CN115539471A - Adjustable angle locking device and retractor with locking device - Google Patents

Abstract

The invention relates to the technical field of medical instruments, in particular to an angle-adjustable locking device and a retraction device comprising the same. The device comprises a support connecting block, a support connecting block mounting mechanism, a retraction arm connecting block and a retraction arm adjusting mechanism, wherein the support connecting block comprises a groove; the bracket connecting block mounting mechanism comprises a base and a connecting bolt, and the base is clamped with the bottom of the connecting bolt; the retraction arm connecting block is provided with a retraction arm clamping groove, the retraction arm connecting block is provided with an extrusion groove, and the retraction arm connecting block is provided with a through hole in a penetrating manner; the retracting arm adjusting mechanism comprises an adjusting block and a connecting nut, the adjusting block is mounted on the connecting bolt, and one end of the connecting bolt penetrates through the adjusting block, then penetrates through the retracting arm connecting block and then is in threaded connection with the connecting nut; first spacing tooth is provided with along the circular arc array on the regulating block, it is provided with the spacing tooth of second along the arc array to pull open the arm connecting block. The invention has convenient adjustment of the position and the angle of the retracting arm and high working efficiency.

Description

Adjustable angle locking device and retractor with locking device

technical field

The invention relates to the technical field of medical instruments, in particular to an adjustable angle locking device and a retracting device including the locking device.

Background technique

The goals of spinal surgery are to correct spinal deformities, relieve pain, stabilize the spine, and protect nerves. Posterior spinal internal fixation is one of the main treatment methods, and the safety and effectiveness of the posterior spinal internal fixation system products used in the operation directly affect the treatment effect of the disease.

The retractor is a commonly used tool in the spinal posterior internal fixation system. The existing retractor is provided with a retracting arm, which is generally locked by a locking device. The existing retracting arm locking device and retractor There are also some deficiencies in the retractor in actual use, such as: (1) the retracting arm needs to be adjusted in angle and position during use, and the locking device in the existing retractor is used to adjust the retracting arm position and angle. (2) the clamping force of the locking device to the retracting arm is not adjustable; (3) the overall structural design of the retractor is unreasonable, the retracting force is small, and the work efficiency is low.

Contents of the invention

The object of the present invention is to provide an adjustable angle locking device and a retracting device containing the locking device, which can overcome the deficiencies of the prior art and can easily adjust the position, up and down angle, and left and right angles of the retracting arm, which is beneficial to the retraction arm. The clamping strength of the opening arm can be adjusted, the overall structure of the retractor is designed reasonably, the operation is convenient, the retracting strength is appropriate, and the working efficiency is high.

The technical scheme that the present invention solves its technical problem to take is:

An adjustable angle locking device, comprising a bracket connection block, a bracket connection block installation mechanism, a retracting arm connection block and a retraction arm adjustment mechanism, the bracket connection block installation mechanism and the retraction arm adjustment mechanism are detachably connected, in:

The bracket connection block includes a slot for installing a bracket;

The installation mechanism of the bracket connection block includes a base and a connection bolt, the base is an elastic base, which can be clamped with the bottom of the connection bolt, and the accommodation cavity formed after the base and the connection bolt are clamped has an interference fit with the outer wall of the bracket connection block, Under the action of external force, the connecting block of the bracket can rotate in the accommodation cavity, so that the up and down angle between the whole body of the adjustable angle locking device and the bracket can be adjusted under the action of external force;

The retracting arm connecting block is provided with a retracting arm slot, and the retracting arm connecting block is provided with an extrusion groove connected with the retracting arm slot, and the retracting arm connecting block is provided with a perforation, and the perforation passes through the Extrusion groove;

The adjusting mechanism of the retracting arm includes an adjustment block and a connecting nut, the adjusting block is installed on the connecting bolt, and one end of the connecting bolt passes through the adjusting block and then passes through the connecting block of the retracting arm, and then is threadedly connected with the connecting nut, retracting The arm is stuck in the retracting arm slot, and the locking strength of the retracting arm slot to the retracting arm can be adjusted by adjusting the connecting nut;

The adjusting block is provided with first limiting teeth along an arc array, the end face of the connecting block of the retracting arm close to the adjusting block is provided with second limiting teeth along an arc array, the first limiting teeth and the second The two limit teeth cooperate with the clamping connection. When the connecting nut is loosened, the misalignment between the connecting block and the adjusting block of the retracting arm can be adjusted. After adjusting the angle, re-tighten the connecting nut. Through the first limit tooth and the second The dislocation adjustment of the limit teeth realizes the adjustment of the left and right angles of the retracting arm;

During use, the locking position of the retracting arm, the left and right angles of the retracting arm, and the up and down angles of the retracting arm can all be adjusted conveniently, and the clamping force of the retracting arm can be adjusted.

Further, the main body of the base is in a "U" shape, the "U"-shaped inner cavity of the base is set in a circle, the opening end of the base is provided with a first claw, and one end of the connecting bolt is provided with a second claw , the first claw and the second claw can be plugged together, and the outer surface of the connecting bolt close to the inner cavity of the base forms a circular accommodation cavity with the inner cavity of the base after the clamping, and the installation between the base and the connecting bolt is convenient.

Further, the main body of the bracket connection block is circular, and an anti-slip structure is arranged in the slot of the bracket connection block.

Further, the installation mechanism of the bracket connecting block also includes a ball stud, which is installed on one end of the connecting bolt, and the bracket connecting block is provided with a first chute, and one end of the ball stud is inserted into the first chute , under the action of external force, the ball stud slides in the first chute to realize the adjustment of the upper and lower angular positions of the connecting block of the retracting arm.

Further, the central angle of the first chute is 30-40°, preferably 30°, the ball stud is located in the middle of the first chute in the initial assembly state, and the base can rotate ±15° under the action of external force.

Further, the regulating block is provided with a pin, and the connecting block of the retracting arm is provided with a second chute, and the pin is inserted into the second chute, and the cooperation between the pin and the second chute makes the retracting arm The adjustment of the angle between the connection block and the adjustment block has a guiding effect, and forms a maximum adjustment angle limit, and the central angle of the second chute is 30-50°.

Further, an anti-slip structure is provided in the drawing slot of the retracting arm.

Further, the installation mechanism of the bracket connection block also includes a nut cap, and the nut cap is connected to the end of the connecting bolt away from the base.

A retracting device, including an adjustable angle locking device, also includes a ring bracket and a retracting arm, wherein:

The annular bracket is provided with several adjustable angle locking devices, and the annular bracket is connected with the bracket connecting block of the adjustable angle locking device;

The retracting arm is locked in the retracting arm slot of the connecting block of the retracting arm.

Further, the annular bracket has a rectangular ring structure, and the four corners of the rectangle have a circular arc transition; the retracting arm is arranged on the corresponding two sides of the annular bracket; the retracting arm includes a connecting arm and a retracting claw, The connecting arm is connected to the card slot of the retracting arm, and the retracting claw is located inside the ring bracket. The structure of the retractor is reasonable, and multiple retracting arms are set. work efficiency.

The beneficial effects of the present invention are: compared with the prior art, the angle-adjustable locking device and the retracting device containing the locking device of the present invention have the following advantages: the position and the up and down angle of the retracting arm can be easily adjusted , The left and right angles, the clamping strength of the retractor arm can be adjusted, the overall structure design of the retractor is reasonable, the operation is convenient, the retraction strength is appropriate, and the work efficiency is high.

Description of drawings

Fig. 1 is the overall structure schematic diagram of embodiment 1 of the present invention;

Fig. 2 is a schematic explosion diagram of the structure of Embodiment 1 of the present invention;

Fig. 3 is a schematic exploded view of the structure from another angle of Embodiment 1 of the present invention;

4 is a schematic diagram of the overall structure of Embodiment 2 of the present invention;

Among them, 1 bracket connecting block, 101 slotting, 102 first chute, 2 retracting arm connecting block, 201 retracting arm slot, 202 extrusion groove, 203 perforation, 204 second limit tooth, 205 second sliding Slot, 3 base, 301 first claw, 4 connecting bolt, 401 second claw, 5 adjusting block, 501 first limit tooth, 6 connecting nut, 7 ball pin, 8 column pin, 9 nut cap, 10 ring supports, 11 retractable arms.

detailed description

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

Example 1

In the embodiment shown in Figures 1-3, an adjustable angle locking device includes a bracket connecting block 1, a bracket connecting block installation mechanism, a retracting arm connecting block 2 and a retracting arm adjustment mechanism, and a bracket connecting block installing mechanism is detachably connected to the retractor arm adjustment mechanism, wherein:

The support connecting block 1 includes a slot 101 for installing a support;

The bracket connection block installation mechanism includes a base 3 and a connecting bolt 4, the base 3 is an elastic base 3, which can be clamped with the bottom of the connecting bolt 4, and the receiving cavity formed after the base 3 and the connecting bolt 4 are clamped is connected to the bracket The outer wall of the block 1 is interference fit, and the bracket connecting block 1 can rotate in the accommodation chamber under the action of an external force, so that the upper and lower angles between the whole of the adjustable angle locking device and the bracket can be adjusted under the action of an external force;

The retracting arm connecting block 2 is provided with a retracting arm slot 201, and the retracting arm connecting block 2 is provided with an extrusion groove 202 connected with the retracting arm slot 201, and the retracting arm connecting block 2 runs through a There is a perforation 203, and the perforation 203 passes through the extrusion groove 202; the connecting block of the retracting arm is also provided with an extrusion groove two, and the opening direction of the extrusion groove two is opposite to the opening direction of the extrusion groove, and the extrusion groove and the extrusion groove The two pressure grooves are arranged alternately, which is convenient for the pulling arm card groove to stably squeeze the pulling arm when the connecting nut is locked;

The retracting arm adjustment mechanism includes an adjusting block 5 and a connecting nut 6, the adjusting block 5 is installed on the connecting bolt 4, and one end of the connecting bolt 4 passes through the adjusting block 5 and then passes through the retracting arm connecting block 2, and then connects with The connecting nut 6 is threaded, the retracting arm is stuck in the retracting arm slot 201, and the locking strength of the retracting arm slot 201 to the retracting arm is adjusted by adjusting the connecting nut 6;

The adjustment block 5 is provided with a first stop tooth 501 along an arc array, and the end face of the retracting arm connecting block 2 close to the adjustment block 5 is provided with a second stop tooth 204 along an arc array. The stopper teeth 501 and the second stopper teeth 204 are snapped together. When the connecting nut 6 is loosened, the misalignment between the connecting block 2 and the adjusting block 5 of the retracting arm can be adjusted. After the angle is adjusted, the connecting nut 6 is re-tightened. Yes, the adjustment of the left and right angles of the retracting arm can be realized through the misalignment adjustment of the first stop tooth 501 and the second stop tooth 204;

During use, the locking position of the retracting arm, the left and right angles of the retracting arm, and the up and down angles of the retracting arm can all be adjusted conveniently, and the clamping force of the retracting arm can be adjusted.

In this embodiment, the main body of the base 3 is in a "U" shape, the "U"-shaped inner cavity of the base 3 is set in a circle, the opening end of the base 3 is provided with a first claw 301, and the connecting bolt 4 One end is provided with a second claw 401, and the first claw 301 and the second claw 401 can be plugged in. After the clip is connected, the outer surface of the connecting bolt 4 close to the inner cavity of the base 3 and the inner cavity of the base 3 form a circular accommodating Cavity, easy installation between the base 3 and the connecting bolt 4.

In this embodiment, the main body of the bracket connecting block 1 is circular, and an anti-slip structure is provided in the slot 101 of the bracket connecting block 1 .

In this embodiment, the installation mechanism of the bracket connecting block also includes a ball stud 7, and the ball stud 7 is installed on one end of the connecting bolt 4. The bracket connecting block 1 is provided with a first chute 102, and the ball stud 7 One end of the ball stud 7 is inserted into the first chute 102, and under the action of an external force, the ball stud 7 slides in the first chute 102 to realize the adjustment of the upper and lower angular positions of the retracting arm connecting block 2.

In this embodiment, the central angle of the first chute 102 is 30-40°, preferably 30°, the ball stud 7 is located in the middle of the first chute 102 in the initial assembly state, and the base 3 can rotate under the action of an external force ±15°.

In this embodiment, the regulating block 5 is provided with a pin 8, and the connecting block 2 of the retracting arm is provided with a second chute 205, the pin 8 is inserted into the second chute 205, and the pin 8 and the first The cooperation of the two chute 205 makes the adjustment of the angle between the connecting block 2 and the adjusting block 5 of the retracting arm play a guiding role, and forms a maximum adjustment angle limitation. The central angle of the second chute 205 is 30-50°.

In this embodiment, an anti-skid structure is provided in the retracting arm slot 201 .

In this embodiment, the bracket connection block installation mechanism further includes a nut cap 9 connected to the end of the connecting bolt 4 away from the base 3 .

Example 2

As shown in Figure 4, a retracting device includes an adjustable angle locking device, and also includes an annular bracket 10 and a retracting arm 11, wherein:

The annular bracket 10 is provided with several adjustable angle locking devices, and the annular bracket 10 is connected with the bracket connecting block 1 of the adjustable angle locking device;

The retracting arm 11 is locked in the retracting arm slot 201 of the retracting arm connecting block 2 .

In this embodiment, the annular bracket 10 is a rectangular ring structure, and the four corners of the rectangle are arc transitioned; the retracting arm 11 is arranged on the corresponding two sides of the annular bracket 10; the retracting arm 11 includes a connection arm and retracting claw, the connecting arm is connected in the retracting arm slot 201, the retracting claw is positioned at the inner side of the ring support, the structure of the retractor is set reasonably, a plurality of retracting arms are set, the retracting force is suitable, the position of the retracting arm, Angle adjustment is convenient, greatly improving work efficiency.

The above-mentioned specific embodiments are only specific cases of the present invention. The scope of patent protection of the present invention includes but is not limited to the product form and style of the above-mentioned specific embodiments. Appropriate changes or modifications made should fall within the scope of patent protection of the present invention.

Claims (10)

1. An adjustable angle locking device is characterized in that: it comprises a support connection block, a support connection block installation mechanism, a retracting arm connection block and a retraction arm adjustment mechanism, a support connection block installation mechanism and a retraction arm adjustment mechanism. between detachable connections, where: The bracket connection block includes a slot for installing a bracket; The installation mechanism of the bracket connection block includes a base and a connection bolt, the base is an elastic base, which can be clamped with the bottom of the connection bolt, and the accommodation cavity formed after the base and the connection bolt are clamped has an interference fit with the outer wall of the bracket connection block, The support connecting block can rotate in the accommodation cavity under the action of external force; The retracting arm connecting block is provided with a retracting arm slot, and the retracting arm connecting block is provided with an extrusion groove connected with the retracting arm slot, and the retracting arm connecting block is provided with a perforation, and the perforation passes through the Extrusion groove; The adjusting mechanism of the retracting arm includes an adjusting block and a connecting nut, the adjusting block is installed on the connecting bolt, and one end of the connecting bolt passes through the adjusting block and then passes through the connecting block of the retracting arm, and then is threadedly connected with the connecting nut; The adjusting block is provided with first limiting teeth along an arc array, the end face of the connecting block of the retracting arm close to the adjusting block is provided with second limiting teeth along an arc array, the first limiting teeth and the second The two limit teeth cooperate with the clamping connection. 2. An adjustable angle locking device according to claim 1, characterized in that: the main body of the base is in the shape of a "U", the inner cavity of the "U" shape of the base is set as a circle, and the open end of the base A first claw is provided, and one end of the connecting bolt is provided with a second claw, the first claw and the second claw can be plugged in, and the outer surface of the connecting bolt close to the inner cavity of the base and the inner cavity of the base are connected after clamping. A circular housing cavity is formed. 3. An adjustable angle locking device according to claim 2, characterized in that: the main body of the bracket connecting block is circular, and an anti-skid structure is arranged in the slot of the bracket connecting block. 4. An adjustable angle locking device according to claim 1, characterized in that: the installation mechanism of the bracket connection block further includes a ball stud, the ball stud is installed on one end of the connecting bolt, and the bracket connection block A first chute is arranged on the top, and one end of the ball stud is inserted into the first chute. 5. An adjustable angle locking device according to claim 4, characterized in that: the central angle of the first chute is 30-40°. 6. An adjustable angle locking device according to claim 1, characterized in that: the adjusting block is provided with a pin, and the connecting block of the retracting arm is provided with a second chute into which the pin is inserted. In the second chute. 7 . The adjustable angle locking device according to claim 1 , wherein an anti-slip structure is arranged in the slot of the retracting arm. 8 . 8 . The adjustable angle locking device according to claim 1 , wherein the mounting mechanism of the bracket connecting block further comprises a nut cap, and the nut cap is connected to an end of the connecting bolt away from the base. 9. A retracting device, characterized in that it includes an adjustable angle locking device according to any one of claims 1-7, and also includes a ring bracket and a retracting arm, wherein: The annular bracket is provided with several adjustable angle locking devices, and the annular bracket is connected with the bracket connecting block of the adjustable angle locking device; The retracting arm is locked in the retracting arm slot of the connecting block of the retracting arm. 10. A retracting device according to claim 9, characterized in that: the annular bracket is a rectangular ring structure, and the four corners of the rectangle are arc-shaped; the retracting arm is arranged on the corresponding side of the annular bracket. On both sides; the retracting arm includes a connecting arm and a retracting claw, the connecting arm is connected in the slot of the retracting arm, and the retracting claw is located inside the ring bracket.

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