CN210644158U

CN210644158U - Bone cement screw propeller with pressure release function

Info

Publication number: CN210644158U
Application number: CN201921147258.9U
Authority: CN
Inventors: 夏永辉
Original assignee: First Hospital of China Medical University
Current assignee: First Hospital of China Medical University
Priority date: 2019-07-22
Filing date: 2019-07-22
Publication date: 2020-06-02
Anticipated expiration: 2029-07-22

Abstract

The utility model discloses a bone cement screw propeller with pressure release function, including the cylinder, the inner chamber right side spiro union of cylinder has the thread bush, the inner chamber spiro union of thread bush has the screw rod, the inner chamber joint that the left side of screw rod extends to the cylinder has the piston, the left side embedding of cylinder has the casing, first round hole has all been seted up on the left and right sides outer wall top of casing, the second round hole has all been seted up to the left and right sides outer wall bottom of casing, is located the spiro union has been in the second round hole of casing left side bottom, the inner chamber of casing is pegged graft and is had the cylinder piece, the outer wall top of cylinder piece has seted up the third round hole along the fore-and-aft direction, and third round hole and first round hole are on same water flat line. This bone cement screw propeller with pressure release function can realize the nimble injection of bone cement, has to pour into and cuts off the function, can prevent the seepage of bone cement, avoids endangering the lumbar vertebrae health of patient, has satisfied the demand that bone cement pours into greatly.

Description

Bone cement screw propeller with pressure release function

Technical Field

The utility model relates to the technical field of medical equipment, specifically be a bone cement screw propeller with pressure release function.

Background

Bone cement is a common name of bone cement, the bone cement is a medical material used for orthopedic surgery, and has a popular name because part of physical properties and solidified appearance and properties are rather like white cement used for building and decoration.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bone cement screw propeller with pressure release function to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a bone cement spiral propeller with a pressure release function comprises a needle cylinder, wherein a threaded sleeve is screwed on the right side of an inner cavity of the needle cylinder, a screw rod is screwed in the inner cavity of the threaded sleeve, the left side of the screw rod extends to the inner cavity of the needle cylinder in a clamping manner and is connected with a piston, a shell is embedded in the left side of the needle cylinder, first round holes are formed in the top ends of the outer walls of the left side and the right side of the shell, second round holes are formed in the bottom ends of the outer walls of the left side and the right side of the shell, a connector is screwed in the second round hole at the bottom end of the left side of the shell, a cylindrical block is inserted into the inner cavity of the shell, a third round hole is formed in the top end of the outer wall of the cylindrical block in the front-back direction and is in the same horizontal line with the first round hole, a fourth round hole communicated with, a round rod is screwed at the center of the top end of the cylindrical block, the top end of the round rod penetrates through the inner cavity of the sealing ring and extends out of the upper surface of the shell, the outer side of the upper surface of the shell is connected with a sleeve through a screw, the bottom end of the inner wall of the sleeve is provided with an arc-shaped groove, the upper surface of the sleeve is provided with clamping grooves along the circumferential direction, the bottom end of the outer wall of the round rod is clamped with a round ring, the side wall of the circular ring is screwed with a limit block inserted with the arc-shaped groove, the middle part of the outer wall of the circular rod is sleeved with a spring, the bottom end of the spring is clamped with the top end of the circular ring, the top end of the outer wall of the circular rod is provided with slideways along the circumferential direction, one part of a sliding block is inserted at the bottom end of the inner cavity of the sliding way, the other part of the sliding block is connected with a round cap through a screw, and the round cap is sleeved on the outer wall of the round rod, the bottom end of the round cap is clamped with the top end of the spring, and the left side and the right side of the outer wall of the round cap are respectively connected with a clamping block which is in plug-in connection with the clamping groove through screws.

Preferably, the inner cavity of the shell is cylindrical, and the cylindrical block is inserted into the shell in a matching manner.

Preferably, the maximum swinging angle of the limiting block in the arc-shaped groove is 90 degrees.

Preferably, the number of slide is four, and four the slide is seted up on the outer wall top of round bar according to clockwise every minute.

Preferably, the maximum distance of the up-and-down movement of the sliding block is greater than the height of the inner cavity of the clamping groove.

Compared with the prior art, the beneficial effects of the utility model are that: the bone cement screw propeller with the pressure release function is characterized in that when the screw propeller is actually used, the screw propeller rotates clockwise, the screw propeller can push the piston to move towards the left side, so that bone cement in a needle cylinder can be guided into lumbar vertebrae through the guide pipe, when the lumbar vertebrae has bone cement leakage, the round cap is lifted, the clamping block moves upwards to be separated from the clamping groove, the round cap rotates anticlockwise, the limiting block and the cylindrical block can rotate anticlockwise through the matching of the sliding block and the round rod, when the limiting block is contacted with the inner wall of the arc-shaped groove, the third round hole and the fourth round hole rotate anticlockwise by 90 degrees respectively, the clamping block is inserted into the clamping groove again through the tensile force of the spring, the second round hole is sealed by the cylindrical block, the injection of the bone cement is stopped, the third round hole connects the two first round holes, the bone cement with pressure in the needle cylinder is discharged, so that the flexible injection of the bone cement is realized, the injection cut-off function, avoids the harm to the lumbar health of the patient and greatly meets the requirement of bone cement injection.

Drawings

FIG. 1 is a front cross-sectional view of the present invention;

FIG. 2 is an enlarged view of the point A of the present invention;

FIG. 3 is a schematic cross-sectional view of a sleeve according to the present invention;

fig. 4 is a top view of the sleeve of the present invention.

In the figure: 1. the device comprises a needle cylinder, 2, a threaded sleeve, 3, a screw rod, 4, a piston, 5, a shell, 6, a first round hole, 7, a second round hole, 8, a connector, 9, a cylindrical block, 10, a third round hole, 11, a fourth round hole, 12, a sealing ring, 13, a round rod, 14, a sleeve, 15, an arc-shaped groove, 16, a clamping groove, 17, a round ring, 18, a limiting block, 19, a spring, 20, a slide way, 21, a sliding block, 22, a round cap, 23 and a clamping block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a bone cement screw propeller with pressure release function comprises a needle cylinder 1, wherein bone cement is stored in the needle cylinder 1, a threaded sleeve 2 is screwed on the right side of an inner cavity of the needle cylinder 1, the threaded sleeve 2 is dismounted, the bone cement can be added into the needle cylinder 1 to facilitate secondary treatment, a screw rod 3 is screwed in the inner cavity of the threaded sleeve 2, when the screw rod 3 rotates clockwise or anticlockwise on the threaded sleeve 2, the screw rod 3 can drive a piston 4 to move leftwards or rightwards, so that the bone cement can be discharged and sucked, the left side of the screw rod 3 extends to the inner cavity of the needle cylinder 1 and is clamped with the piston 4, a shell 5 is embedded in the left side of the needle cylinder 1, first round holes 6 are respectively formed in the top ends of the outer walls of the left side and the right side of the shell 5, second round holes 7 are respectively formed in the bottom ends of the outer walls of the left side and the right side of the shell 5, a connector 8 is screwed in the second round hole 7, thereby bone cement can be driven into the lumbar vertebrae through the guide pipe, the inner cavity of the shell 5 is inserted with the cylindrical block 9, the top end of the outer wall of the cylindrical block 9 is provided with a third round hole 10 along the front-back direction, the third round hole 10 and the first round hole 6 are on the same horizontal line, the inner diameter length of the third round hole 10 is the same as that of the first round hole 6, the bottom end of the outer wall of the cylindrical block 9 is provided with a fourth round hole 11 communicated with the second round hole 7 along the left-right direction, the inner diameter length of the second round hole 7 is the same as that of the fourth round hole 11, the central position of the top end of the inner cavity of the shell 5 is embedded with the sealing ring 12, the shell 5 is sealed by the sealing ring 12 to prevent bacteria from entering, the central position of the top end of the cylindrical block 9 is screwed with the round rod 13, the top end of the round rod 13 penetrates through the inner cavity of the sealing ring 12 and extends, the upper surface of the sleeve 14 is circumferentially provided with clamping grooves 16, the bottom end of the outer wall of the round rod 13 is clamped with a round ring 17, the side wall of the round ring 17 is screwed with a limiting block 18 which is inserted with the arc-shaped groove 15, the middle part of the outer wall of the round rod 13 is sleeved with a spring 19, the spring 19 is an extension spring, the elastic coefficient is 35N/CM, the spring 19 generates elastic deformation after being stretched or extruded and recovers to an initial state after external force is removed, the spring 19 provides downward tension for the round cap 22, the bottom end of the spring 19 is clamped with the top end of the round ring 17, the top end of the outer wall of the round rod 13 is circumferentially provided with a slide way 20, the round cap 22 can move up and down through the matching of the slide way 20 and the slide block 21, the round cap 22 can be prevented from being separated from the round rod 13, the bottom end of the inner cavity of the slide way 20 is inserted with a part of the slide block 21, the other part of, the bottom of round cap 22 and the top joint of spring 19, the equal screwed connection in outer wall left and right sides of round cap 22 has the fixture block 23 of pegging graft with draw-in groove 16, can fix round cap 22 through the cooperation of fixture block 23 and draw-in groove 16 to realize fixing cylindrical block 9.

Preferably, the inner cavity of the shell 5 is cylindrical, and the cylindrical block 9 is inserted into the shell 5 in a matching manner, so that the sealing performance between the cylindrical block 9 and the shell 5 is improved, and the bone cement is prevented from leaking.

As preferred scheme, further, the biggest swing angle of stopper 18 in arc wall 15 is 90 degrees, and is spacing to the removal of round bar 13, and then realizes spacingly to cylinder piece 9 to can realize closing and opening of first round hole 6 and second round hole 7, draw-in groove 23 after being convenient for to remove simultaneously inserts in draw-in groove 16.

Preferably, the number of the slide ways 20 is four, and the four slide ways 20 are arranged at the top end of the outer wall of the round rod 13 at intervals of 90 degrees clockwise, so that the four slide ways 20 improve the fixation of the round cap 22, and the round cap 22 and the round rod 9 can be stably and indirectly connected.

Preferably, the maximum distance of the up and down movement of the slider 21 is larger than the height of the inner cavity of the slot 16, so that the latch 23 can be lifted to a height capable of being separated from the slot 16 when the round cap 22 is lifted upwards.

The detailed connection means is a technique known in the art, and the following mainly describes the working principle and process, and the specific operation is as follows.

When the bone cement injection needle is used, the connector 8 is connected with a conduit inserted into a lumbar vertebra, the screw rod 3 is rotated clockwise, the screw rod 3 drives the piston 4 to rotate and simultaneously move towards the left side to extrude bone cement in the needle cylinder 1, the bone cement passes through the second round hole 7 and enters the lumbar vertebra through the conduit, the injection of the bone cement can be realized, when the bone cement leaks from the lumbar vertebra, the round cap 22 is pulled upwards, the sliding block 21 and the clamping block 23 are driven to move upwards and stretch the spring 19 until the clamping block 23 is separated from the clamping groove 16, the round cap 22 is rotated anticlockwise, the round ring 17 and the cylindrical block 9 are driven to rotate anticlockwise until the limiting block 18 rotates anticlockwise by 90 degrees along with the round ring 17 and contacts with the other end of the arc-shaped groove 15, at the moment, the third round hole 10 and the fourth round hole 11 rotate anticlockwise by 90 degrees respectively, the round cap 22 is loosened, the spring 19 drives the clamping block 23 to move downwards and insert into the clamping groove 16 under the action of self tension, the cylinder piece 9 seals second round hole 7, and third round hole 10 communicates with first round hole 6 simultaneously to stop to injecting bone cement in the pipe, first round hole 6 can release the bone cement that has pressure moreover, thereby makes the device can stop the leading-in of bone cement the very first time, can prevent effectively that bone cement from leaking, protects the patient, more does benefit to the popularization.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation; also, unless expressly stated or limited otherwise, the terms "snap" and "pivot" and "snap" and "weld" and "screw" are to be construed broadly, e.g., as a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a bone cement screw propeller with pressure release function, includes cylinder (1), its characterized in that: the inner cavity right side spiro union of cylinder (1) has thread bush (2), the inner cavity spiro union of thread bush (2) has screw rod (3), the inner chamber joint that the left side of screw rod (3) extended to cylinder (1) has piston (4), the left side embedding of cylinder (1) has casing (5), first round hole (6) have all been seted up on the left and right sides outer wall top of casing (5), second round hole (7) have all been seted up to the left and right sides outer wall bottom of casing (5), lie in threaded union joint (8) in second round hole (7) of casing (5) left side bottom, the inner cavity of casing (5) is pegged graft and is had cylinder piece (9), third round hole (10) have been seted up along the fore-and-aft direction in the outer wall top of cylinder piece (9), and third round hole (10) and first round hole (6) are on same water flat line, the outer wall bottom of cylinder piece (9) has seted up along the left and right directions fourth round hole (11) that communicate with second round hole (7) is ) The inner cavity top end center position of the shell (5) is embedded with a sealing ring (12), the top end center position of the cylindrical block (9) is screwed with a round rod (13), the top end of the round rod (13) penetrates through the inner cavity of the sealing ring (12) to extend out of the upper surface of the shell (5), a sleeve (14) is connected with an outer side screw of the upper surface of the shell (5), an arc-shaped groove (15) is formed in the bottom end of the inner wall of the sleeve (14), a clamping groove (16) is formed in the upper surface of the sleeve (14) along the circumferential direction, a circular ring (17) is clamped at the bottom end of the outer wall of the round rod (13), a limiting block (18) which is connected with the arc-shaped groove (15) in a screwed mode is connected on the side wall of the circular ring (17), a spring (19) is sleeved in the middle of the outer wall of the round rod (13), the bottom end of the spring (19) is clamped with the top end of the, the bottom end of the inner cavity of the slide way (20) is connected with one part of the slide block (21) in an inserting mode, the other part of the slide block (21) is connected with a round cap (22) through screws, the round cap (22) is connected to the outer wall of the round rod (13) in a sleeved mode, the bottom end of the round cap (22) is connected with the top end of the spring (19) in a clamping mode, and clamping blocks (23) connected with the clamping grooves (16) in an inserting mode are connected to the left side and the right side of the outer wall of the round cap (22.

2. The bone cement screw propeller with pressure release function of claim 1, characterized in that: the inner cavity of the shell (5) is cylindrical, and the cylindrical block (9) is in adaptive insertion connection with the shell (5).

3. The bone cement screw propeller with pressure release function of claim 1, characterized in that: the maximum swinging angle of the limiting block (18) in the arc-shaped groove (15) is 90 degrees.

4. The bone cement screw propeller with pressure release function of claim 1, characterized in that: the quantity of slide (20) is four, and four slide (20) are seted up at the outer wall top of round bar (13) according to clockwise every 90 degrees.

5. The bone cement screw propeller with pressure release function of claim 1, characterized in that: the maximum distance of the up-and-down movement of the sliding block (21) is larger than the height of the inner cavity of the clamping groove (16).