CN211094626U

CN211094626U - Bone cement push type injection device

Info

Publication number: CN211094626U
Application number: CN201921678025.1U
Authority: CN
Inventors: 徐凯
Original assignee: Changzhou Kaiyao Medical Devices Co ltd
Current assignee: Changzhou Kaiyao Medical Devices Co ltd
Priority date: 2019-10-09
Filing date: 2019-10-09
Publication date: 2020-07-28
Anticipated expiration: 2029-10-09

Abstract

The utility model discloses a bone cement propelling injection device, which comprises a device body, the device body comprises a sleeve, a groove is arranged inside the sleeve, a pushing piece for propelling the bone cement is arranged inside the groove, the pushing piece comprises a rotary rod, a through hole is arranged at the position of the groove close to the rotary rod, a lantern ring is arranged on the rotary rod, the rotary rod is rotationally connected with the lantern ring, the lantern ring is connected with the through hole through a nut, a connecting port is arranged at one side of the groove far away from the rotary rod, an injection piece for injecting the bone cement is arranged inside the connecting port, the injection piece comprises an injection pipe for storing the bone cement, the injection pipe is embedded in the connecting, the device is small in size and convenient to hold, avoids the phenomenon that bone cement retracts due to insufficient force, and reduces the operation difficulty of bone cement insertion.

Description

Bone cement push type injection device

Technical Field

The utility model relates to the field of orthopedic medical equipment, in particular to a bone cement push-type injection device.

Background

Bone cement is a common name of bone cement, is a medical material used for orthopedic surgery, and has a popular name due to partial physical properties and appearance and properties after solidification rather like white cement for building and decoration.

The bone cement injection operation is mainly used for treating osteoporosis, vertebral compression fracture is the most common complication of osteoporosis patients, and the percutaneous vertebroplasty PVP and the percutaneous kyphoplasty PKP are novel minimally invasive surgical operations of spine surgery.

The biological bone cement forms two systems in the development process: PMMA bone cement with poor biocompatibility and calcium phosphate bone cement with good biocompatibility.

PMMA bone cement: the traditional acrylic ester bone cement represented by polymethyl methacrylate bone cement is a room-temperature self-setting adhesive consisting of powder and liquid. However, PMMA is a biological inert material, cannot form organic chemical interface combination with host bone tissues, and has limitations in clinical application due to the defects of heat generation in the solidification polymerization process, monomer cytotoxicity, limited operable time and the like.

CPC bone cement: calcium phosphate cements, originally proposed by Brown and Chow in the united states in the 80's 20 th century, CPC was hydrated by a blend of one or more calcium phosphate powders with a liquid phase for formulation, and self-setting under physiological conditions, such as: the hydration reaction is carried out under the conditions of temperature (37 ℃) and humidity (100%) to obtain a solidified product-hydroxyapatite or calcium-permeating apatite which is similar to human bone tissues, thereby having certain degradability and good biocompatibility.

The chinese patent with the publication number CN108420522A at present discloses a bone cement filler, which comprises a bone cement filling pipe, wherein a bone cement channel and an exhaust channel are arranged in the bone cement filling pipe along the axial direction of the bone cement filling pipe, and the bone cement channel and the exhaust channel are isolated from each other; the first end of the bone cement filling pipe is provided with a bone cement filling hole communicated with the bone cement channel and an exhaust hole communicated with the exhaust channel; the second end of the bone cement filling pipe is provided with a bone cement discharge hole communicated with the bone cement channel and the external environment and an air inlet hole communicated with the exhaust channel and the external environment; when the bone cement filling pipe is manufactured, a hollow pipe with at least two through holes is manufactured in a one-time extrusion molding mode, and the end parts of the through holes are plugged to form a bone cement channel or the exhaust channel.

Although the bone cement filler can reduce the perfusion pressure in the injection cavity and reduce the bone cement leakage risk, the device has larger volume, and a doctor cannot hold the whole filler during operation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bone cement impulse type injection device to solve the problem among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme:

The utility model provides a bone cement impulse type injection device, includes the device body, and the device body includes the sleeve pipe, and the intraductal recess that is equipped with of cover, the inside impeller that is used for carrying out propulsive to bone cement that is equipped with of recess, impeller include the rotary rod, and one side that the rotary rod was kept away from to the recess is equipped with the connector, and the connector is inside to be equipped with to be used for carrying out the injection molding that injects into bone cement, and the injection molding is including the injection syringe that is used for depositing bone cement, and the injection syringe.

Through adopting above-mentioned technical scheme, the device's volume is less, can make things convenient for operating personnel to hold when the operation, the impeller can drive bone cement and promote, avoid because the driving force is not enough, lead to the bone cement backward flow, cause danger, the injection member is filled the operation position including being used for driving bone cement, the direction that can the automatic adjustment pour into, make things convenient for operating personnel to use, the rotary rod can drive the impeller and promote, the injection syringe can be used for depositing bone cement, thereby conveniently pour into.

Preferably, the position that the recess is close to the rotary rod is equipped with the through-hole, is equipped with the lantern ring on the rotary rod, and the rotary rod rotates with the lantern ring to be connected, and the lantern ring passes through the nut with the through-hole and is connected.

Through adopting above-mentioned technical scheme, the lantern ring can make the rotary rod fix on the sleeve pipe, can rotate the rotary rod to drive the impeller and promote bone cement.

Preferably, the pushing part comprises a screw rod, the screw rod is connected with the rotary rod through a nut, a piston rod used for pushing bone cement is arranged on the screw rod, a rotating groove is formed in one side, close to the screw rod, of the piston rod, an internal thread is arranged inside the rotating groove, the screw rod is meshed with the internal thread, the piston rod slides inside the injection pipe, a ring buckle used for fixing the piston pipe is arranged at a position, close to the piston rod, inside the groove, the piston pipe is embedded inside the ring buckle, a fixing rod used for fixing the ring buckle is arranged on the ring buckle, a sliding groove is formed in a position, close to the fixing.

By adopting the technical scheme: the rotary rod drives the lead screw to rotate, the lead screw can drive the piston rod to move on the lead screw when rotating, the piston rod can push bone cement in the injection pipe to move, the ring buckle can fix the piston rod, the piston rod is prevented from rotating when the lead screw rotates, the fixed rod can fix the ring buckle in the sleeve pipe, the fixed rod can move according to the movement of the piston rod, the piston rod is fixed through the realization, and the use is convenient for users.

Preferably, the injection member comprises a propelling port for injecting bone cement, a propelling end is arranged inside the propelling port, the propelling end comprises an upper end and a lower end, the upper end is in threaded connection with the propelling port, a shaping hose is arranged between the upper end and the lower end, and the upper end and the lower end are respectively embedded inside the shaping hose.

By adopting the technical scheme: promote the end and can drive bone cement and push the operation position, go up end and end down and can adjust the direction through the design hose to adjust bone cement's filling direction, make things convenient for operating personnel to perform the operation, improve operating personnel's efficiency.

Preferably, a stirrer for stirring the bone cement is arranged on one side, close to the upper end, inside the directional hose, the stirrer is a D2015W stirrer, a screen for screening fixed impurities in the bone cement is arranged on one side, close to the lower end, of the shaping hose, and the screen is connected with the shaping hose through a nut.

By adopting the technical scheme: the agitator can stir bone cement, bone cement is at the in-process of placing, can lead to solidifying because of permanent stewing, the agitator can stir bone cement incessantly, can guarantee on the one hand that bone cement can not solidify, on the other hand can stir bone cement's fixed material, let filling that bone cement can be better, the screen cloth can sieve out impurity and great fixed material in the bone cement, it is inseparable enough to avoid bone cement to solidify when filling, cause certain danger.

Preferably, the rotary rod is provided with an auxiliary joint for driving the rotary rod to rotate, the rotary rod is embedded inside the auxiliary joint, the auxiliary joint is provided with a rotary shaft, the rotary shaft is provided with a holding rod for driving the rotary shaft to rotate, and the holding rod is connected with the rotary shaft through a nut.

By adopting the technical scheme: the auxiliary joint can make the rotating shaft be connected with the rotating rod, the rotating shaft drives the rotating rod to rotate, the holding rod can drive the rotating shaft to rotate, and therefore the rotating rod can be driven to rotate, and bone cement is pushed to be filled.

Preferably, the injection tube is provided with a scale mark for recording bone cement.

By adopting the technical scheme: the scale mark can record the amount that bone cement promoted, can carry out more audio-visual accuse to bone cement to make better promoting bone cement of operating personnel, make things convenient for operating personnel's use.

Preferably, the cannula is provided with a handle at a position near the injection tube for facilitating handling of the cannula.

By adopting the technical scheme: the handle can conveniently hold the sleeve, so that the sleeve is more convenient for an operator to hold.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses adopt operating personnel to rotate the holding rod when the propulsion of bone cement, the holding rod drives and rotates the epaxial attach head of pivot and rotates to the lead screw on the drive rotary rod rotates, thereby drives the piston rod and carries out the back-and-forth movement, thereby releases the inside bone cement of filling in pipe, has avoided because the power is not enough to lead to the phenomenon that bone cement returns and contracts.

The direction of the propelling tip can be adjusted according to the position of inserting the bone cement by an operator, so that the bone cement can be inserted from different directions for operation, and the operation difficulty of inserting the bone cement is reduced.

Drawings

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.

FIG. 1 is a schematic structural view of a bone cement propelling injection device according to the present invention;

FIG. 2 is a cross-sectional view of a bone cement push-type injection device of the present invention;

FIG. 3 is a plan view of a propelling tip of the bone cement propelling type injection device of the present invention;

Fig. 4 is a perspective view of the shaping hose of the bone cement propelling type injection device of the present invention.

In the figure: 1. a sleeve; 2. rotating the rod; 3. an attachment head; 4. a rotating shaft; 5. a holding rod; 6. an injection pipe; 7. a handle; 8. an upper end head; 9. shaping the hose; 10. a lower end head; 11. a collar; 12. a lead screw; 13. a piston rod; 14. looping; 15. fixing the rod; 16. a chute; 17. a stirrer; 18. and (4) screening.

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.

In the embodiment of the utility model, a bone cement impulse type injection device.

The utility model discloses a theory of operation is: as shown in fig. 1, a bone cement propelling type injection device, which comprises a device body, the device body comprises a sleeve 1, the sleeve 1 is rectangular, the sleeve 1 can contain bone cement, a groove is arranged inside the sleeve 1, a propelling piece for propelling the bone cement is arranged inside the groove, the propelling piece comprises a rotary rod 2, the rotary rod 2 is cylindrical, a through hole is arranged at a position of the groove close to the rotary rod 2, a lantern ring 11 is arranged on the rotary rod 2, the rotary rod 2 is rotatably connected with the lantern ring 11, the lantern ring 11 is connected with the through hole through a nut, the lantern ring 11 can enable the rotary rod 2 to be fixed on the sleeve 1 and can rotate the rotary rod 2, thereby driving the propelling piece to propel the bone cement, the lantern ring 11 not only fixes the rotary rod 2 on the sleeve 1, but also enables the rotary rod 2 to rotate, an auxiliary joint 3 for driving, rotary rod 2 inlays to be established attaching inside connecting 3, attach and connect 3 and can make pivot 4 be connected with rotary rod 2, attach and be equipped with pivot 4 on connecting 3, pivot 4 drives rotary rod 2 and rotates, be equipped with in the pivot 4 and be used for driving pivot 4 and carry out pivoted holding rod 5, holding rod 5 passes through the nut with pivot 4 and is connected, holding rod 5 can drive pivot 4 and rotate, thereby can drive rotary rod 2 and rotate, thereby promote bone cement and fill, be equipped with the rubber pad that is used for increasing frictional force on holding rod 5, the rubber pad cladding is on holding rod 5, operating personnel can hold holding rod 5, the rubber pad can increase operating personnel hand and holding rod 5's frictional force.

As shown in fig. 2, a screw 12 for driving bone cement to push and inject is arranged inside the groove, the screw 12 is connected with the rotary rod 2 through a nut, the rotary rod 2 can drive the screw 12 to rotate, a piston rod 13 for pushing bone cement is arranged on the screw 12, a rotary groove is arranged on one side of the piston rod 13 close to the screw 12, an internal thread is arranged inside the rotary groove, the screw 12 is engaged with the internal thread, the screw 12 can drive the piston rod 13 to move on the screw 12 while rotating, the piston rod 13 can push the bone cement inside the injection tube 6 to move, the piston rod 13 can be fixed by a ring buckle 14, the piston rod 13 slides inside the injection tube 6, a ring buckle 14 for fixing the piston tube is arranged inside the groove and close to the piston rod 13, the number of the ring buckles 14 is two, the position of the ring buckle 14 close to the piston rod 13 is arc-shaped, and the ring buckle 14 and the adjacent ring buckle 14 coat both, the piston tube inlays to be established inside latch closure 14, latch closure 14 can be fixed piston rod 13, piston rod 13 rotates when avoiding rotating lead screw 12, be equipped with the dead lever 15 that is used for fixed latch closure 14 on the latch closure 14, the quantity of dead lever 15 is two, dead lever 15 passes through the nut with latch closure 14 and is connected, the position that the recess is close to dead lever 15 is equipped with spout 16, dead lever 15 and spout 16 sliding connection, dead lever 15 can fix latch closure 14 inside sleeve pipe 1, dead lever 15 can remove according to piston rod 13's removal, from realizing fixing piston rod 13, convenience of customers's use.

As shown in fig. 2, a connection port is arranged on one side of the groove far from the rotary rod 2, an injection member for injecting bone cement is arranged inside the connection port, the injection member comprises an injection pipe 6 for storing bone cement, the injection pipe 6 is circular, the injection pipe 6 is used for storing bone cement for an operation, the injection pipe 6 is embedded in the connection port, a piston rod 13 slides inside the injection pipe 6, a piston for pushing the bone cement inside the injection pipe 6 is arranged on one side of the piston rod 13 close to the injection pipe 6, a handle 7 for conveniently holding the casing 1 is arranged at a position of the casing 1 close to the injection pipe 6, a cushion is arranged on the handle 7, the handle 7 can conveniently hold the casing 1, so that the casing 1 is more convenient for an operator to hold, scale marks for recording the bone cement are arranged on the injection pipe 6, the scale marks can record the pushing amount of the bone cement, and can more intuitively control the bone cement, thereby make operating personnel's promotion bone cement better, make things convenient for operating personnel's use.

As shown in fig. 1 and 3, be equipped with on the injection tube 6 and be used for carrying out the propulsion mouth that pours into bone cement into, the inside propulsion end that is equipped with of propulsion mouth, the promotion end can drive bone cement and push into the operation position, it includes upper end 8 and lower end 10 to impel the end, upper end 8 passes through threaded connection with advancing the mouth, be equipped with the design hose 9 that is used for adjusting the direction of pouring into between upper end 8 and the lower end 10, the design hose adopts the steel wire framework hose, upper end 8 and lower end 10 inlay respectively and establish inside design hose 9.

As shown in fig. 4, a stirrer 17 for stirring bone cement is arranged at a side close to the upper end 8 in the directional hose, the stirrer 17 is a stirrer 17D 2015W, blades of the stirrer 17 are inclined backward, so that the bone cement can be stirred, the inclined blades can generate a pushing force moving to the inclined surface to the bone cement, the bone cement can move to the lower part of the directional hose while being stirred, thereby preventing the blade part of the stirrer 17 from being blocked by the bone cement, a connecting rod for fixing the stirrer 17 is arranged in the directional hose, the connecting rod is connected with the inside of the shaping hose 9 through a nut, the connecting rod is connected with the stirrer 17 through a bearing, the stirrer 17 can stir the bone cement, the bone cement can be solidified due to long standing in the placing process, and the stirrer 17 can stir the bone cement constantly, on the one hand, the bone cement can be guaranteed not to solidify, on the other hand, the fixed substances of the bone cement can be stirred, the bone cement can be better filled, the screen 18 can screen out impurities and large fixed substances in the bone cement, and the bone cement is prevented from being solidified insufficiently and causing certain danger when being filled. One side that design hose 9 is close to lower port is equipped with the screen cloth 18 that is arranged in screening bone cement fixed impurity, the material of screen cloth 18 is the stainless steel, screen cloth 18 passes through the nut with design hose 9 and is connected, directional hose inside is equipped with and is used for carrying out the heater strip that heats to design hose 9, the heater strip winding is in the inside of directional hose, bone cement is in the use, probably because the temperature crosses lowly to lead to bone cement solidification speed fast, the effect of heater strip can slow down the solidification of bone cement on the one hand, for the filling of operation prolongs certain time, on the other hand can be when operating personnel carries out the use, more comfortable, the heater strip uses is nichrome, the model is Cr20Ni 80.

The user using method comprises the following steps: firstly, the user places bone cement inside the filling tube 6, slide the inside of filling tube 6 with piston rod 13, then install filling tube 6 inside the connector, slide the piston pipe and fill in inside filling tube 6, set up the piston pipe card inside buckle 14, piston rod 13 can promote the inside bone cement of filling tube 6 and remove, buckle 14 can fix piston rod 13, piston rod 13 rotates when avoiding carrying out the pivoted at lead screw 12, dead lever 15 can fix buckle 14 inside sleeve pipe 1, dead lever 15 can remove according to the removal of piston rod 13, from realizing fixing piston rod 13, convenience of customers's use.

When an operator performs an operation, the lower end head 10 of the propelling end head is adjusted according to the injection direction of the bone cement, and the direction of the shaping hose 9 is adjusted, so that the filling direction of the bone cement is adjusted, the operator can perform the operation conveniently, and the efficiency of the operator is improved.

Secondly, the handle 7 is held by one hand of the operator, the holding rod 5 needs to be rotated by the other hand, a rubber pad and a cushion for increasing friction force are arranged on the handle 7 and the holding rod 5, on the one hand, the rubber pad and the cushion can increase the friction force between the operator and the handle 7 and the holding rod 5, which is convenient for the operator to better hold, on the other hand, the operator can feel comfortable when holding the hand, the holding rod 5 drives the auxiliary joint 3 on the rotating shaft 4 to rotate, the auxiliary joint 3 can connect the rotating shaft 4 with the rotating rod 2, the rotating shaft 4 drives the rotating rod 2 to rotate, the holding rod 5 can drive the rotating shaft 4 to rotate, thereby driving the screw rod 2 to rotate, thereby driving the screw rod 12 on the rotating rod 2 to rotate, thereby driving the piston rod 13 to move forwards, increasing the pressure inside the injection pipe 6, thereby pushing the bone cement inside the injection pipe 6, avoid the user to lead to bone cement backward flow because of using effort not enough in the operation, cause danger, make things convenient for operating personnel to use.

Finally, bone cement gets into and impels the end, and operating personnel observes the scale mark on the injection pipe 6, promotes according to the figure on the scale mark, and the volume that bone cement promoted can be taken notes to the scale mark, can carry out more audio-visual accuse to bone cement to make operating personnel better promote bone cement, make things convenient for operating personnel's use. The pushing end can drive bone cement to be pushed into an operation position, an operator adjusts the direction of the directional hose firstly, the direction of the directional hose is adjusted to the operation position, the bone cement is pushed out from the inside of the injection pipe 6 and enters the directional hose through the upper end 8, the stirrer 17 inside the directional hose stirs the bone cement, blades of the stirrer 17 are backward inclined, on one hand, the bone cement can be stirred, on the other hand, the inclined blades can generate a pushing force to the bone cement to move towards the inclined surface, so that the bone cement can move towards the lower part of the directional hose while being stirred, the situation that the blades of the stirrer 17 are blocked by the bone cement is avoided, the stirrer 17 can stir the bone cement, the bone cement can be solidified due to long standing in the placing process, and the stirrer 17 can stir the bone cement ceaselessly, on the one hand can guarantee that bone cement can not solidify, on the other hand can stir bone cement's fixed material, let filling that bone cement can be better, screen cloth 18 can sieve out impurity and great fixed material in the bone cement, it is inseparable enough to avoid bone cement to solidify when filling, cause certain danger, bone cement is through stirring the back, through thrust, bone cement is through screen cloth 18, screen cloth 18 sieves out the fixed granule that still exists of bone cement, screen cloth 18 passes through the nut with design hose 9 and is connected, after bone cement fills the completion, operating personnel can dismantle screen cloth 18 and wash, conveniently carry out secondary use, make things convenient for operating personnel's use.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a bone cement impulse type injection device, includes the device body, its characterized in that: the device body includes sleeve pipe (1), and sleeve pipe (1) is inside to be equipped with the recess, and the recess is inside to be equipped with and to be used for carrying out propulsive impeller to bone cement, and the impeller includes rotary rod (2), and one side that rotary rod (2) were kept away from to the recess is equipped with the connector, and the connector is inside to be equipped with and to be used for carrying out the injection molding that pours into bone cement into, and the injection molding is including injection pipe (6) that are used for depositing bone cement, and injection pipe (6) are inlayed.

2. A bone cement push-in type injection device as claimed in claim 1, characterized in that the groove is provided with a through hole near the rotating rod (2), the rotating rod (2) is provided with a collar (11), the rotating rod (2) is rotatably connected with the collar (11), and the collar (11) is connected with the through hole through a nut.

3. A bone cement push-type injection device according to claim 1, the pushing piece comprises a lead screw (12), the lead screw (12) is connected with a rotary rod (2) through a nut, a piston rod (13) used for pushing bone cement is arranged on the lead screw (12), a rotary groove is formed in one side, close to the lead screw (12), of the piston rod (13), an internal thread is arranged inside the rotary groove, the lead screw (12) is meshed with the internal thread, the piston rod (13) slides inside the injection pipe (6), a ring buckle (14) used for fixing a piston pipe is arranged at a position, close to the piston rod (13), inside the groove, the piston pipe is embedded inside the ring buckle (14), a fixing rod (15) used for fixing the ring buckle (14) is arranged on the ring buckle (14), a sliding groove (16) is formed in a position, close to the fixing rod (15), and the fixing rod (15) is.

4. The bone cement propelling type injection device according to claim 1, wherein the injection member comprises a propelling port for injecting the bone cement, a propelling end is arranged inside the propelling port, the propelling end comprises an upper end (8) and a lower end (10), the upper end (8) is in threaded connection with the propelling port, a shaping hose (9) is arranged between the upper end (8) and the lower end (10), and the upper end (8) and the lower end (10) are respectively embedded inside the shaping hose (9).

5. A bone cement push type injection device according to claim 4, characterized in that a stirrer (17) for stirring bone cement is arranged at one side of the inside of the sizing hose close to the upper end head (8), the stirrer (17) is D2015W, a screen (18) for screening fixed impurities in the bone cement is arranged at one side of the sizing hose (9) close to the lower end port, and the screen (18) is connected with the sizing hose (9) through a nut.

6. The bone cement propelling type injection device according to claim 1, wherein the rotating rod (2) is provided with an auxiliary joint (3) for driving the rotating rod (2) to rotate, the rotating rod (2) is embedded inside the auxiliary joint (3), the auxiliary joint (3) is provided with a rotating shaft (4), the rotating shaft (4) is provided with a holding rod (5) for driving the rotating shaft (4) to rotate, and the holding rod (5) is connected with the rotating shaft (4) through a nut.

7. Bone cement push-type injection device according to claim 1, characterized in that the injection tube (6) is provided with graduation marks for recording bone cement.

8. Bone cement push-type injection device according to claim 1, characterized in that the cannula (1) near the injection tube (6) is provided with a handle (7) for facilitating handling of the cannula (1).