CN210727846U

CN210727846U - Locking device

Info

Publication number: CN210727846U
Application number: CN201920906444.XU
Authority: CN
Inventors: 彭笳宸; 李敬; 李立宇; 孙彦实; 毛联甲
Original assignee: Beijing AK Medical Co Ltd
Current assignee: Beijing AK Medical Co Ltd
Priority date: 2019-06-14
Filing date: 2019-06-14
Publication date: 2020-06-12
Anticipated expiration: 2029-06-14

Abstract

The utility model provides a locking apparatus, include: a guide; the sleeve is sleeved on the guide piece and can move along the length direction of the guide piece; a first clamping member disposed at one end of the guide member; the second clamping piece is arranged on the sleeve and is used for being matched with the first clamping piece to clamp the object; the locking portion is arranged on the sleeve and has a locking state and an avoiding state, the locking portion is matched with the guide piece to prevent the sleeve from moving in the direction away from the first clamping piece under the condition that the locking portion is in the locking state, and the locking portion avoids the guide piece under the condition that the locking portion is in the avoiding state. Through the technical scheme provided by the utility model, can solve the difficult problem of operation of pelvis false body reconstruction operation among the prior art.

Description

Locking device

Technical Field

The utility model relates to the technical field of medical equipment, particularly, relate to a locking apparatus.

Background

Clinically, pelvic tumors are common and account for 3% -5% of primary bone tumors, with the greatest number of cartilage system tumors and the secondary tumors including giant cell tumors, osteogenic sarcomas and the like. The traditional Chinese medicine composition has the characteristics of slight initial symptoms, long incubation period and difficulty in finding, can be found only when severe pain is caused in the later period, but the tumor occupies a large area of the pelvis at the time, and even breaks through the bone wall and enters soft tissues. When bone tumors are found clinically, often over time, advanced tumors grow into large masses that can fill the pelvic cavity and expand upward beyond the midline of the abdomen, pushing the bladder and rectum toward the healthy side.

The traditional treatment method generally comprises the steps of amputation or pelvic prosthesis reconstruction operation and then chemotherapy. Since amputation can lead to significant disability in the patient, pelvic prosthesis reconstructive surgery is currently the patient of choice. Most of the existing semi-pelvic prostheses adopt a customization mode, and the design and processing periods are long and vary from person to person; the assembled prosthesis has the advantages of various specifications and types, convenience for mass production and operation standardization, and gradually becomes the development direction of future pelvic reconstruction.

Surgical methods for assembling prostheses typically employ relatively simple surgical instruments, even Free-Hand manipulation (Free-Hand Technique); due to the lack of surgical instruments, the pelvis reconstruction operation is not easy to operate, the application and popularization are greatly limited, and the difference is not small compared with the standard operations of knee joints, hip joints and the like.

SUMMERY OF THE UTILITY MODEL

The utility model provides a locking apparatus to solve the problem that the operation is difficult to be operated in the pelvis false body reconstruction operation among the prior art.

In order to solve the above problem, the utility model provides a locking apparatus, include: a guide; the sleeve is sleeved on the guide piece and can move along the length direction of the guide piece; a first clamping member disposed at one end of the guide member; the second clamping piece is arranged on the sleeve and is used for being matched with the first clamping piece to clamp the object; the locking portion is arranged on the sleeve and has a locking state and an avoiding state, the locking portion is matched with the guide piece to prevent the sleeve from moving in the direction away from the first clamping piece under the condition that the locking portion is in the locking state, and the locking portion avoids the guide piece under the condition that the locking portion is in the avoiding state.

Further, have on the sleeve and dodge the hole, locking portion includes: the locking piece rotationally sets up on the sleeve, and the one end of locking piece is the locking end, and under the rotation of locking piece, the locking end can get into dodge downthehole in order to cooperate with the guide piece, and the locking end still can deviate from and dodge the hole in order to dodge the guide piece.

Further, the other end of the locking piece is an operation end, and the locking part further comprises: and the elastic piece is positioned between the locking piece and the sleeve, and the elastic piece is abutted with the operating end so as to press the locking end against the guide piece.

Further, the elastic component is the torsional spring, and locking portion still includes: the locking piece is hinged with the sleeve through the first rotating shaft, and the torsion spring is sleeved on the first rotating shaft.

Further, the guide is a rack, and the locking instrument further comprises: and the gear is rotatably arranged on the sleeve and is meshed with the rack so as to drive the sleeve to move on the guide piece.

Further, the locking apparatus further comprises: the second rotating shaft is connected with the gear; and the handle is arranged on the second rotating shaft.

Further, the sleeve comprises: the first cylinder is sleeved on the guide piece; the second barrel is connected with the first barrel, the cavity of the second barrel is communicated with the cavity of the first barrel, and the gear is rotatably arranged in the second barrel.

Further, the locking apparatus further comprises: and the limiting ring is arranged on the second cylinder and/or the gear and is used for limiting the axial direction of the gear.

Further, the first clamping piece and the second clamping piece are both of plate-shaped structures, and the second clamping piece is provided with an opening for the guide piece to pass through.

Further, the first clamping piece is provided with a first clamping surface, the first clamping surface is a plane, the second clamping piece is provided with a second clamping surface, the second clamping surface is a curved surface, and the first clamping surface and the second clamping surface are arranged in opposite directions.

Use the technical scheme of the utility model, a locking apparatus is provided, set up guide piece, sleeve, first clamping piece, second clamping piece and locking portion in locking apparatus, when the operation, the cooperation through first clamping piece and second clamping piece is removed and is pressed from both sides the false body and the ilium tight together to cooperation through locking portion and guide piece carries out one-way spacing to sleeve and second clamping piece, can conveniently carry out the false body compaction like this, fix on horizontal osteotomy face, in order to make things convenient for operations such as art person's installation set screw. Through the technical scheme, the pelvis prosthesis reconstruction operation is convenient to carry out, and the standardization and the popularization of the operation are facilitated. The locking instrument can also be applied to other orthopedic operations with similar requirements.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural diagram of a locking instrument provided by an embodiment of the present invention.

Wherein the figures include the following reference numerals:

11. a guide; 12. a second rotating shaft; 13. a handle; 20. a sleeve; 21. a first cylinder; 22. a second cylinder; 31. a first clamping member; 32. a second clamping member; 40. a lock section; 41. a locking member; 42. a first rotating shaft.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1, an embodiment of the present invention provides a locking device, comprising: a guide 11; a sleeve 20 sleeved on the guide piece 11, wherein the sleeve 20 can move along the length direction of the guide piece 11; a first clamp member 31 provided at one end of the guide member 11; a second clamping member 32 provided on the sleeve 20, the second clamping member 32 being adapted to cooperate with the first clamping member 31 to clamp the object; the locking portion 40 is disposed on the sleeve 20, the locking portion 40 has a locked state and an avoided state, when the locking portion 40 is in the locked state, the locking portion 40 cooperates with the guide member 11 to prevent the sleeve 20 from moving in a direction away from the first clamping member 31, and when the locking portion 40 is in the avoided state, the locking portion 40 avoids the guide member 11.

The technical scheme of this embodiment of application provides a locking apparatus, set up guide 11, sleeve 20, first clamping piece 31, second clamping piece 32 and locking part 40 in locking apparatus, when the operation, move through the cooperation of first clamping piece 31 and second clamping piece 32 and press from both sides the prosthesis and the ilium clamp together to carry out the unilateral to sleeve 20 and second clamping piece 32 through the cooperation of locking part 40 and guide 11 and spacing, can conveniently consolidate the prosthesis like this, fix on horizontal osteotomy face, in order to make things convenient for operation such as art person's installation set screw. Through the technical scheme, the pelvis prosthesis reconstruction operation is convenient to carry out, and the standardization and the popularization of the operation are facilitated. The locking instrument can also be applied to other orthopedic operations with similar requirements.

In this embodiment, the sleeve 20 has an avoiding hole, and the locking portion 40 includes: the locking piece 41 is rotatably arranged on the sleeve 20, one end of the locking piece 41 is a locking end, and the locking end can enter the avoidance hole to be matched with the guide piece 11 under the rotation of the locking piece 41, and can also be separated from the avoidance hole to avoid the guide piece 11. By rotating the locking member 41, the locking end can enter the escape hole and engage the guide member 11, thus preventing the sleeve 20 from moving on the guide member 11 in a direction away from the first clamping member 31. When it is desired to move the sleeve 20 on the guide 11 in a direction away from the first clamping member 31, the locking end can be separated from the guide 11 by rotating the locking member 41.

Further, the other end of the lock member 41 is an operation end, and the lock portion 40 further includes: an elastic member, which is located between the locking member 41 and the sleeve 20, abuts the operating end to press the locking end against the guide 11. This can hold the locking end in a position pressed against the guide 11 by the elastic force of the elastic member, improving reliability. In the present embodiment, the operating end is close to the first clamping member 31 with respect to the locking end.

As shown in fig. 1, the elastic member is a torsion spring, and the locking portion 40 further includes: the first rotating shaft 42, the locking member 41 is hinged with the sleeve 20 through the first rotating shaft 42, and the torsion spring is sleeved on the first rotating shaft 42. Rotation of the lock member 41 is facilitated by the first rotation shaft 42. The operating end of the locking member 41 may be urged by a torsion spring.

In this embodiment, the guide 11 is a rack, and the locking instrument further comprises: and a gear rotatably disposed on the sleeve 20, the gear being engaged with the rack to move the sleeve 20 on the guide 11. By turning the gear, the sleeve 20 and thus the second clamping member 32 can be moved, so that the distance between the second clamping member 32 and the first clamping member 31 can be adjusted to clamp the prosthesis and the bone.

In this embodiment, the locking device further comprises: the second rotating shaft 12 is connected with the gear; and a handle 13 disposed on the second shaft 12. Therefore, the second rotating shaft 12 and the gear can be driven to rotate by rotating the handle 13, and the operation is convenient.

In the present embodiment, the sleeve 20 includes: the first cylinder 21 is sleeved on the guide piece 11; and the second cylinder 22 is connected with the first cylinder 21, the cavity of the second cylinder 22 is communicated with the cavity of the first cylinder 21, and the gear is rotatably arranged in the second cylinder 22. The gear is convenient to assemble through the arrangement, and the meshing position of the gear and the rack can be protected.

Further, the locking apparatus further comprises: and the limiting ring is arranged on the second cylinder 22 and/or the gear and is used for limiting the axial direction of the gear. By means of the stop ring, axial play of the gear in the second cylinder 22 can be avoided.

In the present embodiment, the first clamping member 31 and the second clamping member 32 are both plate-shaped structures, and the second clamping member 32 has an opening through which the guide member 11 passes. Both the first 31 and the second clamping member 32 are provided in a plate-like configuration, facilitating the clamping of the prosthesis and the bone.

Specifically, the first clamping member 31 has a first clamping surface, which is a flat surface, and the second clamping member 32 has a second clamping surface, which is a curved surface, and the first clamping surface and the second clamping surface are disposed opposite to each other. The first clamping surface is matched with the prosthesis, and the second clamping surface is matched with a bone with a curved surface, so that the contact area can be increased, and the clamping reliability can be improved.

In use, first clamping member 31, with the pre-assembled flat surface of the assembled prosthesis, is placed against the horizontal osteotomy surface, locking member 41 of locking portion 40 is raised, and second clamping member 32 and sleeve 20 can be quickly moved over guide 11 so that second clamping member 32 quickly abuts the upper iliac crest; the locking member 41 is then lowered to prevent the second gripping member 32 from retracting, and the gear is rotated until the prosthesis is compacted and fixed on the horizontal osteotomy surface.

The scheme realizes the orthopedic surgical instrument which can be quickly and reliably locked in a larger range (more than 20 cm), so that the standardization of the pelvis reconstruction operation is advanced one step forward, the application and the popularization of the assembled prosthesis are facilitated, and more patients can avoid the tragedy of amputation and keep away from the invasion of various malignant bone tumors. The scheme can also be used for orthopedic operations with similar requirements.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A locking instrument, comprising:

a guide (11);

a sleeve (20) sleeved on the guide part (11), wherein the sleeve (20) can move along the length direction of the guide part (11);

a first clamping member (31) provided at one end of the guide member (11);

a second clamping member (32) arranged on the sleeve (20), the second clamping member (32) being adapted to cooperate with the first clamping member (31) to clamp an object;

the locking device comprises a locking part (40) arranged on the sleeve (20), wherein the locking part (40) has a locking state and an avoiding state, when the locking part (40) is in the locking state, the locking part (40) is matched with the guide piece (11) to prevent the sleeve (20) from moving in the direction away from the first clamping piece (31), and when the locking part (40) is in the avoiding state, the locking part (40) avoids the guide piece (11).

2. The locking device of claim 1, wherein the sleeve (20) has an relief hole therein, and the locking portion (40) comprises:

locking piece (41), rotationally set up on sleeve (20), the one end of locking piece (41) is the locking end under the rotation of locking piece (41), the locking end can get into dodge downthehole with guide (11) cooperation, the locking end still can deviate from dodge the hole in order to dodge guide (11).

3. The locking instrument as claimed in claim 2, characterized in that the other end of the locking member (41) is an operating end, the locking portion (40) further comprising:

an elastic member located between the locking member (41) and the sleeve (20), the elastic member abutting the operating end to press the locking end against the guide (11).

4. The locking instrument of claim 3, wherein the resilient member is a torsion spring, and the lockout portion (40) further comprises:

the locking piece (41) is hinged to the sleeve (20) through the first rotating shaft (42), and the torsion spring is arranged on the first rotating shaft (42) in a sleeved mode.

5. Locking instrument according to claim 1, characterized in that the guide (11) is a toothed rack, the locking instrument further comprising:

a gear wheel rotatably arranged on the sleeve (20), the gear wheel engaging with the rack to move the sleeve (20) on the guide (11).

6. The locking instrument of claim 5, further comprising:

the second rotating shaft (12) is connected with the gear;

and the handle (13) is arranged on the second rotating shaft (12).

7. Locking instrument according to claim 5, characterized in that said sleeve (20) comprises:

the first cylinder (21), the said first cylinder (21) is fitted over the said guide part (11);

the second cylinder (22) is connected with the first cylinder (21), the cavity of the second cylinder (22) is communicated with the cavity of the first cylinder (21), and the gear is rotatably arranged in the second cylinder (22).

8. The locking instrument of claim 7, further comprising:

the limiting ring is arranged on the second cylinder (22) and/or the gear and used for limiting the axial direction of the gear.

9. Locking instrument according to claim 1, characterized in that said first gripping member (31) and said second gripping member (32) are each a plate-like structure, said second gripping member (32) having an opening for the passage of said guide (11).

10. Locking device according to claim 9, characterized in that the first clamping part (31) has a first clamping surface which is plane and the second clamping part (32) has a second clamping surface which is curved, the first and second clamping surfaces being arranged opposite each other.