CN210843224U - One-way lockable lumbar vertebra spreader - Google Patents
One-way lockable lumbar vertebra spreader Download PDFInfo
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- CN210843224U CN210843224U CN201921274221.2U CN201921274221U CN210843224U CN 210843224 U CN210843224 U CN 210843224U CN 201921274221 U CN201921274221 U CN 201921274221U CN 210843224 U CN210843224 U CN 210843224U
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- distractor
- lockable
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Abstract
The utility model belongs to the technical field of medical instrument, concretely relates to one-way lockable distraction device of lumbar vertebrae. This lumbar vertebrae is one-way can lock and struts ware includes: the device comprises a rack, a movable arm sleeved on the rack and a fixed arm fixedly arranged at one end of the rack, and is characterized in that the movable arm and the fixed arm are respectively connected with corresponding connecting arms through corresponding adjusting mechanisms; the adjusting mechanism is adapted to change the downward inclination angles of the opposite sides of the two connecting arms, respectively. The one-way lockable lumbar spreader of the utility model changes the downward inclination angles of the opposite sides of the two connecting arms through the adjusting mechanism respectively so as to realize the retraction during the operation.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, concretely relates to one-way lockable distraction device of lumbar vertebrae.
Background
In the lumbar surgery, a narrow lumbar space needs to be spread by using a tool, so that a sufficient operation space is provided for the surgery.
At present, among the information related to the existing two-way retractors, the most relevant technology of the present invention is the utility model with the publication number of CN204655012U, a two-way retractor. The retractor in the utility model adopts an articulated mode at the retracting position, so that the proper retracting angle is not convenient to adjust.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an one-way lockable spreader of lumbar vertebrae to a one-way lockable spreader of lumbar vertebrae convenient to adjust and lead out angle is provided.
In order to solve the technical problem, the utility model provides an one-way lockable distraction device of lumbar vertebrae, include:
a rack, a movable arm sleeved on the rack and a fixed arm fixedly arranged at one end of the rack,
the movable arm and the fixed arm are respectively connected with the corresponding connecting arms through corresponding adjusting mechanisms;
the adjusting mechanism is adapted to change the downward inclination angles of the opposite sides of the two connecting arms, respectively.
Furthermore, a short transverse part is arranged at the connecting end of the connecting arm and the adjusting mechanism, so that the connecting arm is L-shaped;
the adjustment mechanism includes: the body with cavity, the said cavity is suitable for holding the short transverse part, and make the short transverse part to the outside direction, and the outside of the body has through holes; wherein
A connecting shaft is adapted to penetrate the through hole and the short transverse portion so that the connecting arm rotates around the connecting shaft.
Further, the adjusting mechanism comprises an angle adjusting screw arranged on the inner side of the body;
an adjusting hole is formed in the L-shaped part of the connecting arm;
the angle adjusting screw is screwed downwards to adjust the downward inclination angle of the connecting arm to be 0-25 degrees.
Furthermore, the adjusting mechanism is connected with the connecting end of the movable arm through a hinge.
Furthermore, the adjusting mechanism is connected with the connecting end of the fixing arm through a hinge.
Furthermore, the other end parts of the two connecting arms are hinged with corresponding clamping heads.
Further, the swinging angle of the clamping head along the connecting arm is +/-35 degrees.
Furthermore, a locking mechanism suitable for fixing the opening sheet is arranged on the clamping head;
the locking mechanism includes: the locking plate, the button linked with the locking plate through the rotating shaft and the opening suitable for placing the opening plate are arranged;
the radian of the edge of the locking plate is matched with the radian of the opening;
the locking piece is pressed towards the inner side direction of the clamping head so that the locking piece enters the opening to lock the opening piece.
Further, the movable arm includes: a translation mechanism;
the translation mechanism includes: the gear meshed with the rack is arranged at one end of the rotating shaft, and the rotating handle and the stopper are arranged at the other end of the rotating shaft;
in a static state, the ejector rod of the limiting stopper is suitable for abutting against the rack so as to lock the movable arm to move horizontally.
Furthermore, the fixed arm sleeve is fixed at one end of the rack by laser welding.
The beneficial effects of the utility model are that, the utility model discloses an one-way lockable distraction device of lumbar vertebrae, digging arm, fixed arm connect corresponding linking arm through corresponding adjustment mechanism respectively, and adjustment mechanism is suitable for the downward sloping angle that changes two linking arms opposite sides respectively to realize the drawing of operation position, enlarge the field of vision of operation.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a front view of the lumbar unidirectional lockable distractor of the utility model;
fig. 2 is a bottom view of the lumbar unidirectional lockable distractor of the present invention.
In the figure:
the device comprises a rack 1, a fixed arm 2, a rotating shaft 201, a rotating handle 202, a limiter 203, a movable arm 3, an adjusting mechanism 4, a cavity 401, a connecting shaft 402, an angle adjusting screw 403, a connecting arm 5, a clamping head 6, a locking mechanism 7, a locking plate 701, a button 702 and an opening 703.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
Fig. 1 is a front view of the lumbar unidirectional lockable distractor of the utility model;
fig. 2 is a bottom view of the lumbar unidirectional lockable distractor of the present invention.
As shown in fig. 1 and 2, the present embodiment provides a lumbar vertebrae one-way lockable distractor, comprising: the device comprises a rack 1, a movable arm 2 sleeved on the rack 1 and a fixed arm 3 fixedly arranged at one end of the rack 1, wherein the movable arm 2 and the fixed arm 3 are respectively connected with a corresponding connecting arm 5 through a corresponding adjusting mechanism 4; the adjusting mechanism 4 is suitable for respectively changing the downward inclination angles of the opposite sides of the two connecting arms 5 so as to realize the retraction of the operation part and expand the visual field of the operation.
Wherein, the fixed arm 3 is sleeved at one end of the rack 1 and fixed by laser welding.
In this embodiment, the connecting end of the connecting arm 5 and the adjusting mechanism 4 is provided with a short transverse portion, so that the connecting arm 5 is L-shaped; the adjusting mechanism 4 includes: the body with cavity 401, the said cavity 401 is suitable for holding the short horizontal part, and make the short horizontal part to the outside direction, and the outside of the body offers the through hole; one of the connecting shafts 402 is adapted to penetrate the through hole and the short transverse portion so that the connecting arm 5 rotates around the connecting shaft 402.
In this embodiment, the adjusting mechanism 4 includes an angle adjusting screw 403 disposed on the inner side of the body; an adjusting hole is formed in the L-shaped part of the connecting arm 5; the angle adjusting screw 403 is screwed downwards to adjust the downward inclination angle of the connecting arm 5 to be 0-25 degrees. The connecting arm 5 can be inclined by screwing the angle adjusting screw 403 downwards, so that the operation is simple, the retracting angle can be conveniently adjusted, and the retracting is stable.
In this embodiment, the adjusting mechanism 4 is hinged to the connecting end of the movable arm 2; the adjusting mechanism 4 is connected with the connecting end of the fixing arm 3 through a hinge.
In this embodiment, the other end portions of the two connecting arms 5 are hinged to corresponding clamping heads 6, and the angle of the clamping heads 6 swinging along the connecting arms 5 is ± 35 °. Can realize the inclination of multiple sections, has larger retracting range and reduces the injury to the lumbar.
Further, a locking mechanism 7 suitable for fixing the opening sheet is arranged on the clamping head 6; the locking mechanism 7 includes: a locking plate 701, a button 702 linked with the locking plate 701 through a rotating shaft, and an opening 703 suitable for placing a spreading sheet; the radian of the edge of the locking plate 701 is matched with the radian of the opening 703; the locking tab 701 is pressed inward of the gripping head 6 to allow the locking tab 701 to enter the opening 703 to lock the spreader tab, effectively preventing the spreader tab from rotating and sliding in the opening 703. The support piece can be removed by pressing the button 702 to restore the original position of the locking plate 701.
In this embodiment, the movable arm 2 includes: a translation mechanism; the translation mechanism includes: one end of the rotating shaft 201 is provided with a gear meshed with the rack 1, the other end of the rotating shaft 201 is provided with a rotating handle 202, and the rotating shaft further comprises a stopper 203; in the rest state, the top rod of the stopper 203 is suitable for abutting against the rack 1 to prevent the lock movable arm 2 from translating.
To sum up, the lumbar vertebrae one-way lockable dilator of the utility model rotates downwards through the angle adjusting screw 403, so that the connecting arm 5 is inclined downwards to form a conical channel, the operation is simple, the retraction of the operation part can be realized, and the visual field of the operation is enlarged; the multi-section inclination can be realized through the adjusting mechanism 4, the connecting arm 5 and the clamping head 6, the retracting range is larger, and the wound to the lumbar vertebra is reduced.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. A lumbar one-way lockable distractor, comprising: a rack, a movable arm sleeved on the rack and a fixed arm fixedly arranged at one end of the rack,
the movable arm and the fixed arm are respectively connected with the corresponding connecting arms through corresponding adjusting mechanisms;
the adjusting mechanism is adapted to change the downward inclination angles of the opposite sides of the two connecting arms, respectively.
2. The lumbar unidirectional lockable distractor of claim 1,
the connecting end of the connecting arm and the adjusting mechanism is provided with a short transverse part so that the connecting arm is L-shaped;
the adjustment mechanism includes: the body with cavity, the said cavity is suitable for holding the short transverse part, and make the short transverse part to the outside direction, and the outside of the body has through holes; wherein
A connecting shaft is adapted to penetrate the through hole and the short transverse portion so that the connecting arm rotates around the connecting shaft.
3. The lumbar unidirectional lockable distractor of claim 2,
the adjusting mechanism comprises an angle adjusting screw arranged on the inner side of the body;
an adjusting hole is formed in the L-shaped part of the connecting arm;
the angle adjusting screw is screwed downwards to adjust the downward inclination angle of the connecting arm to be 0-25 degrees.
4. The lumbar unidirectional lockable distractor of claim 1,
the adjusting mechanism is connected with the connecting end of the movable arm through a hinge.
5. The lumbar unidirectional lockable distractor of claim 1,
the adjusting mechanism is connected with the connecting end of the fixed arm through a hinge.
6. The lumbar unidirectional lockable distractor of claim 2,
the other end parts of the two connecting arms are hinged with corresponding clamping heads.
7. The lumbar unidirectional lockable distractor of claim 6,
the swinging angle of the clamping head along the connecting arm is +/-35 degrees.
8. The lumbar unidirectional lockable distractor of claim 7,
the clamping head is provided with a locking mechanism suitable for fixing the opening sheet;
the locking mechanism includes: the locking plate, the button linked with the locking plate through the rotating shaft and the opening suitable for placing the opening plate are arranged;
the radian of the edge of the locking plate is matched with the radian of the opening;
the locking piece is pressed towards the inner side direction of the clamping head so that the locking piece enters the opening to lock the opening piece.
9. The lumbar unidirectional lockable distractor of claim 1,
the movable arm includes: a translation mechanism;
the translation mechanism includes: the gear meshed with the rack is arranged at one end of the rotating shaft, and the rotating handle and the stopper are arranged at the other end of the rotating shaft;
in a static state, the ejector rod of the limiting stopper is suitable for abutting against the rack so as to lock the movable arm to move horizontally.
10. The lumbar unidirectional lockable distractor of claim 1,
the fixed arm is sleeved at one end of the rack and fixed through laser welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921274221.2U CN210843224U (en) | 2019-08-07 | 2019-08-07 | One-way lockable lumbar vertebra spreader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921274221.2U CN210843224U (en) | 2019-08-07 | 2019-08-07 | One-way lockable lumbar vertebra spreader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210843224U true CN210843224U (en) | 2020-06-26 |
Family
ID=71294198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921274221.2U Active CN210843224U (en) | 2019-08-07 | 2019-08-07 | One-way lockable lumbar vertebra spreader |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210843224U (en) |
-
2019
- 2019-08-07 CN CN201921274221.2U patent/CN210843224U/en active Active
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