CN212699095U

CN212699095U - Integral type bone cement injection device

Info

Publication number: CN212699095U
Application number: CN202020766011.1U
Authority: CN
Inventors: 刘家兴; 黄佳; 张雷雷
Original assignee: Jingzhou Yihai Technology Co ltd
Current assignee: Jingzhou Yihai Technology Co ltd
Priority date: 2020-05-11
Filing date: 2020-05-11
Publication date: 2021-03-16
Anticipated expiration: 2030-05-11

Abstract

The utility model relates to the technical field of medical equipment, a integral type bone cement injection device is disclosed, be provided with the syringe casing that injection nozzle and other end are the opening form, can dismantle end cover, injection mechanism, the rabbling mechanism of setting at the opening part of syringe casing including one end. The utility model has the advantages of it is following and effect: firstly, placing bone cement in a syringe shell; an end cover connected with an injection mechanism and a stirring mechanism is arranged; then the stirring shaft core is driven to rotate by the stirring handle, and the bone cement in the syringe shell is stirred by the stirrer; finally, after the stirring is finished, the relative position between the injection piston and the end cover is changed through the injection handle, so that the bone cement in the shell of the injector is extruded out, and the injection of the bone cement is realized; therefore, the stirring and injection of the bone cement are integrated to reduce the viscosity loss of the bone cement, and the operation is simple.

Description

Integral type bone cement injection device

Technical Field

The utility model relates to the technical field of medical equipment, in particular to integral type bone cement injection device.

Background

In bone surgery, it is often necessary to mix bone cement and inject it into a patient. Bone cement need stir in stirred vessel and transfer to the syringe in, but when bone cement shifts to the in-process of syringe and transfer back bone cement not in time inject, all can lead to bone cement's gluing to lose, finally influences bone cement's performance and clinical effect.

At present, Chinese patent with an authorization notice number of CN202270056 and an authorization notice date of 2012 6, 13 discloses a bone cement portable stirring and injecting device, wherein a stirring and injecting structure is integrated, an injecting needle head can be replaced to immediately inject after stirring is completed, the operation time is shortened, and the adhesion loss of bone cement is reduced.

The portable bone cement stirring and injecting device has the following use process: placing a stirring frame with a peripheral stirring rod and a middle stirring rod at the bottom of an injector body, filling bone cement slurry into an inner cavity of the injector body, then placing an injector piston with an injector push rod into the inner cavity of the injector body (the stirring handle is not arranged on the injector push rod at the moment), sleeving a hole on the injector piston on the peripheral stirring rod and the middle stirring rod and covering the bone cement slurry, then slidably mounting another stirring frame on the peripheral stirring rod, the middle stirring rod and the injector push rod, sleeving an injector rear cover on the injector push rod, screwing the injector rear cover on the injector body, sealing the gap by a sealing ring, mounting the stirring handle at the end part of the injector push rod, screwing a vacuum chamber at the bottom end of the injector body, sealing the gap by the sealing ring on the vacuum chamber, connecting a vacuumizing interface of the vacuum chamber with vacuumizing equipment and vacuumizing, then the stirring handle can be rotated to stir, the vacuumizing device is closed after the stirring is finished, the vacuum chamber is screwed down, the needle head is arranged on the injector joint, and the injector push rod is pushed through the stirring handle to inject. Therefore, the portable bone cement stirring and injecting device has the problem of complex operation in the using process.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an integral type bone cement injection device plays the stirring injection integration with bone cement in order to reduce bone cement glue glutinous loss, the easy and simple to handle's effect.

The above technical purpose of the present invention can be achieved by the following technical solutions: an integrated bone cement injection device comprises an injector shell, an end cover, an injection mechanism and a stirring mechanism, wherein one end of the injector shell is provided with an injection nozzle, and the other end of the injector shell is in an open shape; the injection mechanism comprises an injection piston and an injection handle, wherein one end of the injection piston penetrates through the center of the end cover and is arranged on the end cover in a lifting mode, the injection handle is arranged at one end, far away from the injector shell, of the injection piston, and a through hole penetrating through the injection piston is formed in the center of the injection piston; the stirring mechanism comprises a stirring shaft core penetrating through the through hole, a stirrer arranged at one end of the stirring shaft core, which is positioned in the injector shell, and used for stirring bone cement, and a stirring handle arranged at the other end of the stirring shaft core, wherein the outer wall of the stirring shaft core is matched with the inner wall of the through hole.

By adopting the scheme, the bone cement is firstly placed in the shell of the injector; an end cover connected with an injection mechanism and a stirring mechanism is arranged; then the stirring shaft core is driven to rotate by the stirring handle, and the bone cement in the syringe shell is stirred by the stirrer; finally, after the stirring is finished, the relative position between the injection piston and the end cover is changed through the injection handle, so that the bone cement in the shell of the injector is extruded out, and the injection of the bone cement is realized; therefore, the stirring and injection of the bone cement are integrated to reduce the viscosity loss of the bone cement, and the operation is simple.

The utility model discloses a further set up to: the injection piston is spirally lifted and arranged on the end cover.

Through adopting above-mentioned scheme, injection piston spiral lift sets up on the end cover, and at this moment injection piston relative end cover spiral rotation's in-process, the displacement volume of being convenient for control injection piston to the output of control bone cement follow injection nozzle output that can be stable.

The utility model discloses a further set up to: the periphery of the injection piston is provided with a spiral groove, and the inner ring of the end cover is provided with a spiral part embedded in the spiral groove.

Through adopting above-mentioned scheme, match through the helicitic texture that makes injection piston's helicla flute and end cover inner circle to pressing the in-process that rotates the injection handle so that injection piston extrudees bone cement, injection piston can realize the spiral and rotate the extrusion, so that control injection piston's displacement volume.

The utility model discloses a further set up to: the stirring shaft core comprises an outer pipe penetrating through the through hole, an inner core which is axially telescopic with the outer pipe and is circumferentially fixed, and an adjusting piece which is arranged between the outer pipe and the inner core and is used for adjusting the distance between one end of the outer pipe close to the syringe shell and one end of the inner core close to the syringe shell; the both ends of inner core are located the outer tube, the agitator includes that a plurality of both ends set up the arc iron wire between the one end that the outer tube is close to syringe casing and inner core are close to syringe casing one end, the tip of syringe casing one end is kept away from to the agitator handle setting at the outer tube.

By adopting the scheme, the distance between one end of the outer pipe close to the injector shell and one end of the inner core close to the injector shell can be adjusted through the adjusting piece, so that the plurality of arc-shaped iron wires driving the stirrer are deformed, and the radian of the arc-shaped iron wires is changed; at this moment, the radian of the arc-shaped iron wire is adjusted for many times in the process of stirring the bone cement, so that the stirring uniformity of the bone cement can be improved.

The utility model discloses a further set up to: the week side that the inner core is close to syringe casing one end is provided with the stopper of a plurality of distributions that are the circumference array, the outer tube is seted up a plurality of spacing grooves that supply a plurality of stoppers embedding respectively on being close to the terminal surface of syringe casing, works as when the relative position of outer tube and inner core is adjusted to the regulating part, the stopper keeps the state of embedding in the spacing inslot.

Through adopting above-mentioned scheme, be provided with a plurality of stoppers that are circumference array and distribute the volume in week of inner core, set up the spacing groove of a plurality of stoppers of confession embedding on the outer tube, realize axial extension and circumference between inner core and the outer tube fixed to can drive the agitator rotation on inner core, the inner core when rotating the outer tube through the agitator handle.

The utility model discloses a further set up to: the end, far away from the syringe casing, of the inner core is a threaded end, the end, far away from the syringe casing, of the inner core is provided with a rotating handle, and the adjusting piece is a threaded cover which is in threaded connection with the threaded end and tightly abuts against the stirring handle.

Through adopting above-mentioned scheme, through rotating twist grip, the position of screw thread end and screw thread lid threaded connection changes to the realization is adjusted the outer tube and is close to the one end of syringe casing and the interval that the inner core is close to between the syringe casing one end, thereby realizes adjusting the crooked degree of a plurality of arc iron wires.

The utility model discloses a further set up to: the stirring handle comprises an eccentric plate arranged at one end of the outer tube far away from the injector shell and a holding rod arranged at one end of the eccentric plate far away from the outer tube.

Through adopting above-mentioned scheme, stirring handle includes eccentric plate, holds the pole, is convenient for drive outer tube, inner core and agitator this moment and rotates.

The utility model discloses a further set up to: the end cap is in threaded connection with the syringe housing.

Through adopting above-mentioned scheme, end cover and syringe casing threaded connection to realize dismantling of end cover and syringe casing and be connected, so that the end cover is dismantled and is injected bone cement into the syringe casing.

The utility model discloses a further set up to: two holding rings are arranged on the periphery of one end of the injector shell, which is far away from the injection nozzle.

By adopting the scheme, the two holding rings are arranged on the injector shell, so that the operation of stirring and injection can be realized after the injector shell is held conveniently.

The utility model discloses a further set up to: and a positioning bolt for resetting is arranged between the injection piston and the stirring shaft core.

Through adopting above-mentioned scheme, the location bolt between injection piston, stirring axle core can be used to fix a position when reseing.

To sum up, the utility model discloses following beneficial effect has: firstly, placing bone cement in a syringe shell; an end cover connected with an injection mechanism and a stirring mechanism is arranged; then the stirring shaft core is driven to rotate by the stirring handle, and the bone cement in the syringe shell is stirred by the stirrer; finally, after the stirring is finished, the relative position between the injection piston and the end cover is changed through the injection handle, so that the bone cement in the shell of the injector is extruded out, and the injection of the bone cement is realized; therefore, the stirring and injection of the bone cement are integrated to reduce the viscosity loss of the bone cement, and the operation is simple.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an exploded view of the structure of the present invention;

FIG. 3 is an exploded view of the structure of FIG. 2, again exploded;

FIG. 4 is a schematic structural view of the stirring mechanism;

fig. 5 is an exploded view of a part of the structure of the stirring mechanism.

Reference numerals: 1. a syringe housing; 11. an injection nozzle; 12. a grip ring; 2. an end cap; 21. a spiral portion; 31. an injection piston; 311. a through hole; 312. a helical groove; 32. an injection handle; 41. stirring the shaft core; 411. an outer tube; 4111. a limiting groove; 412. an inner core; 4121. a limiting block; 4122. a threaded end; 4123. rotating the handle; 4124. a connecting seat; 413. an adjustment member; 42. a stirrer; 421. arc iron wires; 43. a stirring handle; 431. an eccentric plate; 432. a holding rod; 5. and (6) positioning the bolt.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to the specific embodiments. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Example (b): an integrated bone cement injection device, as shown in fig. 1 to 3, comprises an injector housing 1 with an injection nozzle 11 at one end and an opening at the other end, an end cap 2 in threaded connection with the opening of the injector housing 1, an injection mechanism, and a stirring mechanism. Two grip rings 12 are integrally provided on the peripheral side of the end of the injector housing 1 remote from the nozzle 11.

As shown in fig. 1 to 3, the injection mechanism includes an injection piston 31 having one end passing through the center of the cap 2 and disposed on the cap 2 in a screw-type lifting manner, and an injection handle 32 integrally disposed at one end of the injection piston 31 away from the injector housing 1. A spiral groove 312 is provided on the circumferential side of the injection piston 31, and the inner ring of the end cap 2 is provided with a spiral part 21 embedded in the spiral groove 312, so that the injection piston 31 is spirally lifted and lowered on the end cap 2. While a through hole 311 penetrating the injection piston 31 is provided at the center of the injection piston 31.

As shown in fig. 3 and 4, the mixing mechanism includes a mixing shaft core 41 passing through the through-hole 311, a mixer 42 provided at one end of the mixing shaft core 41 in the syringe housing 1 for mixing the bone cement, and a mixing handle 43 provided at the other end of the mixing shaft core 41. The outer wall of the stirring shaft core 41 is matched with the inner wall of the through hole 311.

As shown in fig. 3 and 4, the stirring shaft core 41 includes an outer tube 411 passing through the through hole 311, an inner core 412 axially and telescopically fixed with the outer tube 411, and an adjusting member 413 provided between the outer tube 411 and the inner core 412 and used for adjusting a distance between an end of the outer tube 411 close to the syringe housing 1 and an end of the inner core 412 close to the syringe housing 1. Both ends of the inner core 412 are positioned outside the outer tube 411. The end of the plunger 412 adjacent the syringe housing 1 is fitted with a coupling socket 4124. Stirrer 42 includes a plurality of arc-shaped iron wires 421, both ends of which are disposed between one end of outer tube 411 adjacent to syringe housing 1 and coupling holder 4124, and arc-shaped iron wires 421 are bent outward. The mixing handle 43 includes an eccentric plate 431 integrally provided at an end of the outer tube 411 remote from the syringe housing 1, and a grip rod 432 integrally provided at an end of the eccentric plate 431 remote from the outer tube 411.

As shown in fig. 4 and 5, a plurality of circumferentially distributed stoppers 4121 are integrally arranged on the periphery of the core 412 near one end of the syringe housing 1; a plurality of limiting grooves 4111 for respectively embedding a plurality of limiting blocks 4121 are formed on the end surface of the outer tube 411 close to the syringe housing 1. When the adjusting member 413 adjusts the relative position of the outer tube 411 and the inner core 412, the stopper 4121 maintains the state of being inserted in the stopper groove 4111.

As shown in fig. 4 and 5, the end of the core 412 away from the syringe housing 1 is a threaded end 4122, the end of the core 412 away from the syringe housing 1 is integrally provided with a rotary handle 4123, and the adjusting member 413 is a threaded cap that is threaded onto the threaded end 4122 and abuts against the eccentric plate 431 of the stirring handle 43.

As shown in fig. 3 and 5, a positioning pin 5 for resetting is also provided between the injection piston 31 and the stirring shaft core 41. Holes (not marked in the figure) extending along the radial direction are formed among the injection piston 31, the outer pipe 411 of the stirring shaft core 41 and the inner core 412 of the stirring shaft core 41, and the positioning pins 5 are embedded in the corresponding holes among the injection piston 31, the outer pipe 411 and the inner core 412 to realize positioning.

The implementation effect is as follows: firstly, placing bone cement in an injector shell 1; then an end cover 2 connected with an injection mechanism and a stirring mechanism is installed; then the stirring shaft core 41 is driven to rotate by the stirring handle 43, and the bone cement in the injector shell 1 is stirred by the stirrer 42; finally, after the stirring is completed, the injection piston 31 is spirally lifted and lowered relative to the end cap 2 through the injection handle 32 so as to extrude the bone cement in the injector housing 1, thereby realizing the injection of the bone cement. Therefore, the stirring and injection of the bone cement are integrated to reduce the viscosity loss of the bone cement, and the operation is simple.

Meanwhile, in the stirring shaft core 41, the distance between one end of the outer tube 411 close to the injector shell 1 and one end of the inner core 412 close to the injector shell 1 can be adjusted through the adjusting piece 413, so that the plurality of arc-shaped iron wires 421 of the stirrer 42 are driven to deform, and the radian of the arc-shaped iron wires 421 is changed; at this time, the radian of the arc-shaped iron wire 421 is adjusted for many times in the process of stirring the bone cement, so that the stirring uniformity of the bone cement can be improved.

Claims

1. An integral type bone cement injection apparatus which characterized in that: comprises an injector shell (1) with one end provided with an injection nozzle (11) and the other end in an opening shape, an end cover (2) detachably arranged at the opening of the injector shell (1), an injection mechanism and a stirring mechanism;

the injection mechanism comprises an injection piston (31) and an injection handle (32), wherein one end of the injection piston (31) penetrates through the center of the end cover (2) and is arranged on the end cover (2) in a lifting mode, the injection handle (32) is arranged at one end, far away from the injector shell (1), of the injection piston (31), and a through hole (311) penetrating through the injection piston (31) is formed in the center of the injection piston (31);

the stirring mechanism comprises a stirring shaft core (41) penetrating through the through hole (311), a stirrer (42) arranged at one end of the stirring shaft core (41) in the injector shell (1) and used for stirring bone cement, and a stirring handle (43) arranged at the other end of the stirring shaft core (41), wherein the outer wall of the stirring shaft core (41) is matched with the inner wall of the through hole (311).

2. The integrated bone cement injection device according to claim 1, wherein: the injection piston (31) is spirally lifted and arranged on the end cover (2).

3. The integrated bone cement injection device according to claim 2, wherein: a spiral groove (312) is formed in the peripheral side of the injection piston (31), and a spiral portion (21) embedded in the spiral groove (312) is formed in the inner ring of the end cover (2).

4. The integrated bone cement injection device according to claim 1, wherein: the stirring shaft core (41) comprises an outer pipe (411) penetrating through the through hole (311), an inner core (412) axially telescopic with the outer pipe (411) and circumferentially fixed, and an adjusting piece (413) arranged between the outer pipe (411) and the inner core (412) and used for adjusting the distance between one end of the outer pipe (411) close to the syringe shell (1) and one end of the inner core (412) close to the syringe shell (1); the both ends of inner core (412) are located outside outer tube (411), agitator (42) include that a plurality of both ends set up and are close to arc iron wire (421) between one end of syringe casing (1) at outer tube (411) and inner core (412) are close to syringe casing (1) one end, agitator handle (43) set up the tip of keeping away from syringe casing (1) one end at outer tube (411).

5. The integrated bone cement injection device according to claim 4, wherein: the peripheral side of inner core (412) near syringe casing (1) one end is provided with a plurality of stopper (4121) that are the distribution of circumference array, the terminal surface that outer tube (411) is close to syringe casing (1) is seted up a plurality of spacing grooves (4111) that supply a plurality of stopper (4121) to imbed respectively, when adjusting member (413) adjusts the relative position of outer tube (411) and inner core (412), stopper (4121) keep the state of embedding in spacing groove (4111).

6. The integrated bone cement injection device according to claim 4, wherein: the end, far away from the injector shell (1), of the inner core (412) is a threaded end (4122), the end, far away from the injector shell (1), of the inner core (412) is provided with a rotating handle (4123), and the adjusting piece (413) is a threaded cover which is in threaded connection with the threaded end (4122) and is tightly abutted to the stirring handle (43).

7. The integrated bone cement injection device according to claim 4, wherein: the stirring handle (43) comprises an eccentric plate (431) arranged at one end of the outer pipe (411) far away from the injector shell (1) and a holding rod (432) arranged at one end of the eccentric plate (431) far away from the outer pipe (411).

8. The integrated bone cement injection device according to claim 1, wherein: the end cover (2) is in threaded connection with the injector shell (1).

9. The integrated bone cement injection device according to claim 1, wherein: two holding rings (12) are arranged on the peripheral side of one end, far away from the injection nozzle (11), of the injector shell (1).

10. The integrated bone cement injection device according to claim 1, wherein: and a positioning bolt (5) for resetting is arranged between the injection piston (31) and the stirring shaft core (41).