CN110051392B - Device for opening temporomandibular joint - Google Patents
Device for opening temporomandibular joint Download PDFInfo
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- CN110051392B CN110051392B CN201910208449.XA CN201910208449A CN110051392B CN 110051392 B CN110051392 B CN 110051392B CN 201910208449 A CN201910208449 A CN 201910208449A CN 110051392 B CN110051392 B CN 110051392B
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- 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
- A61B17/0206—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors with antagonistic arms as supports for retractor elements
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- 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
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (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)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The invention relates to a device for opening temporomandibular joints, which comprises a fixed supporting piece, a movable supporting piece, a sliding body, a rotating mechanism and a connecting piece, wherein one end of the sliding body is connected with the upper part of a fixed arm of the fixed supporting piece and is vertical to the fixed arm; the fixed arm hook is positioned at the bottom of the fixed arm and faces back to the sliding body, and the moving arm hook is positioned at the bottom of the moving arm and is opposite to the direction of the fixed arm hook. The sliding body is a flat rectangular body, the top surface of the sliding body is provided with a rack, the side surface of the sliding body is provided with a track, the rotating mechanism comprises a gear, a rotating handle and a locking device, the rotating handle is connected with the gear, the gear can roll on the rack through rotating the rotating handle or be locked through the locking device, the connecting piece is fixed on the sliding body and is connected with and linked with the rotating mechanism and the moving arm, and the connecting piece can be driven by the rotating mechanism to translate or lock along the track so as to enable the moving arm to translate or be locked on the sliding body.
Description
Technical Field
The invention relates to the field of surgical instruments, in particular to a device for distracting a temporomandibular joint, so as to realize sufficient and stable exposure of a mandibular condyloid process surgical area.
Background
Temporomandibular joint is the movable joint in front of ears on both sides of the face, is the only left and right bilateral linkage joint of the maxillofacial region, and has certain stability and multidirectional mobility. Under the action of muscles, the Chinese herbal medicine composition participates in various important activities such as chewing, swallowing, language and expression. The temporomandibular joint consists of the condyloid process of the mandible, the joint fossa, the joint disc between the two, the joint capsule around the joint and the joint ligaments. The temporomandibular joint is closely related to the daily life of people, is frequently used and is easy to cause injury and pathological changes.
Common diseases include temporomandibular joint disorder, mandibular condyloid fracture, temporomandibular joint ankylosis, condyloid tumor, etc. According to the statistics of experts at home and abroad, 25-50% of people in the population suffer from temporomandibular joint disorder, the disease occurs better in young and middle-aged people, and the prevalence rate and the diagnosis rate are the highest according to the age of 20-30. In recent years, with the increase of traffic accidents, cases of temporomandibular joint trauma and condyloid fracture are also obviously increased, and temporomandibular joint rigidity and temporomandibular joint dislocation are also more. With the improvement of living standard and the pursuit of beauty, in recent years, the number of operators who perform operations due to secondary deformity of the maxillofacial region caused by arthropathy is increasing.
Surgery is often required to treat the temporomandibular joint condition described above, and the space between the temporomandibular joint is opened to expose the surgical field. But actually the space between the fossa glenoid and the condyloid process of the temporomandibular joint is very small, and the space is close to the structures such as the skull base and the peripheral vascular nerves, and especially in recent years, minimally invasive surgery treatment is advocated, the small incision in front of the tragus is mostly selected as the condyloid process surgical incision, the surgical operation space is small, the surgical operation area is not easy to expose, and the operation is difficult. At present, a surgical instrument is adopted to assist in distraction of a temporomandibular joint in an operation, but the distraction effect of the surgical instrument is poor, and after the temporomandibular joint is distracted, the operation visual field is narrow, so that the condition and the operation are inconvenient to observe; still exist can't fix the operation instrument under the state of strutting, often still need an assistant to assist, just can fix the state of strutting, often because the operation cooperation that two people are uncoordinated causes the problem that the operation wound loss enlarges.
Disclosure of Invention
The invention provides a device for opening a temporomandibular joint, which aims to solve the problems that the temporomandibular joint is difficult to stably open in a condyloid process operation, an operation area of the condyloid process is not fully exposed and the operation space is small.
The technical scheme of the invention is as follows:
a device for opening temporomandibular joint is characterized in that it comprises a fixed supporting piece, a movable supporting piece, a sliding body, a rotating mechanism and a connecting piece,
the fixed support piece comprises a fixed arm and a fixed arm hook, the movable support piece comprises a movable arm and a movable arm hook, one end of the sliding body is connected with the upper part of the fixed arm and is perpendicular to the fixed arm, the upper part of the movable arm is movably connected with the sliding body through the rotating mechanism and the connecting piece, the movable arm is parallel to the fixed arm, the fixed arm hook is positioned at the bottom of the fixed arm and faces back to the sliding body, the movable arm hook is positioned at the bottom of the movable arm and is opposite to the direction of the fixed arm hook,
the sliding body is a flat rectangular body, the top surface of the sliding body is provided with a rack, the side surface is provided with a track,
the rotating mechanism comprises a gear, a rotating handle and a locking device, the rotating handle is connected with the gear, the gear is positioned on the rack, the gear can roll on the rack by rotating the rotating handle or be locked by the locking device,
the connecting piece is fixed on the sliding body, is connected with the rotating mechanism and the moving arm and is linked, and the connecting piece can be driven by the rotating mechanism to translate or lock along the track of the sliding body, so that the moving arm translates or locks on the sliding body.
The connecting piece consists of a square sleeve and a side plate which are connected with each other,
the square sleeve is erected on the sliding body, the lower part of the square sleeve is provided with a notch for accommodating the sliding body, the upper part of the moving arm is fixed in the square sleeve and is positioned at one side of the sliding body,
the side plate is positioned on the other side of the sliding body and is attached to the side face of the sliding body, and a through hole is formed in the side plate and is matched with the screw rod of the rotating handle.
The rotary handle is a butterfly handle, a movable joint is arranged in the middle of the screw rod, and the movable joint can be bent by 90 degrees to enable the handle end of the butterfly handle to be tightly attached to the side plate so as to lock the gear.
The track is a groove and a corresponding bulge is arranged on the notch of the square sleeve, or the track is a bulge and a corresponding groove is arranged on the notch of the square sleeve.
The side wall of the square sleeve is provided with a screw hole, a screw passes through the screw hole and extends into the square sleeve,
when the tail end of the screw is abutted to the moving arm, the moving arm is fixed in the square sleeve; when the end of the screw is separated from the moving arm, the moving arm can move up and down in the square sleeve.
The length of the fixed arm is 2-5cm, the length of the moving arm is 2-7cm, the length of the sliding body is 3-6cm, the length of the rack accounts for 1/2-1 of the total length of the sliding body, the upper portions of the moving arm and the fixed arm are square rods, the lower portions of the moving arm and the fixed arm are round rods, and the diameter of each round rod is 0.25 mm.
The bottom of the moving arm is connected with a horizontal cross rod, and the tail end of the horizontal cross rod is provided with the moving arm hook.
The length of the horizontal cross bar is 0.5-2 cm.
One end of the sliding body is connected with a handle rod, and the handle rod is positioned on the side surface of the sliding body and is respectively perpendicular to the sliding body and the fixing arm.
The fixed arm hook and the movable arm hook are C-shaped.
The invention has the technical effects that:
the invention discloses a device for opening a temporomandibular joint, which is used for opening the temporomandibular joint in a condyloid process operation and is an automatic draw hook. When the movable arm hook is used, an incision in front of an ototrary is operated to expose an operation area, the fixed arm hook is firstly clamped in a cutting mark (also called as a zygomatic pedicle) in front of a zygomatic arch joint node positioned on the upper side of the human face, the distance between the movable arm and the fixed arm is adjusted by adjusting the butterfly-shaped handle from left to right, the position of the movable arm in the square sleeve is adjusted by adjusting the screws from left to right, finally the movable arm is adjusted to a proper position, and the movable arm hook is clamped in a mandibular B-shaped cutting mark positioned on the lower side of the human face in a stress-free. Then one hand holds the handle rod, and the butterfly handle is rotated to the right to the other hand, and the gear rolls along the rack to the direction of keeping away from the fixed arm, drives the connecting piece and moves along track translation downwards to realize the removal arm and to the direction translation of keeping away from the fixed arm on the sliding mass, increase the distance of fixed arm and removal arm, make the mandible shift downwards, and then strut the articular fossa glenoid of temporomandibular joint and the clearance between the condyloid process, expose the condyloid process operation area. When the exposure requirement is met, the butterfly-shaped handle is pulled to rotate 90 degrees along the movable joint on the screw rod and then is tightly attached to the side plate of the connecting piece, and due to friction force between the butterfly-shaped handle and the gear, the butterfly-shaped handle and the gear are locked, so that the position of the movable arm is locked, and the opening state of the temporomandibular joint is maintained. The distraction distance can be adjusted according to the needs in the art, and after the operation is finished, the butterfly wrench is pulled by 90 degrees along the movable joint and returns to the initial position, the butterfly handle is unlocked, and the device is removed.
In conclusion, the device is provided with the fixed supporting piece and the movable supporting piece, the fixed supporting piece and the movable supporting piece are not directly acted on the temporomandibular joint (connected by tissues such as a joint capsule and the like), but the arm hook is clamped on the sigmoid notch and the zygomatic arch root, so that the temporomandibular joint is indirectly propped open, as the thicknesses of the sigmoid notch and the zygomatic arch root are moderate, the surrounding tissues can be free to be exposed, and the surrounding important tissues are not easily damaged in the free process, the fixed arm hook and the movable arm hook can be easily clamped at the position, the temporomandibular joint can be indirectly propped open by propping open the two positions, and the size of the propped gap is adjustable, so that the joint head is fully exposed, and the operation operable space is larger; in addition, the device of the present invention also reduces damage to the joint capsule and soft tissue, and allows the site to recover more quickly after surgery. After the distraction requirement is met, the distraction degree can be locked only by the locking device, secondary injury to an operator caused by unstable distraction is avoided, smooth operation is ensured, and an additional assistant is not needed.
The technical terms relating to the zygomatic root and mandibular sigmoid notch are explained as follows: the zygomatic arch is composed of two bones, and the zygomatic arch formed by the temporal zygomatic process and the temporal zygomatic process is positioned on both sides of the craniofacial bones and is in an outward bow shape. The mandibular incision or sigmoid incision is the concave border between two bony prominences above the mandibular ramus, the posterior bony prominence is called the condyloid process, and the anterior bony prominence is called the coracoid process or the muscular process.
Preferably, the rotating mechanism comprises a control gear and a butterfly handle, so that the gear can roll on the teeth by screwing the butterfly handle.
Preferably, the movable joint is arranged in the middle of the screw rod of the butterfly handle, and after the movable joint is bent by 90 degrees, the planes of the two handles of the butterfly handle are tightly attached to the side plate of the connecting piece (the side plate and the butterfly handle can be made of materials capable of attracting each other or the position of the movable joint can be accurately set), and the butterfly handle is locked due to the friction force of the two attached planes. Since the radius of the butterfly handle is more than 3 times of the radius of the gear, the gear can be screwed only by external force which is more than 3 times of friction force, and the gear which does not actually have external force action can not be screwed and locked. Other forms of locking means may of course be provided, but the engagement of the butterfly wrench and the side plate as a locking means by means of a movable joint as described above greatly simplifies the construction.
Preferably, the movable arm moves up and down in the square sleeve through the screw on the side wall of the square sleeve, the length of the square rod of the movable arm accounts for 1/2 of the total length of the movable arm, namely the up-down movable distance accounts for half of the total length of the movable arm, so that the movable arm can move up and down and can move left and right, the position can be conveniently adjusted, and the propped joint can be accurately aligned.
Preferably, the length of the moving arm is greater than or equal to that of the fixed arm, the length of the fixed arm ranges from 2cm to 5cm, the length of the moving arm ranges from 2cm to 7cm, the length of the sliding body ranges from 3cm to 6cm, the length of the rack accounts for 1/2-1 of the total length of the sliding body, and the diameter of the moving arm and the round rod at the bottom of the fixed arm is 0.25 mm.
Preferably, the lower end of the mobile arm has a horizontal cross-bar, which can be selected to have different specifications, for example 0.5cm, 1cm, 1.5cm or 2cm, for matching different patients of different ages and sexes, for example children and adults, whose distance from the sigmoid notch to the zygomatic root is different.
Preferably, the handle rod is arranged on the side surface of the sliding body, preferably on the same side with the butterfly handle and the screw, and is vertically distributed with the sliding body and the fixing arm to form distribution similar to an x-y-z axis, so that an operator can hold the handle rod conveniently, and particularly after the handle rod is unfolded, the handle rod is kept in a stable unfolded state.
Preferably, the fixed arm hook and the moving arm hook are C-shaped, supporting abutment more firmly and stably.
Drawings
FIG. 1 is a schematic perspective view of an embodiment of the temporomandibular joint distraction device of the invention;
FIG. 2 is a schematic partial top view of an embodiment of the temporomandibular joint distraction device of the invention;
FIG. 3 is a partial top schematic view of the gear in a locked condition;
FIG. 4 is an enlarged view in partial cross-section of the temporomandibular joint distraction device of the invention;
fig. 5 is a schematic view of the state of use of the temporomandibular joint distraction device of the invention.
1-fixed support, 11-fixed arm, 12-fixed arm hook, 2-movable support, 21-movable arm, 22-movable arm hook, 23-horizontal cross bar, 3-sliding body, 31-rack, 32-track, 4-rotating mechanism, 41-gear, 42-butterfly handle, 43-screw rod, 44-movable joint, 5-connecting piece, 51-square sleeve, 52-side plate, 511-notch, 512-bulge, 6-screw, 7-handle rod, 8-mandible, 9-skull and 10-condyloid surgical area.
Detailed Description
For a clear understanding of the contents of the invention, reference will now be made in detail to the embodiments illustrated in FIGS. 1-5.
As shown in fig. 1-2, the device for distracting the temporo-inferior joint of the present embodiment comprises a fixed support member 1, a movable support member 2, a sliding body 3, a rotating mechanism 4, a connecting member 5 and a handle bar 7. Wherein fixed support 1 includes fixed arm 11, remove support 2 including removal arm 21, the one end of gliding mass 3 with the upper portion of fixed arm 11 is connected, and perpendicular to fixed arm 11, removal arm 21 with fixed arm 11 is parallel, with gliding mass 3 swing joint. The handle rod 7 is fixed at one end of the sliding body 3, is respectively vertical to the sliding body 3 and the fixing arm 11, and is distributed along an x-y-z axis for being held by a user of the device. The bottom of the fixed arm 11 is provided with a C-shaped fixed arm hook 12, the fixed arm hook 12 faces away from the sliding body 3, and the bottom of the moving arm 21 is provided with a C-shaped moving arm hook 22, which is opposite to the fixed arm hook 12.
The slider 3 is a flat rectangular parallelepiped, and the slider 3 has a rack 31 on the top surface and a rail 32 on one side surface. The connecting piece 5 is composed of a square sleeve 51 and a side plate 52 which are connected with each other, the upper part of the moving arm 21 is positioned in the square sleeve 51, the square sleeve 51 is positioned on the sliding body 3, the lower part of the moving arm is provided with a long strip-shaped notch 511 for accommodating the sliding body 3, and the notch 511 is provided with a protrusion 512 which is clamped in the track 32; the side plate 52 is connected with the square sleeve 51, is positioned at the other side of the sliding body 3, and is attached to the side surface of the sliding body 3. The rotating mechanism 4 comprises a gear 41 and a butterfly handle 42, the gear 41 is positioned on the rack 31 and meshed with the teeth of the rack 31, and a screw 43 of the butterfly handle 42 passes through a through hole on the side plate 52 and is connected with the gear 41. Therefore, the connecting piece 5 is connected with the rotating mechanism 4 and the moving arm 21 into a whole to realize linkage, the rotating mechanism 4 rotates to drive the connecting piece 5 to move smoothly along the track 32 of the sliding body 3, the moving arm 21 translates on the sliding body 3, and the gap between the moving arm 21 and the fixed arm 11 is controlled.
As shown in fig. 2-3, the middle of the screw 43 has a movable joint 44, fig. 2 is a home position, the screw 43 is extended, and the plane of the handle of the butterfly handle 42 is perpendicular to the side plate 52; when the handle end of the butterfly handle 42 is pulled, the butterfly handle 42 is bent by 90 ° along the movable joint 44 to the locking position, as shown in fig. 3, the screw 43 is divided into two parts perpendicular to each other, and the plane of the handle end of the butterfly handle 42 is parallel to and closely attached to the side plate 52. The two planes have friction due to the close contact, preventing the gear 41 from rotating, so that the mobile arm 21 is locked in position in the slider 3.
As shown in fig. 4, the moving arm 21 is located in the square sleeve 51, three sides of the moving arm are attached to three inner walls of the square sleeve 51, and the other side is abutted against the end of the screw 6, so that the moving arm 21 is fixed in the square sleeve 51. The screw 6 passes through a screw hole on the side wall of the square sleeve 51 and is positioned on the side surface of the sliding body 3 and on the same side as the butterfly handle 42. When the round nut at the top of the screw 6 is screwed so that the tip of the screw 6 is spaced apart from the moving arm 21, the moving arm 21 can move up and down within the square sleeve 51, thereby adjusting the length of the moving arm 21 as needed.
The fixed arm 11 is 3cm long; the total length of the moving arm 21 is 6cm, the length of an upper square rod of the moving arm 21 is 3cm, scales are provided, the precision is 0.1cm, and the diameters of lower circular tubes of the fixed arm 11 and the moving arm 21 are both 0.25 mm; the length of the sliding body 3 is 5cm, the length of the rack 31 is 5cm, and the precision is 0.1 cm. The widest part of the clamping arm of the fixed arm hook 12 is 1cm, and the arc width of the bottom is about 0.4 cm; the widest part of the clamping arm of the moving arm hook 22 is 0.8cm, and the arc width of the bottom part is about 0.2 cm.
A horizontal cross bar 23 is connected to the bottom of the moving arm 21, the moving arm hook 22 is arranged at the tail end of the horizontal cross bar 23, and the length of the horizontal cross bar 23 can be four types, namely 0.5cm, 1cm, 1.5cm and 2 cm.
The device for opening the temporomandibular joint is an automatic retractor and is mainly used for the operation of the condyloid process area. As shown in fig. 5, in use, the front incision of the tragus is operated to expose the operation area, the fixed arm hook 12 is placed in front of the zygomatic arch joint of the skull 9, the left and right positions of the movable arm 21 are adjusted by adjusting the butterfly handle 42 and the screw 6 left and right, finally the movable arm 21 is adjusted to a proper position, and the movable arm hook 22 is placed in the B-shaped incision mark of the mandible 8 in an unstressed state. Then, the handle rod 7 is held by hand, the butterfly handle 42 is rotated, the gear 41 rolls on the rack 31, the connecting piece 5 is driven to move along the groove 32 of the sliding body 3 in the direction away from the fixing arm 11, the moving arm 21 translates downwards, the mandible 8 moves downwards, the gap of the temporomandibular joint is opened, after the exposure requirement of the condyloid surgical area 10 is met, the butterfly handle 42 is pulled to the side surface by 90 degrees along the movable joint 44, the butterfly handle 42 and the gear 41 are locked, and the opening state of the temporomandibular joint is maintained. The distraction distance can be adjusted as required during the operation, and after the operation is finished, the butterfly handle 42 is unlocked and the device is removed.
It is pointed out here that the above description is helpful for the person skilled in the art to understand the content of the invention, but does not limit the scope of protection of the invention. Any such equivalents, modifications and/or omissions as may be made without departing from the spirit and scope of the invention may be resorted to.
Claims (7)
1. A device for opening temporomandibular joint is characterized in that it comprises a fixed supporting piece, a movable supporting piece, a sliding body, a rotating mechanism and a connecting piece,
the fixed support piece comprises a fixed arm and a fixed arm hook, the movable support piece comprises a movable arm and a movable arm hook, one end of the sliding body is connected with the upper part of the fixed arm and is perpendicular to the fixed arm, the upper part of the movable arm is movably connected with the sliding body through the rotating mechanism and a connecting piece, the movable arm is parallel to the fixed arm, the fixed arm hook is positioned at the bottom of the fixed arm and faces back to the sliding body, the movable arm hook is positioned at the bottom of the movable arm and is opposite to the direction of the fixed arm hook, and the fixed arm hook and the movable arm hook are C-shaped;
the sliding body is a flat rectangular body, the top surface of the sliding body is provided with a rack, the side surface is provided with a track,
the rotating mechanism comprises a gear, a rotating handle and a locking device, the rotating handle is connected with the gear, the gear is positioned on the rack, the gear can roll on the rack by rotating the rotating handle or be locked by the locking device,
the connecting piece is fixed on the sliding body, is connected and linked with the rotating mechanism and the moving arm, and can be driven by the rotating mechanism to translate or lock along the track of the sliding body so as to enable the moving arm to translate or lock on the sliding body;
the connecting piece consists of a square sleeve and a side plate which are connected with each other,
the square sleeve is erected on the sliding body, the lower part of the square sleeve is provided with a notch for accommodating the sliding body, the notch and the upper part of the moving arm of the track are fixed in the square sleeve and positioned at one side of the sliding body,
the side plate is positioned on the other side of the sliding body and is attached to the side surface of the sliding body, and a through hole is formed in the side plate and is matched with the screw rod of the rotating handle;
the rotary handle is a butterfly handle, a movable joint is arranged in the middle of the screw rod, and the movable joint can be bent by 90 degrees to enable the handle end of the butterfly handle to be tightly attached to the side plate so as to lock the gear.
2. A temporomandibular joint distraction device according to claim 1, wherein the track is a groove and the notch of the square sleeve has a corresponding projection or the track is a projection and the notch of the square sleeve has a corresponding groove.
3. The temporomandibular joint distraction device of claim 1, wherein the side wall of the square sleeve has screw holes through which screws extend into the square sleeve,
when the tail end of the screw is abutted to the moving arm, the moving arm is fixed in the square sleeve; when the end of the screw is separated from the moving arm, the moving arm can move up and down in the square sleeve.
4. A temporomandibular joint distraction device according to any one of claims 1 to 3, wherein the length of the fixed arm is 2 to 5cm, the length of the mobile arm is 2 to 7cm, the length of the slider is 3 to 6cm, the length of the rack is 1/2-1 of the total length of the slider, the upper part of the mobile and fixed arms is a square bar and the lower part is a round bar, the diameter of the round bar is 0.25 mm.
5. The temporomandibular joint distraction device of claim 4, wherein a horizontal cross bar is attached to the bottom of the distraction arm, the end of the horizontal cross bar having the distraction arm hook.
6. An apparatus for distracting a temporomandibular joint according to claim 5, wherein the horizontal cross bar is 0.5-2cm in length.
7. The temporomandibular joint distraction apparatus of claim 1, wherein a handle bar is attached to one end of the slider body, said handle bar being laterally disposed from the slider body and perpendicular to the slider body and the stationary arm, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910208449.XA CN110051392B (en) | 2019-03-19 | 2019-03-19 | Device for opening temporomandibular joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910208449.XA CN110051392B (en) | 2019-03-19 | 2019-03-19 | Device for opening temporomandibular joint |
Publications (2)
| Publication Number | Publication Date |
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| CN110051392A CN110051392A (en) | 2019-07-26 |
| CN110051392B true CN110051392B (en) | 2021-03-16 |
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|---|---|---|---|
| CN201910208449.XA Expired - Fee Related CN110051392B (en) | 2019-03-19 | 2019-03-19 | Device for opening temporomandibular joint |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021086288A1 (en) * | 2019-10-30 | 2021-05-06 | Fnss Savunma Si̇stemleri̇ A.Ş. | Rotating mechanism with lockable gear |
| CN111281451A (en) * | 2020-03-18 | 2020-06-16 | 王加玮 | Dilator for cardiothoracic surgery and prompting method |
| CN113303928B (en) * | 2021-04-25 | 2023-09-05 | 刘峰 | Mandibular support with multifunctional adjustment for tonsillectomy |
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| CN201101551Y (en) * | 2007-09-12 | 2008-08-20 | 兰州兰飞医疗器械有限公司 | Multifunctional surgical retractor |
| CN203107249U (en) * | 2013-03-26 | 2013-08-07 | 江苏荷普医疗器械有限公司 | Cervical vertebra distraction device |
| EP3005957A1 (en) * | 2014-10-09 | 2016-04-13 | CARDIOMEDICAL GmbH | Surgical instrument |
| CN206080586U (en) * | 2016-07-11 | 2017-04-12 | 管廷进 | Unilateral wicresoft incision sour jujube is pedicle of vertebral arch retractor suddenly |
| CN109222870A (en) * | 2018-11-24 | 2019-01-18 | 潘文婷 | Oral cavity adjuvant treatment and check device |
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- 2019-03-19 CN CN201910208449.XA patent/CN110051392B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201101551Y (en) * | 2007-09-12 | 2008-08-20 | 兰州兰飞医疗器械有限公司 | Multifunctional surgical retractor |
| CN203107249U (en) * | 2013-03-26 | 2013-08-07 | 江苏荷普医疗器械有限公司 | Cervical vertebra distraction device |
| EP3005957A1 (en) * | 2014-10-09 | 2016-04-13 | CARDIOMEDICAL GmbH | Surgical instrument |
| CN206080586U (en) * | 2016-07-11 | 2017-04-12 | 管廷进 | Unilateral wicresoft incision sour jujube is pedicle of vertebral arch retractor suddenly |
| CN109222870A (en) * | 2018-11-24 | 2019-01-18 | 潘文婷 | Oral cavity adjuvant treatment and check device |
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| CN110051392A (en) | 2019-07-26 |
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