CN110025340A - A kind of knee joint dilator - Google Patents
A kind of knee joint dilator Download PDFInfo
- Publication number
- CN110025340A CN110025340A CN201910209785.6A CN201910209785A CN110025340A CN 110025340 A CN110025340 A CN 110025340A CN 201910209785 A CN201910209785 A CN 201910209785A CN 110025340 A CN110025340 A CN 110025340A
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- China
- Prior art keywords
- axis
- knee joint
- guide sleeve
- screw thread
- rotary sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/025—Joint distractors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/06—Measuring instruments not otherwise provided for
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/025—Joint distractors
- A61B2017/0268—Joint distractors for the knee
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/06—Measuring instruments not otherwise provided for
- A61B2090/061—Measuring instruments not otherwise provided for for measuring dimensions, e.g. length
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/06—Measuring instruments not otherwise provided for
- A61B2090/064—Measuring instruments not otherwise provided for for measuring force, pressure or mechanical tension
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Pathology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Surgical Instruments (AREA)
Abstract
The present invention relates to the field of medical instrument technology, especially a kind of knee joint dilator, guide sleeve including left and right each one, it is respectively arranged with an axis in guide sleeve, rotary sleeve is provided between two guide sleeves, outer segment and the guide sleeve cooperation of axis can only be axially moved, inner segment is provided with the screw-internal thread fit of external screw thread and rotary sleeve, the external screw thread of two axis is oppositely oriented, and the outer end of axis is provided with distraction forcep, is provided on guide sleeve for support frame that is hand-held or connecting with external fixation device.Knee joint dilator of the invention struts knee joint using screw thread rotation drive shaft, and two distraction forceps move in parallel always, will not squeeze the contact position in bone face too deep；It can strut and unilateral can also strut simultaneously with both sides；It can directly be read when operation and strut distance and strut pressure.
Description
Technical field
The present invention relates to the field of medical instrument technology, especially a kind of knee joint dilator.
Background technique
Total knee arthroplasty (Total Knee Arthroplasty, TKA) has become advanced stage degeneration Bones and joints
One of surgical intervention mode of the diseases such as inflammation, rheumatoid arthritis, ankylosing spondylitis.
In existing technology, space distraction device is used for the inspection that struts of bone and bone junction, common space distraction
Device, which generally only has, struts function, is mostly fixed angle with bone contact site, is easy to produce gap, causes measurement inaccurate, is easy
There is slip phenomenon, affects procedure efficiency.
General dilator does not have measurement and struts range capability, or has the function of that measurement struts spacing but measurement result not
Intuitively；The patent No. thus: CN201810241696.5 discloses " a kind of knee space dilator ", the technical solution of use
Are as follows: including left clamp handle, middle clamp handle and right clamp handle, fluted, the middle clamp handle is arranged in the junction of the left clamp handle and right clamp handle
It is embedded in right clamp handle, right clamp handle is embedded in the groove of left clamp handle；The front end of the left clamp handle and middle clamp handle is provided with disk,
Disk is in flexible movable angle with the plane at clamp handle riveting by rivet, disk.Angle can be directly displayed, but angle is not
It is distance, doctor, which needs more intuitively to see, struts distance, while clamp type structure, when strutting, two binding clips are not parallel, inclination
Strut knee joint, there is impression in the contact position that will lead to two binding clips and bone face, causes slight bone defect.
Summary of the invention
It can not be directly displayed the purpose of the present invention is to solve existing knee joint dilator and strut distance, and strutted
When binding clip not parallel the problem of leading to slight bone defect, and provide a kind of knee joint dilator.
The technical solution adopted by the present invention are as follows: a kind of knee joint dilator, the guide sleeve including left and right each one, in guide sleeve
Be respectively arranged with an axis, be provided with rotatable rotary sleeve between two guide sleeves, being divided into for axis is two sections inside and outside, outer segment with lead
It can only be axially moved to set cooperation, inner segment is provided with the screw-internal thread fit of external screw thread and rotary sleeve, the external screw thread rotation direction of two axis
On the contrary, the internal screw thread of rotary sleeve is corresponding to be divided into left and right two sections and oppositely oriented, the outer end of axis is provided with for strutting leg
The distraction forcep of bone is provided on guide sleeve for support frame that is hand-held or connecting with external fixation device.
Further, the periphery circumferential surface of the rotary sleeve is hexahedron, is provided with lever on hexahedron to help doctor to revolve
Turn, or hexahedron is blocked to rotate rotary sleeve by open-end wrench.
Further, the rotary sleeve includes left-handed pivoted housing and dextrorotation pivoted housing, and left-handed pivoted housing and dextrorotation pivoted housing opposite can turn
It is dynamic, positive internal screw thread is respectively set in left-handed pivoted housing and dextrorotation pivoted housing and anti-internal screw thread is corresponding with axis.
Further, the outer segment of the axis and guide sleeve spline fitted.
Further, it is provided with ring-shaped step at the guide sleeve and rotary sleeve cooperation, makes guide sleeve and rotary sleeve can only
Enough rotations can not radial-play.
Further, the guide sleeve is detachably connected by connecting rod and support frame.
Further, inside and outside two sections of the axis, outer segment diameter are greater than inner segment outer diameter.
Further, the extension elongation of axis can directly be read by scale being provided on the axis, and the extension elongation of two axis adds
The thickness of upper distraction forcep is exactly the distracted distance of thigh bone.
Further, the dead-center position of the axis high scale is provided with block, and axis is made to be at best able to return to zero in retraction
Point position.
Further, it is provided with pressure sensor on the axis, it can be by pressure transmission to the terminal of doctor.
Beneficial effects of the present invention:
1, knee joint dilator of the invention struts knee joint using screw thread rotation drive shaft, and two distraction forceps are moved always in parallel
It is dynamic, the contact position in bone face will not be squeezed too deep；
2, it can strut and unilateral can also strut simultaneously with both sides, it is easy to operate controllable；
3, it can directly be read when operating and strut distance and strut pressure, it is convenient and reliable；
4, entire dilator is fixed on operating table, and doctor can loose one's grip after strutting not to be had to help dilator always, saves people
While power, it will not perform the operation because of manually helping dilator to generate wobble effects always.
Detailed description of the invention
Fig. 1 is main view of the invention；
Fig. 2 is the A-A cross-sectional view of Fig. 1；
Fig. 3 is top view of the invention；
Fig. 4 is the main view of another embodiment of the present invention；
Fig. 5 is the B-B cross-sectional view of Fig. 4；
Fig. 6 is the top view of another embodiment of the present invention.
In figure: 1- guide sleeve, 2- axis, 3- rotary sleeve, the left-handed pivoted housing of 301-, 302- dextrorotation pivoted housing, 4- distraction forcep, 5- support
Frame, 6- lever, 7- connecting rod.
Specific embodiment
Following further describes the present invention with reference to the drawings.
Specific embodiment 1.
As shown in Figures 1 to 3, a kind of knee joint dilator, the guide sleeve 1 including left and right each one are respectively set in guide sleeve 1
There is an axis 2, rotatable rotary sleeve 3 is provided between two guide sleeves 1, the periphery circumferential surface of rotary sleeve 3 is hexahedron, six faces
Lever 6 is provided on body to help doctor to rotate；Being divided into for axis 2 is two sections inside and outside, and outer segment can only be transported axially with the cooperation of guide sleeve 1
It is dynamic, the outer segment and 1 spline fitted of guide sleeve of axis 2；Inner segment is provided with the screw-internal thread fit of external screw thread Yu rotary sleeve 3, two axis 2
External screw thread is oppositely oriented, and the internal screw thread of rotary sleeve 3 is corresponding to be divided into two sections of left and right and oppositely oriented, and rotary sleeve 3 includes a left side
Rotary sleeve 301 and dextrorotation pivoted housing 302, left-handed pivoted housing 301 and dextrorotation pivoted housing 302 can relatively rotate, left-handed pivoted housing 301 and right rotation
Positive internal screw thread is respectively set in set 302 and anti-internal screw thread is corresponding with axis 2；The outer end of axis 2 is provided with for strutting strutting for thigh bone
4 are clamped, the support frame 5 for connecting with external fixation device is provided on guide sleeve 1, the height and front-rear position of support frame 5 are equal
It is adjustable, facilitate doctor to say that dilator is adjusted to suitable position in operation, common machine in the support frame 5 and Medical Devices
Tool arm etc. is similar, belongs to the prior art and is no longer described in detail.
Distraction forcep 4 is as shown in the figure L shape, and the front end of dilator is reached from the outer end of axis 2, latter two right distraction forcep 4 exists
Front end is together with and extends downwardly jaw, and the jaw extended downwardly struts thigh bone for entering among knee.
Distance is strutted in order to facilitate doctor's observation, scale is provided on axis 2 can directly read the extension elongation of axis 2, and two
The extension elongation of axis 2 is exactly the distracted distance of thigh bone plus the thickness of distraction forcep 4, and the dead-center position of 2 high scale of axis is provided with gear
Block makes axis 2 be at best able to return to dead-center position in retraction.
Understand in order to facilitate doctor and strut pressure, is provided with pressure sensor on axis 2, it can be by pressure transmission to the end of doctor
End, doctor can be immediately seen by terminal such as monitor and strut pressure.
It in order to facilitate the installation of and dismantles, is provided with ring-shaped step at 3 cooperation of guide sleeve 1 and rotary sleeve, make guide sleeve 1 and rotation
Pivoted housing 3 be merely able to rotation can not radial-play, guide sleeve 1 is detachably connected by connecting rod 7 with support frame 5.Axis 2 is interior simultaneously
Outer two sections, outer segment diameter is greater than inner segment outer diameter.It is existing by after two clamping rotary sleeves 3 of guide sleeves 1 when installation, pass through connecting rod 7 and branch
Support 5 links together, and axis 2 is then inserted into rotary sleeve 3 from guide sleeve 1, rotation rotary sleeve 3 makes axis 2 to inside contracting, completes peace
Dress, when needing to dismantle cleaning after the completion of operation, above-mentioned steps are turned around i.e. removable.
The knee joint dilator course of work of the invention, when operation, adjusting support frame 5 closes distraction forcep alignment knee first
Section, then rotating rotary sleeve 3 simultaneously keeps two axis 2 protruding simultaneously, can also be according to doctor's so that knee joint be strutted
It needs, individually rotates a rotary sleeve 3, so that an individual axis 2 is stretched out or is bounced back, strut distance to adjust；What is adjusted is same
When, doctor can read the extension elongation of axis 2 directly on axis 2, and the extension elongation of two axis 2 is exactly plus the thickness of distraction forcep 4
The distracted distance of thigh bone, and can see in real time on a monitor and strut pressure.
Specific embodiment 2.
As shown in Figs. 4-6, a kind of knee joint dilator, the guide sleeve 1 including left and right each one are respectively set in guide sleeve 1
There is an axis 2, rotatable rotary sleeve 3 is provided between two guide sleeves 1, the periphery circumferential surface of rotary sleeve 3 is hexahedron, directly
Rotary sleeve 3 can be rotated using the equipment of open-end wrench etc；Being divided into for axis 2 is two sections inside and outside, and outer segment and the cooperation of guide sleeve 1 are only
It can be axially moved, the outer segment and 1 spline fitted of guide sleeve of axis 2；Inner segment is provided with the screw-internal thread fit of external screw thread Yu rotary sleeve 3,
The external screw thread of two axis 2 is oppositely oriented, and the internal screw thread of rotary sleeve 3 is corresponding to be divided into two sections of left and right and oppositely oriented, use
When the common tool rotation rotary sleeve 3 such as open-end wrench can be so that two axis 2 be overhanging simultaneously or retraction；The outer end of axis 2 is set
It is equipped with the distraction forcep 4 for strutting thigh bone, is provided on guide sleeve 1 for hand-held support frame 5.
Other features are identical as specific embodiment 1 to be no longer described in detail.
In other embodiments, the outer segment of axis 2 and guide sleeve 1 make 2 guide sleeve of axis by flat key or other guide frames
1 cooperation can only be axially moved.
In order to guarantee the safety and sanitation of dilator, dilator is made of medical stainless steel.
Specific embodiment is to further explanation of the invention rather than limits, and is existed for those of ordinary skills
Further transformation is done to structure in the case where not departing from substantive content of the present invention, and all these transformation all should belong to institute of the present invention
Attached scope of protection of the claims.
Claims (10)
1. a kind of knee joint dilator, it is characterised in that: the guide sleeve including left and right each one is respectively arranged with one in guide sleeve
Axis is provided with rotatable rotary sleeve between two guide sleeves, and being divided into for axis is two sections inside and outside, and outer segment and guide sleeve cooperation can only axis
To movement, inner segment is provided with the screw-internal thread fit of external screw thread and rotary sleeve, and the external screw thread of two axis is oppositely oriented, rotary sleeve it is interior
Screw thread is corresponding to be divided into two sections of left and right and oppositely oriented, and the outer end of axis is provided with the distraction forcep for strutting thigh bone, guiding
It puts on and is provided with for support frame that is hand-held or being connect with external fixation device.
2. a kind of knee joint dilator according to claim 1, it is characterised in that: the periphery circumferential surface of the rotary sleeve is six
Face body is provided with lever to help doctor to rotate on hexahedron.
3. a kind of knee joint dilator according to claim 1, it is characterised in that: the rotary sleeve include left-handed pivoted housing and
Dextrorotation pivoted housing, left-handed pivoted housing and dextrorotation pivoted housing can relatively rotate, be respectively set in left-handed pivoted housing and dextrorotation pivoted housing positive internal screw thread and
Anti- internal screw thread is corresponding with axis.
4. a kind of knee joint dilator according to claim 1, it is characterised in that: the outer segment and guide sleeve spline of the axis
Cooperation.
5. a kind of knee joint dilator according to claim 1, it is characterised in that: at the guide sleeve and rotary sleeve cooperation
It is provided with ring-shaped step, so that guide sleeve and rotary sleeve is merely able to rotation can not radial-play.
6. a kind of knee joint dilator according to claim 6, it is characterised in that: the guide sleeve passes through connecting rod and support
Frame is detachably connected.
7. a kind of knee joint dilator according to claim 1, it is characterised in that: inside and outside two sections of the axis, outer segment is straight
Diameter is greater than inner segment outer diameter.
8. a kind of knee joint dilator according to claim 1, it is characterised in that: being provided with scale on the axis can be direct
The extension elongation of axis is read, the extension elongation of two axis is exactly the distracted distance of thigh bone plus the thickness of distraction forcep.
9. a kind of knee joint dilator according to claim 8, it is characterised in that: the dead-center position of the axis high scale is set
It is equipped with block, axis is made to be at best able to return to dead-center position in retraction.
10. a kind of knee joint dilator according to claim 1, it is characterised in that: be provided with pressure sensing on the axis
Device, can be by pressure transmission to the terminal of doctor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910209785.6A CN110025340A (en) | 2019-03-19 | 2019-03-19 | A kind of knee joint dilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910209785.6A CN110025340A (en) | 2019-03-19 | 2019-03-19 | A kind of knee joint dilator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110025340A true CN110025340A (en) | 2019-07-19 |
Family
ID=67236317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910209785.6A Pending CN110025340A (en) | 2019-03-19 | 2019-03-19 | A kind of knee joint dilator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110025340A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111528946A (en) * | 2020-05-07 | 2020-08-14 | 吕奕萱 | Knee joint spreader |
| CN114376630A (en) * | 2021-12-10 | 2022-04-22 | 中国人民解放军空军军医大学 | Neurosurgery is with nerve drag hook retractor device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4971037A (en) * | 1988-09-19 | 1990-11-20 | Pilling Co. | Surgical retractor support |
| US5616117A (en) * | 1995-08-03 | 1997-04-01 | Ohio Medical Instrument Company, Inc. | Self locking surgical retractor |
| US20050027171A1 (en) * | 2001-11-21 | 2005-02-03 | Minnesota Scientific, Inc. | Method for knee-joint surgery |
| CN202136454U (en) * | 2011-07-08 | 2012-02-08 | 山东省文登整骨医院 | Telescopic lower-limb traction bow |
| US20130006060A1 (en) * | 2009-09-24 | 2013-01-03 | Tevfik Cevdet Caner | Table attachable adjustable retractor system |
| CN204581371U (en) * | 2015-04-24 | 2015-08-26 | 蔡先启 | A kind of adjustable thoracic surgery machine for chest-opening |
| CN205126320U (en) * | 2015-09-01 | 2016-04-06 | 石翠玲 | Mastoid retractor |
| CN205163135U (en) * | 2015-11-19 | 2016-04-20 | 王明君 | Incision spread support device |
| CN205612505U (en) * | 2016-03-22 | 2016-10-05 | 永新县人民医院 | Drag hook is used in breast cancer operation |
| CN206381200U (en) * | 2016-09-29 | 2017-08-08 | 司剑炜 | Surgical operation pulling device |
| CN206792436U (en) * | 2016-11-03 | 2017-12-26 | 中国人民解放军第二军医大学 | A kind of nerve root retracto for showing value of thrust |
| CN108309379A (en) * | 2018-02-09 | 2018-07-24 | 中国人民解放军第四军医大学 | The minimally invasive channel of the novel intelligent anatomical form anterior cervical operation of multidirectional adjusting |
| CN207821859U (en) * | 2017-09-19 | 2018-09-07 | 贵州省人民医院 | A kind of hepatobiliary surgery drag hook |
-
2019
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Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4971037A (en) * | 1988-09-19 | 1990-11-20 | Pilling Co. | Surgical retractor support |
| US5616117A (en) * | 1995-08-03 | 1997-04-01 | Ohio Medical Instrument Company, Inc. | Self locking surgical retractor |
| US20050027171A1 (en) * | 2001-11-21 | 2005-02-03 | Minnesota Scientific, Inc. | Method for knee-joint surgery |
| US20130006060A1 (en) * | 2009-09-24 | 2013-01-03 | Tevfik Cevdet Caner | Table attachable adjustable retractor system |
| CN202136454U (en) * | 2011-07-08 | 2012-02-08 | 山东省文登整骨医院 | Telescopic lower-limb traction bow |
| CN204581371U (en) * | 2015-04-24 | 2015-08-26 | 蔡先启 | A kind of adjustable thoracic surgery machine for chest-opening |
| CN205126320U (en) * | 2015-09-01 | 2016-04-06 | 石翠玲 | Mastoid retractor |
| CN205163135U (en) * | 2015-11-19 | 2016-04-20 | 王明君 | Incision spread support device |
| CN205612505U (en) * | 2016-03-22 | 2016-10-05 | 永新县人民医院 | Drag hook is used in breast cancer operation |
| CN206381200U (en) * | 2016-09-29 | 2017-08-08 | 司剑炜 | Surgical operation pulling device |
| CN206792436U (en) * | 2016-11-03 | 2017-12-26 | 中国人民解放军第二军医大学 | A kind of nerve root retracto for showing value of thrust |
| CN207821859U (en) * | 2017-09-19 | 2018-09-07 | 贵州省人民医院 | A kind of hepatobiliary surgery drag hook |
| CN108309379A (en) * | 2018-02-09 | 2018-07-24 | 中国人民解放军第四军医大学 | The minimally invasive channel of the novel intelligent anatomical form anterior cervical operation of multidirectional adjusting |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111528946A (en) * | 2020-05-07 | 2020-08-14 | 吕奕萱 | Knee joint spreader |
| CN114376630A (en) * | 2021-12-10 | 2022-04-22 | 中国人民解放军空军军医大学 | Neurosurgery is with nerve drag hook retractor device |
| CN114376630B (en) * | 2021-12-10 | 2023-11-17 | 中国人民解放军空军军医大学 | Nerve retractor device for brain surgery |
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Application publication date: 20190719 |