts the radius of slot,.
On the other hand the utility model also provides a kind of hip joint anterior approach instrument packet comprising drag hook hits handle device, marrow
Chamber files handle, pulp cavity opener and above-mentioned expansion marrow reamer.
The beneficial effect of the utility model compared to the prior art is: expanding marrow reamer phase with existing stock class integral type
Than the angle between the blade and shank of the expansion marrow reamer of the utility model is adjustable, so that surgical procedure is convenient, saves hand
The art time.The utility model is that the minimally invasive of operation provides instrument guarantee, and clinical feedback effects are good.
Detailed description of the invention
Consider the detailed description of the following preferred embodiment to the utility model in conjunction with the accompanying drawings, the utility model it is each
Kind target, feature and advantage will become apparent.Attached drawing is only the exemplary diagram of the utility model, is not necessarily
It is drawn to scale.In the accompanying drawings, same appended drawing reference always shows same or similar component.Wherein:
Fig. 1 is the overall structure diagram of the expansion marrow reamer of the utility model.
Fig. 2 is the schematic diagram in bending state of the expansion marrow reamer of the utility model.
Fig. 3 is the schematic diagram in multi-motion state of the expansion marrow reamer of the utility model.
Fig. 4 is the schematic diagram of the blade of the expansion marrow reamer of the utility model.
Fig. 5 is the schematic diagram of the shank of the expansion marrow reamer of the utility model.
Fig. 6 is the schematic diagram of the elastic mechanism of the expansion marrow reamer of the utility model.
Specific embodiment
Example embodiment is described more fully with reference to the drawings.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to embodiment set forth herein；On the contrary, thesing embodiments are provided so that this is practical new
The design of example embodiment more comprehensively and completely, and is comprehensively communicated to those skilled in the art by type.It is identical in figure
Appended drawing reference indicates same or similar structure, thus the detailed description that will omit them.
The term of relativity, such as " lower " or " bottom " and " higher " or " top " may be used in embodiment, to retouch
State relativeness of the component for another component of icon.It is appreciated that, if the device overturning of icon made thereon
Lower reverse, then the component described in " lower " side will be as the component in " higher " side.In addition, when certain layer in other layers or
When substrate "upper", it is possible to refer to that " direct " on other layers or substrate, or refers to that certain layer on other layers or substrate, or refers to other
The other layers of sandwiched between layer or substrate.
The utility model provides a kind of expansion marrow reamer, is used to carry out expansion marrow to femoral bone cavitas medullaris.Expanding marrow reamer can be used as hip
One of joint anterior approach instrument packet tool, with drag hook, hit handle device and Myelocavity file handle pulp cavity opener is used in conjunction with, it is complete
At hip joint anterior approach device.
Hereinafter, the structure of the expansion marrow reamer of the utility model is described in detail.
As shown in Figure 1, 2, 3, the expansion marrow reamer of the utility model includes blade 10, shank 20 and interconnecting piece 30.
Blade 10 includes the first noumenon 11 and the first connecting pin 12 positioned at 11 one end of the first noumenon, and the first noumenon 11 can
It protrudes into femoral bone cavitas medullaris, and the periphery of the first noumenon 11 has multiple expansion marrow slots.
Shank 20 include the second ontology 21 and the second connection end 22 positioned at 21 one end of the second ontology, the second ontology 21 it is another
One end can be connect with power mechanism (not shown).
Wherein, the first connecting pin 12 and second connection end 22 with the rotatable connection of interconnecting piece 30 so that 10 He of blade
Shank 20 being capable of relative rotation.
The utility model is will to expand marrow reamer to be divided into 20 two parts of blade 10 and shank, passes through interconnecting piece 30 among the two
It is attached, enables 20 relative rotation of blade 10 and shank.In surgical procedure, holds shank 20 and rotate, it being capable of basis
It needs to adjust the angle between shank 20 and blade 10, shank 20 can be connect with power mechanism, the rotation of blade 10 can be controlled,
And the angle between shank 20 and blade 10 can be adjusted while rotating.Whole process, reamer expand the shank 20 and human body of marrow
It does not interfere, and does not influence the use of power mechanism.
Compared with existing stock class integral type expands marrow reamer, the blade 10 and shank 20 of the expansion marrow reamer of the utility model
Between angle it is adjustable so that surgical procedure is convenient, save operating time.The utility model is that the minimally invasive of operation provides
Instrument guarantee, clinical feedback effects are good.
In the present embodiment, interconnecting piece 30 is double universal coupling, and blade 10 and shank 20 is allowed to have bigger curvature.
The range of angle is between 100 degree -180 degree between blade 10 and shank 20.Such as shown in Fig. 2, between blade 10 and shank 20
Angle be about 100 degree.
Fig. 3 shows a variety of change locations, can be in angle, interconnecting piece 30 and the between interconnecting piece 30 and the first connecting pin 12
It can be in angle between two connecting pins 22.Therefore, the angle between blade 10 and shank 20 can flexible modulation, avoid and human body occur
Interference, influences surgical procedure.
As a shown in Figure 6, expanding marrow reamer may also include elastic mechanism 40, surround interconnecting piece 30, the first connecting pin 12 and
Second connection end 22 (elastic mechanism, which is not shown, in Fig. 1 surrounds the first connecting pin and interconnecting piece).As shown in Figure 1, blade 10 with
Angle is 180 degree between shank 20, i.e., blade 10 and shank 20 linearly, at this point, elastic mechanism 40 in the raw under.When
When angle is less than 180 degree between blade 10 and shank 20, that is, relative rotation occurs for the two, and when there is angle, elastic mechanism 40 is right
The blade 10 and shank 20 surrounded applies elastic force, so that blade 10 and shank 20 have the trend straightened.Elastic mechanism 40
It is arranged and also provides constraint to the activity relatively of blade 10 and shank 20, prevents the excessively activity of blade 10 from losing position.Also, pass through
Blade 10 and shank 20 are connected by interconnecting piece 30 and elastic mechanism 40, improve the whole of structure while guaranteeing flexibility
Body.
In the present embodiment, elastic mechanism 40 is to be interrupted double flat springs.Specifically, as shown in fig. 6, it may include two sections double
To twisting resistance spring 41 and the elastic joint part 42 being connected between two sections of two-way twisting resistance springs 41, two sections of two-way twisting resistance bullets
Spring 41 surrounds the first connecting pin 12 and second connection end 22 respectively, and elastic joint part 42 surrounds interconnecting piece 30.Therefore, elastic mechanism
The two-way twisting resistance spring 41 of two sections of 40 provides elasticity to the first connecting pin 12 and second connection end 22 respectively, guarantees two shaft couplings
Bent-segment degree is essentially identical, provides constraint while guaranteeing flexibility.
In the present embodiment, as shown in Fig. 1,4, the first noumenon 11 is tapered, can be approximate with femoral bone cavitas medullaris vertebra degree.First
11 periphery of body is recessed with that first row cuts slot 13 and second row cuts slot 14, and first row is cut slot 13 and is set to along the axis of the first noumenon 11
The first noumenon 11 after first row cuts the molding of slot 13, forms second row along the hand of spiral around the periphery of the first noumenon 11 and cuts slot
14。
The quantity that first row cuts slot 13 can be multiple, and be uniformly distributed, and second row cuts slot 14 along the equidistant spiral of axis point
Cloth, and it is 1-3mm that second row, which cuts the radius of slot 14,.In the present embodiment, the quantity that first row cuts slot 13 is 5, and second row cuts slot
14 be three helixes, radius 2mm, so that in terms of end face, the substantially pentagon of the first noumenon 11.
Axial first row cuts slot 13 and spiral helicine second row cuts slot 14 and facilitates chip removal and cooling, also, spiral helicine
Second row, which cuts slot 14, can also reduce the contact area of reamer blade and sclerotin, reduce cutting force.
Form, the quantity that row cuts slot are without being limited thereto.For example, axial first row, which can only be arranged, cuts slot 13, can also only be arranged
Spiral helicine second row cuts slot 14.The quantity that first row cuts slot 13 can be 3.
In conclusion compared with existing stock class integral type expands marrow reamer, the blade of the expansion marrow reamer of the utility model
Angle between shank is adjustable, so that surgical procedure is convenient, saves operating time.The utility model is the minimally invasive of operation
Instrument guarantee is provided, clinical feedback effects are good.
Although exemplary embodiment describes the utility model with reference to several, it is to be understood that, term used is explanation
With term exemplary, and not restrictive.Since the utility model can be embodied in a variety of forms without departing from practical new
The spirit or essence of type, it should therefore be appreciated that above-described embodiment is not limited to any of the foregoing details, and should be in appended claims
Defined by widely explain in spirit and scope, therefore fall into whole change and modification in claim or its equivalent scope
It all should be appended claims to be covered.
Claims (10)
1. a kind of expansion marrow reamer, for carrying out expansion marrow to femoral bone cavitas medullaris, characterized in that it comprises:
Blade, including the first noumenon and positioned at first connecting pin of the first noumenon one end, the first noumenon can extend into femoral bone cavitas medullaris
It is interior, and the periphery of the first noumenon has multiple expansion marrow slots；
Shank, the second connection end including the second ontology and positioned at second ontology one end, the other end of the second ontology can with it is dynamic
Force mechanisms connection；And
Interconnecting piece, the first connecting pin and second connection end with the rotatable connection of interconnecting piece, enable blade and shank phase
To rotation.
2. expanding marrow reamer as described in claim 1, which is characterized in that interconnecting piece is double universal coupling.
3. as claimed in claim 2 expand marrow reamer, which is characterized in that between blade and shank the range of angle 100 degree-
Between 180 degree.
4. expanding marrow reamer as described in claim 1, which is characterized in that expanding marrow reamer further includes elastic mechanism, surrounds connection
Portion, the first connecting pin and second connection end, elastic mechanism in the raw under, angle is 180 degree between blade and shank, is in
Straight line；When angle is less than 180 degree between blade and shank, elastic mechanism applies elastic force to blade and shank.
5. expanding marrow reamer as claimed in claim 4, which is characterized in that elastic mechanism includes two sections of two-way twisting resistance springs and company
The elastic joint part being connected between two sections of two-way twisting resistance springs, two sections of two-way twisting resistance springs surround respectively the first connecting pin and
Second connection end, elastic joint part surround interconnecting piece.
6. expanding marrow reamer as described in claim 1, which is characterized in that the first noumenon periphery is recessed with first row and cuts slot, and first
Row cuts slot and is set to the first noumenon along the axis of the first noumenon.
7. expanding marrow reamer as described in claim 1, which is characterized in that the first noumenon periphery is recessed with second row and cuts slot, and first
Row cuts slot and is arranged along the hand of spiral around the periphery of the first noumenon.
8. expanding marrow reamer as described in claim 1, which is characterized in that the first noumenon periphery is recessed with first row and cuts slot and second
Row cuts slot, and first row cuts slot and is set to the first noumenon along the axis of the first noumenon, after first row cuts Slot shaping, surrounds the first noumenon
Periphery along the hand of spiral formed second row cut slot.
9. expanding marrow reamer as claimed in claim 8, which is characterized in that the quantity that first row cuts slot is multiple, and is uniformly distributed,
Second row cuts slot along the equidistant Spiral distribution of axis, and it is 1-3mm that second row, which cuts the radius of slot,.
10. a kind of hip joint anterior approach instrument packet, which is characterized in that it includes drag hook, hits handle device, Myelocavity file handle, pulp cavity
Opener and as claimed in any one of claims 1-9 wherein expansion marrow reamer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721721207.3U CN208435718U (en) | 2017-12-11 | 2017-12-11 | A kind of expansion marrow reamer and hip joint anterior approach instrument packet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721721207.3U CN208435718U (en) | 2017-12-11 | 2017-12-11 | A kind of expansion marrow reamer and hip joint anterior approach instrument packet |
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| Publication Number | Publication Date |
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| CN208435718U true CN208435718U (en) | 2019-01-29 |
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| CN201721721207.3U Active CN208435718U (en) | 2017-12-11 | 2017-12-11 | A kind of expansion marrow reamer and hip joint anterior approach instrument packet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109893201A (en) * | 2017-12-11 | 2019-06-18 | 北京纳通医学科技研究院有限公司 | A kind of expansion marrow reamer and hip joint anterior approach instrument packet |
-
2017
- 2017-12-11 CN CN201721721207.3U patent/CN208435718U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109893201A (en) * | 2017-12-11 | 2019-06-18 | 北京纳通医学科技研究院有限公司 | A kind of expansion marrow reamer and hip joint anterior approach instrument packet |
| CN109893201B (en) * | 2017-12-11 | 2024-04-09 | 北京纳通医学科技研究院有限公司 | Reamer for reaming marrow and hip joint anterior surgical instrument package |
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